Academic literature on the topic 'Nano modified composite'

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Journal articles on the topic "Nano modified composite"

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Li, Zhenxia, Tengteng Guo, Yukun Chen, Qi Liu, and Yuanzhao Chen. "The properties of nano-CaCO3/nano-ZnO/SBR composite-modified asphalt." Nanotechnology Reviews 10, no. 1 (January 1, 2021): 1253–65. http://dx.doi.org/10.1515/ntrev-2021-0082.

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Abstract To solve the problem of the pavement being aged due to the influence of temperature, light and other environmental factors are brought in service. Nano-CaCO3 surface was activated by 6% KH-550, and nano-ZnO surface was activated by 6% aluminate. Nano-CaCO3/nano-ZnO/SBR composite-modified asphalt was prepared. The optimum proportion of composite-modified asphalt was determined by orthogonal test. The influence of modifiers on asphalt pavement performance was comprehensively studied. The microstructure of composite-modified asphalt was characterized by scanning electron microscopy and infrared spectroscopy. The mechanism of composite-modified asphalt was analyzed. The results show that the optimum combination of composite-modified asphalt is 4% nano-CaCO3 + 5% nano-ZnO + 4% SBR, the aging performance of the composite-modified asphalt is reduced by 6.9%, and the viscosity is increased by 14.6–23.1%. The complex shear modulus is increased by 24.1% at 82°C, the stiffness modulus is decreased, on average, by 21.1%. and the creep curve slope is increased by 9% on average. In the meantime, during the preparation process of composite-modified asphalt, it mainly occurred due to chemical reaction with surface-modified nanomaterials and physical change with SBR polymer materials.
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Zheng, Li Yun, Zhi Min Liu, and Ya Jun Zhao. "Preparation and Properties of Nano-Hydroxyapatite Modified Nylon Composites." Advanced Materials Research 87-88 (December 2009): 228–32. http://dx.doi.org/10.4028/www.scientific.net/amr.87-88.228.

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To enhance the mechanical property and the bioactivity of composites, nano-hydroxyapatite (n-HA) modified monomer casting nylon-6 (n-HA/N) composites were prepared by in situ polymerization. During the synthesis of n-HA/N composite, the n-HA and caprolactam were mixed, melt and placed in the field of ultrasonic radiation. The differences between composite with ultrasonic and without ultrasonic were investigated. The tensile strength and the viscosity average molecular weight of the nylon matrix were measured. The results show that the molecular weight of the nylon matrix decreased firstly and it had the lowest value when the content of nano-hydroxyapatite was 1.6 wt.%. After that the molecular weight increased and then it began to decrease when it reached the highest value. But the tensile strength of the n-HA/N composite were improved. The ultrasonic dispersion made the n-HA more evenly dispersed in the nylon and increased the mechanical properties of the n-HA/N composites significantly. The bioactivity and moisture absorption of n-HA/N composites in simulated body fluid (SBF) were examined and compared to pure nylon. What's more, Fourier transform infrared spectrometer was used to characterize the structure of the materials formed on the surface of the composite. The results showed that moisture absorption of the n-HA/N composites was lower than that of the pure nylon. After composites impregnated 16 days in SBF, a layer of carbon hydroxyapatite (CHA) with weak crystalline was formed on the surface of sample. This phenomenon showed that the n-HA/N composites have good bioactivity.
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Nie, Hua Wei, Yuan Kang Zhou, Yang Cao, and Guo Qing Li. "Research of Nanometer TiO2/PF Composites and the Properties of Semi-Metallic Friction Material." Advanced Materials Research 631-632 (January 2013): 239–45. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.239.

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A type of phenolic resin (PF) was prepared by using TiO2 nanoparticles modified with KH-550 as composite filler and modifier, and then the composite modified PF were used as adhesive to prepare semi-metallic friction materials samples. TG analysis of the prepared nano-TiO2 /PF composites was conducted on SETARAM-TG2DSC92216 thermal analyzer that was made in France, and the friction and wear property comparison tests of the samples were carried out on XD-MSM fixed speed friction-wear machine. The results show that the heat resistance of phenolic resin after being compositely modified by TiO2 nanoparticles can be improved, carbon residue rate increases10% at 600°C;the friction coefficient of the corresponding sample slightly increases;the wear rate clearly decreases at high temperature, and wear rate decreases 10% at 350°C.
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Tao, He, Hongming Liu, Xiangbing Xie, Tao Sun, Ruipeng Dong, and Xiaolu Lu. "Preparation and Properties of Nano-ZnO Combined with Biomass Heavy Oil Composite-Modified Asphalt." Advances in Materials Science and Engineering 2022 (December 23, 2022): 1–9. http://dx.doi.org/10.1155/2022/5179787.

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Biomass heavy oil is employed to partially substitute the petroleum-based asphalt due to its renewability, environmentally friendly, and cost-effective advantages. However, its usage weakens the high-temperature performance of petroleum asphalt. Therefore, nano-ZnO was employed as a modifier to make composite-modified asphalt to improve the high-temperature performance in this paper. It was prepared in two steps: first, bio-asphalt was prepared by adding biomass heavy oil based on a certain content of matrix asphalt and then adding nano-ZnO with the particle size of 20 nm. The modification methods of bio-asphalt and composite-modified asphalt were analyzed by Fourier infrared (FTIR) and X-ray diffraction (XRD) experiments. Three major indexes test, dynamic shear rheological test, Brookfield rotational viscosity test (RV), and thermogravimetric analysis (TG-DSC) are used to analyze the high-temperature performance of bio-asphalt and composite-modified asphalt. The results show that biomass heavy oil and nano-ZnO are used to physically and chemically modify asphalt and the modification effect of bio-asphalt is the best when the biomass heavy oil content is about 9%. The high-temperature performance of composite heavy oil-modified asphalt is improved significantly. The performance indexes of Bio-6% and 1% nano-ZnO composite-modified asphalt are better than bio-asphalt. However, the high-temperature performance of Bio-12% and 3% nano-ZnO composite-modified asphalt is the best.
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Wu, Chao, Yanfeng Gao, Xidong Liang, Stanislaw M. Gubanski, Qian Wang, Weining Bao, and Shaohua Li. "Manifestation of Interactions of Nano-Silica in Silicone Rubber Investigated by Low-Frequency Dielectric Spectroscopy and Mechanical Tests." Polymers 11, no. 4 (April 19, 2019): 717. http://dx.doi.org/10.3390/polym11040717.

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Silicone rubber composites filled with nano-silica are currently widely used as high voltage insulating materials in power transmission and substation systems. We present a systematic study on the dielectric and mechanical performance of silicone rubber filled with surface modified and unmodified fumed nano-silica. The results indicate that the different interfaces between the silicone rubber and the two types of nano-silica introduce changes in their dielectric response when electrically stressed by a sinusoidal excitation in the frequency range of 10−4–1 Hz. The responses of pure silicone rubber and the composite filled with modified silica can be characterized by a paralleled combination of Maxwell-Wagner-Sillars interface polarization and DC conduction. In contrast, the silicone rubber composite with the unmodified nano-silica exhibits a quasi-DC (Q-DC) transport process. The mechanical properties of the composites (represented by their stress-strain characteristics) reveal an improvement in the mechanical strength with increasing filler content. Moreover, the strain level of the composite with a modified filler is improved.
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Cheng, Zhi Qiang, Gui Hua Pang, Hong Yan Wang, Jun Feng Li, and Xue Zhong Zhao. "Fabrication and Characterization of Poly L-Lactic Acid/Modified Nano-Hydroxyapatite Composite Fibrous Scaffold." Advanced Materials Research 535-537 (June 2012): 1095–99. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.1095.

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Nano-hydroxyapatite were modified with biocompatible polyethylene glycol (PEG) by surface coating, so modified nano-hydroxyapatite particles (modified nano-HA) were prepared. A homogeneous solution was obtained by dispersing the modified nano-HA into poly l-lactic acid (PLLA) solution. Composite fibrous scaffold was fabricated via electrostatic spinning method with the homogeneous solution. The composite fibrous scaffold was characterized by SEM, TEM and XRD techniques. The characterization results showed that the surface morphology of the composite fibrous scaffold was smooth, modified nano-HA was dispersed in PLLA homogeneously, the hydrophilicity of composite fibrous scaffold were increased obviously. Adipose-derived stem cells (ADSCs) proliferating in the fibrous scaffold were investigated by using laser scanning confocal microscope observation.
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Mahendrarajah, Ghowsalya, Everson Kandare, and Akbar A. Khatibi. "Enhancing the Fracture Toughness Properties by Introducing Anchored Nano-Architectures at the Metal–FRP Composite Interface." Journal of Composites Science 3, no. 1 (February 13, 2019): 17. http://dx.doi.org/10.3390/jcs3010017.

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This paper presents a novel technique for improving aluminium–glass/epoxy composite interfacial bonding through the generation of metallic nano-architectures on the metal surface. Silver nanowires (AgNWs) deposited via solution casting at varying concentrations and annealed at different temperatures in an air atmosphere improved the aluminium-glass/epoxy composite fracture toughness as measured via mode I experiments. For AgNW concentrations of 1 and 3 g/m2 deposited via a single-stage process and annealed at 375 °C, the initiation fracture toughness of the aluminium-glass/epoxy composite improved by 86% and 157%, respectively, relative to the baseline composite without AgNWs. The corresponding steady-state fracture toughness of these nano-modified fibre metal laminates (FMLs) were at least seven times greater than the baseline composite. The FML variant in which AgNWs were deposited at a concentration of 3 g/m2 through a two-stage process followed by annealing at 375 °C and 300 °C, respectively after each deposition, achieved the highest steady-state fracture toughness of all nano-modified composites—a fracture toughness value that was 13 times greater than the baseline composite. Intrinsic and extrinsic toughening mechanisms dictated by the morphology of the silver nano-architectures were found to be responsible for the improved initiation and steady-state fracture toughness in nano-modified FMLs.
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Rong, Zhidan, Mingyu Zhao, and Yali Wang. "Effects of Modified Nano-SiO2 Particles on Properties of High-Performance Cement-Based Composites." Materials 13, no. 3 (February 1, 2020): 646. http://dx.doi.org/10.3390/ma13030646.

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In this research, silane coupling agent was used to modify the surface of nano-SiO2, particles and the effects of modified nano-SiO2 particles on the mechanical properties of high-performance cement-based composites and its mechanism were systematically studied. The results indicated that the optimum modification parameters were a coupling agent content of 10%, reaction temperature of 65 °C, and reaction time of 8 h. Compared with the unmodified nano-SiO2, the modified nano-SiO2 promoted and accelerated the hydration process of cement. The pozzolanic effect, filling effect, and nucleation effect of modified nano-SiO2 made the microstructure of the composite more compact, and thus improved static mechanical properties of cement-based composites.
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Jabbar, Fayq Hsan, and Wisam A. Latif. "A Comparative Analysis of Various Types of Modified Bentonite Clays Added to Poly Methyl Butadiene for Nanocomposite Preparation." NeuroQuantology 19, no. 1 (February 18, 2021): 67–71. http://dx.doi.org/10.14704/nq.2021.19.1.nq21010.

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New Nano-composite of biopolymers was prepared for this analysis. The natural bentonite clay group forms Na- Bentonite (Na- BTT), K- Bentonite (K- BTt), and Ca- Bentonite (Ca-Btt) has been modified by the addition of synthesized fatty amide (FACO), namely Corn oil (CO). To achieve the modification the clay particles was mixed thoroughly in an aqueous (FACO) solution which increases the separation of the clay layer from 1.25 to 2.75 nm of BTT, 1.17 to 1.34 nm of BTt and 1.14 to 1.31nm of Btt due to the action exchange capacity of Na- BTT which is much greater than the low cation exchange capacity of K- BTt and Ca-Btt, respectively. The improved Na- BTT was then used in the preparation of poly methyl butadiene (PMB) Nano-composite. The modifiers interaction in the clay layer is described by X-ray diffraction (XRD). A conventional approach was used to synthesize the Nano-composite, in which the modified clay (FACO- BTT) was melt mixed with PMB. To classify the Nano-composite XRD, Transmission Electron Microscopy (TEM) and Thermogravimetric have been used. The results of XRD and TEM confirmed Nano-composite growth. In contrast to pure PMB, PMB modified BTT Nano-composite showed higher thermal stability. The use of FACO as a vegetable oil derivative to modify clay would minimize reliance on petroleum based surfactants. Moreover, such Nano-composites are considered environmentally friendly in addition to being renewable resources.
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Tang, Xin De, Xiang Li Kong, Fang Huang, and Jun Li. "Performance Evaluation of Nano-Montmorillonite/SBS Modified Asphalt Paving Mixtures." Materials Science Forum 688 (June 2011): 191–94. http://dx.doi.org/10.4028/www.scientific.net/msf.688.191.

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To provide the valuable references for pavement materials applied in various climatic zones, a series of asphalts paving mixtures including common asphalt mixture, SBS modified asphalt mixture and nano-montmorillonite (NMMT)/SBS composite modified asphalt mixture were designed. Marshall tests were carried out to evaluate the effect of different modifiers on the property of these asphalt paving mixtures. Compared with the other two mixtures, NMMT/SBS composite modified asphalt shows fine mechanical performance and moisture susceptibility. These results indicate that NMMT/SBS as a composite modifier can result in excellent properties for asphalt paving mixture.
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Dissertations / Theses on the topic "Nano modified composite"

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Pozegic, Thomas R. "Nano-modified carbon-epoxy composite structures for aerospace applications." Thesis, University of Surrey, 2016. http://epubs.surrey.ac.uk/809603/.

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Carbon fibre reinforced plastics (CFRP) have revolutionised industries that demand high specific strength materials. With current advancements in nanotechnology there exists an opportunity to not only improve the mechanical performance of CFRP, but to also impart other functionalities, such as thermal and electrical conductivity, with the aim of reducing the reliance on metals, making CFRP attractive to many other industries. This thesis provides a comprehensive analysis of the nano-phase modification to CFRP by growing carbon nanotubes (CNTs) on carbon fibre (CF) and performing mechanical, electrical and thermal conductivity tests, with comparisons made against standard CFRP. Typical CFs are coated with a polymer sizing that plays a vital role in the mechanical performance of the composite, but as a consequence of CNT growth, it is removed. Therefore, in addition, an ‘intermediate’ composite was fabricated – based on CFs without a polymer sizing – which enabled a greater understanding of how the mechanical properties and processability of the material responds to the CNT modification. A water-cooled chemical vapour deposition system was employed for CNT growth and infused into a composite structure with an industrially relevant vacuum-assisted resin transfer moulding (VARTM) process. High quality CNTs were grown on the CF, resulting in properties not reported to date, such as strong intra-tow binding, leading to the possibility of a polymer sizing-free CFRP. A diverse set of spectroscopic, microscopic and thermal measurements were carried out to aid understanding for this CNT modification. Subsequent electrical conductivity tests performed in three directions showed 300%, 230% and 450% improvements in the ‘surface’, ‘through-thickness’ and ‘through-volume’ directions, for the CNT modified CFRP, respectively. In addition, thermal conductivity measurements performed in the through-thickness direction also gave improvements in excess of 98%, boding well for multifunctional applications of this hybrid material concept. A range of mechanical tests were performed to monitor the effect of the CNT modification, including: single fibre tensile tests, tow pull-out tests (from the polymer matrix), composite tensile tests, in-plane shear tests and interlaminar toughness tests. Single fibre tensile tests demonstrated a performance reduction of only 9.7% after subjecting the fibre to the low temperature CNT growth process, which is significantly smaller than previous reports. A reduction in tensile performance was observed in the composite tensile test however, with a reduction of 33% reduction in the ultimate tensile strength, but a 146% increase in the Young’s modulus suggests that the CNTs may have improved the interfacial interactions between the fibre and the polymer matrix. To support this, improvements of 20% in the in-plane shear stress and 74% and the shear chord modulus, were recorded. Negligible differences were observed using a pull-out test to directly measure the interfacial strength as a consequence of the inherently difficult mechanical test procedure. The fracture toughness was tested under mode-I loading of a double cantilever beam configuration and improvements of 83% for CNT modified composite alluded to CNT pull-out fracture mechanism and crack propagation amongst the microstructures. The changes in the physical properties are correlated to the microstructure modifications ensured by the low temperature CNT growth on the CF substrates used in the CFRP composites. This allows for a new generation of modified multifunctional CFRPs to be produced.
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Fabbrici, Simone. "Studio delle proprietà meccaniche e smorzanti dei compositi in fibra di carbonio nano-rinforzati." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Nella tesi in esame ci si pone come obiettivo principale quello di indagare il comportamento meccanico e dinamico di un materiale composito nano-rinforzato. Il composito posto in esame risulta essere un materiale innovativo in quanto unisce un prepreg in fibra di carbonio con fibre unidirezionali e membrane di nano-fibre in gomma. Negli ultimi anni si è notata una crescente esigenza nel settore industriale volta a diminuire le vibrazione in sistemi meccanici sottoposti a sollecitazioni periodiche, come ad esempio, mandrini per macchine automatiche o rulli per il settore tissue o covering, tutto questo giustifica la ricerca portata avanti in questa tesi che consiste nello sviluppare un materiale composito innovativo in grado di attenuare le vibrazioni senza d’altra parte aumentarne il peso. Sono da tempo riconosciute le alte capacita smorzanti della gomma, ma spesso l’integrazione nei materiali compositi avviene attraverso l’inserimento di una strato spesso di gomma tra due layer rigidi (struttura a sandwich), questo porta ad un aumento considerevole del peso e dello spessore, caratteristiche che possono rendere un materiale composito meno attraente in alcuni campi di applicazione. Lo smorzamento o damping risulta essere un fenomeno impegnativo da studiare nei materiali metallici perché esso è influenzato da innumerevoli fattori. Per quanto riguarda i materiali compositi la sfida diventa ancora più impegnativa data la loro natura intrinsecamente eterogenea. Concludendo, dalle prove sperimentali, è emerso un incremento notevole delle prestazioni smorzanti dei provini nano-modificati, lasciando inalterate le prestazioni meccaniche.
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Chandrasekaran, Swetha [Verfasser], and Karl [Akademischer Betreuer] Schulte. "Development of nano-particle modified polymer matrices for improved fibre reinforced composites / Swetha Chandrasekaran. Betreuer: Karl Schulte." Hamburg-Harburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2014. http://d-nb.info/1059804107/34.

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Yuan, Xiaojiao. "Nanostructures based on conjugated polymer polypyrrole for application in photocatalysis Photocatalytic degradation of organic pollutant with polypyrrole nanostructures under UV and visible light Polypyrrole nanostructures modified with mono- and bimetallic nanoparticles for photocatalytic H2 generation Highly active composite TiO2-polypyrrole nanostructures for water and air depollution under visible light irradiation Highly Promoted Photocatalytic Hydrogen Generation by Multiple Electron Transfer Pathways Visible light-driven simultaneous water oxidationand quinone reduction by a nano-structuredconjugated polymer without co-catalysts." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF011.

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Récemment, les nanostructures de polymères conjuguées π (CPN) ont émergé comme une nouvelle classe de catalyseurs pour diverses applications photocatalytiques comme le fractionnement de (ou photosplitting) de l’eau, la réduction du CO2, le traitement de l’eau (dégradation des polluants organiques et réduction de métaux lourds). Parmi la famille des polymères conjugués, le polypyrrole (PPy) a été le plus étudié en raison de sa stabilité environnementale, de sa synthèse facile, de son excellente stabilité. Dans cette thèse, les nanostructures PPy ont été synthétisées par différentes méthodes : polymérisation chimique dans des matrices souples (mésophases hexagonales ou lamellaires) et polymérisation par radiolyse. Ces nanostructures PPy présentent une activité photocatalytique prometteuse pour la dégradation de polluants organiques (phénol et méthylorgange) sous lumière visible et leurs activités sont supérieures à celle du PPy-bulk (PPy massif). De plus, nous avons modifié TiO2 avec du PPy nanostructuré pour la photodégradation de polluants organiques.Le nanocomposite montre une augmentation importante des performances photocatalytiques sous UV et lumière visible par rapport au TiO2 et PPy seuls pour le traitement de l’eau et de l’air. La production d'hydrogène vert par fractionnement photocatalytique de l'eau offre un moyen prometteur pour résoudre les problèmes d'environnement et d'énergie. Dans cette thèse, nous avons montré que les nanostructures depolypyrrole modifiées avec des nanoparticules mono et bimétalliques (Pt, Ni, Pt-Ni) sont très actives pour la génération d'hydrogène et qu'un effet de synergie est obtenu en alliant Pt avec Ni. Enfin, différentes nanostructures ternaires à base du composite PPy-TiO2 modifié de manière contrôlée avec des nanoparticules de platine ont été développées ((Pt-PPy) -TiO2, (Pt-TiO2)-PPy et Pt-(PPy-TiO2)). L'activité photocatalytique de Pt-(PPy-TiO2) pour la génération d'hydrogène sous UV et lumière visible est très élevée
Recently, π-conjugated polymer nanostructures (CPNs) emerge as a new class of catalysts for various photocatalytic applications such as water splitting, CO2 reduction, water treatment (degradation of organic pollutants and heavy metals reduction). Among the family of CPs, polypyrrole PPy has been the most extensively investigated owing to its environmental stability, facile synthesis, excellent stability. In this thesis, PPy nanostructures were synthesized by different methods: chemical polymerization by soft templates (hexagonal or lamellar mesophases) and polymerization by radiolysis. These PPy nanostructures exhibit promising photocatalytic activity for organic pollutants (phenol and methyl organge) degradation under visible light and their activities are higher than that of PPy- bulk.Besides, we modified TiO2 with nanostructured PPy for photodegradation of organic pollutants (methy orange and phenol as model water pollutants and toluene as air pollutant). The nanocomposite shows an important increase of the photocatalytic performance under UV and visible light compared to bare TiO2 and PPy. This work offers a facile and cheap way to fabricate the heterojunction in organic-inorganic hybrid materials interface and the composite nanomaterials represents a promising photocatalyst for water treatment and indoor application. In another hand, green hydrogen production by photocatalytic water splitting offers a promising way to solve environment and energy issues. In this thesis, we have shown that modified conjugated polymer polypyrrole nanostructures with mono- and bimetallic (Pt, Ni, Pt-Ni) nanoparticles are very active for hydrogen generation, and that a synergistic effect is obtained by alloying Pt with Ni. Lastly, different ternary nanostructures based on PPy-TiO2 composites with controlled active sites modification with Pt nanoparticles were developed ((Pt-PPy)-TiO2, (Pt-TiO2)-PPy and Pt-(PPy-TiO2)). The photocatalytic activity of Pt-(PPy-TiO2) for hydrogen generation under UV and visible light is very high and drastically surpasses those of (Pt-PPy)-TiO2 and (Pt-TiO2)-PPy
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Lee, Ching-Hui, and 李慶輝. "Study on anti-corrosion of zinc nano-particle modified composite paint." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/92108174434304775579.

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碩士
國立高雄應用科技大學
機械與精密工程研究所
101
With the rapid development of nanotechnologies and nano-materials since 1990s, the studies on polymer-based nano-composites have been extensively focused on their properties' enhancement. A novel anticorrosion/antibacterial material, zinc/epoxy and zinc/hybrid resin nanocomposites, was prepared via simple mix technique. In this study, a nano-composite coating was formed by incorporating nano-Zinc particle in epoxy and hybrid resin, respectively, to different loading levels from 500~3000ppm (0.05~0.3% by weight). Corrosion performance of the nano-composite coating was evaluated by applying these nano-composites coatings on carbon steel substrate and exposing them to 5% sodium chloride salt-spray testing chamber. Adhesion test, scanning electron microscopy (SEM), X-ray fluorescence (XRF), energy-dispersive spectrometer (EDS) were employed to character these coated with nano-composite substrates. The results of SEM and XRF showed that the nano-composites were a hybrid of the polymer and the zinc nano-particles, and the zinc nanoparticles were distributed uniformly in general. The results of salt spray test showed that nano-zinc in epoxy and hybrid resin could react with permeated oxygen, leading to the improvement of anticorrosion properties of the zinc nanocomposites with addition of desirable of zinc nanoparticles. The corroded area of Zn/epoxy samples more than 80% (without Zn nanoparticle) to less than 5%(3,000ppm Zn nanoparticle) after 500 hours salt spray test. The corroded area of Zn/hybrid resin samples more than 95% (369ppm Zn nanoparticle) to less than 10%(1,343ppm Zn nanoparticle) after 1,500 hours salt spray test. Adhesion of these films has passed the standard test method for measurement by tape test from 4B~5B. The bactericidal properties evaluation showed that the bactericidal ability of the Zn/Epoxy, Zn/Hybrid resin nanocomposites with at least 360ppm of nano-zinc and increased with nano-Zn content remarkably. Also we have carefully examined the synthesis of zinc nanoparticle concentration by inductively coupled plasma mass spectrometry (ICP-MS). In conclusion, the corrosion resistant and antibacterial properties are enhanced with addition of pure zinc nanoparticle.
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TSAI, AN-TING, and 蔡安庭. "The Impact Behaviour of Polymer-Based Composite Laminates Modified with Nano-Reinforcement." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3bnmx4.

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碩士
國立高雄應用科技大學
模具工程系
105
Polymer-based composites have been widely used in in mold decoration (IMD) and main structure-related applications due to their outstanding material properties, such as high stiffness and high strength. However, the impact loading resulted in serious damage of the composite laminates, and consequently the structural stiffness, natural frequency and damping property were decreased. In this study, nano-reinforcements of multi-wall carbon nanotube and carbon nanofiber were used to modify the fiber-reinforced polymer composite laminates. The effect of the laminates modified of with nano-reinforcements on the drop-weight impact behaviour was investigated. The drum-winding machine was used to manufacture carbon fiber prepreg in this study. Out of autoclave (OOA) hot-pressure method was used to form the CFRP laminates. The specimens were then cut by using a CNC machine, and were subjected to drop-weight impact loading. The dynamic tests were performed on the damaged laminates in free-free boundary condition, and an impact hammer was used to create a excitation. The non-destructive inspection (NDI) was used to measure the damage area of the laminates after impact tests. According to the experimental results, the addition of nanotube or nanofiber led to an increase in the impact behaviour and a decrease in the damage area. The laminates modified with nanotube have a relatively high value of damping ratio, compared with the laminates modified with nanofiber. The smaller size the nano-reinforcement was used, the higher level of damping performance and impact bheaviour can be obtained.
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Lai, Ying-Hsien, and 賴盈憲. "The influence of modified nano-silica on the properties of composite film." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/43824298691544084328.

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碩士
南台科技大學
化學工程與材枓工程系
95
In this research, organic/inorganic nanocomposite was prepared from acrylic-polyurethane matrix with direct addition of modified silica. Two type of nano-colloidal silica dispersed in difference solvent are grafted with 2-HEMA, the 2-HEMA-g-silica was the polymerized with acrylic monomer forming acrylic polyol. By cross-linked the polyol with polyisocyante, the resultant nanocomposite was used as coating material and has excellent properties in surface hardness, solvent resistance as well as high Tg. However, the surface of coated film tends to loss its gloss with increasing silica content. The second approach to increase interface strength between the two phases was to pre-react the SiO2 particles with polyisocyanate. In this approach, the functional group of -NCO in polyisocyanate was partially reacted with the functional group of -OH on the surface of silica, the reaction was accelerated by the addition of catalyst. A significant improvement in solvent resistance was observed. In addition, the surface of coated film was smooth and glossy.
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Chien, Chia-Yu, and 簡家瑜. "Studies on Modified Epoxy Acrylate Nano-composite Resin for Antibacterial Dental Restorative Materials." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/82098954263268449635.

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碩士
國立臺灣大學
高分子科學與工程學研究所
103
In this research, Epoxy acrylate (EA) was modified with isophorone diisocyanate (IPDI) and 2-Hydroxyethyl methacrylate (HEMA) to synthesize HI-EA, which was used as the resin matrix; whereas nano-aluminum oxide (Nano-Al2O3) and nano-silica (Nano-SiO2 ) was used as the inorganic filler to synthesize dental restorative composite resin. In order to overcome the problem of secondary caries, we have added antibacterial and anticavity elements into composite resin. By using materials that can also be used as inorganic filler: fluoride-releasing kaolinite, Epigallocatechin gallate (EGCG), and Nano-zinc antibacterial agent, we produced a series of antibacterial dental composite resins, and furthermore discussed their mechanical properties and antibacterial ability. In the foliated nano-Al2O3/ fluoride-releasing kaolinite series, as the content of the fluoride-releasing kaolinite increased, the antibacterial ability increased too. Also, under the condition of not influencing the mechanical property of the material, adding EGCG improved the antibacterial ability as well. However, due to the texture of kaolinite being quite soft and with limited inorganic content, the result of mechanical property was under expectation. In order to improve the hardness of the self-synthesized composite resins, we produced another series that contained modified nano-SiO2 mixed along with sphered nano-Al2O3 and fluoride-releasing kaolinite. Due to the content of inorganic filler can reach up to 70 wt%, this series has better hardness performance. Also the material has the same antibacterial trend as the foliated nano-Al2O3/ fluoride-releasing kaolinite series. The last part of the research was to use nano-zinc as the antibacterial element to synthesis composite resin. Due to the higher inorganic filler content, this series has a higher performance in hardness compared to products available in the current market. After adding 1000 ppm of nano-zinc antibacterial agent into the composite resin, the materials would have certain antibacterial ability.
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Mugadza, Farirai. "Photocatalytic degradation of methyl violet using modified radially aligned nano rutile TiO2-nanodiamonds composite." Thesis, 2020. https://hdl.handle.net/10539/31090.

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A dissertation submitted in fulfilment of the requirements for the degree of Master of Science in Chemistry, University of the Witwatersrand, 2020
In this work, a hydrothermal method was used to synthesize the radially aligned nano rutile (RANR) TiO2,usingTiCl4as a precursor. The synthesis temperatures, as well as the time involved in the refluxing step of the synthesis were varied to obtain the optimum morphology of the resulting TiO2. The optimum refluxing time for RANR TiO2 synthesis was determined to be 16 hours at 180°C. The synthesized RANR TiO2 with dandelion-like shapes had diameters ranging from 300 nm to 800 nm and an average diameter of 560 nm. The RANR TiO2 had BET surface area of 68 m2/g, which is higher than that of the commercially available Degussa P25 (45 m2/g).The RANR TiO2-nanodiamond composites were all synthesized in situ using the hydrothermal method with detonation nanodiamonds ranging from 0.1 to 1% mass loading. BET surface area analysis showed an increase in the surface area of the RANR TiO2 with an increase in the amount of nanodiamonds used in its modification. Raman spectra confirmed the presence of graphitic carbon and rutileTiO2in all the composite samples. The results obtained from XPS analysis showed that oxygen, carbon and titanium were all present in the sample but there was no evidence showing bond formation between titanium and carbon. RANR TiO2 was the most effective in dye degradation due to their nano rod structure, which increases light harvesting properties due to multiple reflections of light. All the other composites did generally well with respect to dandelions in the first hour, but then the rate of degradation decreased which could be attributed to the reduction in photocatalytic active sites due to blockage by reactants. A good dispersion of the nanodiamonds and RANR TiO2(0.1% loading) helped to create strong electronic interphase interactions. This helps to separate the photogenerated electrons and positive holes, thereby increasing photocatalytic efficiency. Calcination increased photocatalytic efficiency because of the increase in crystallinity of materials which reduces electron/hole recombination, the increase in crystallinity was shown by results from Raman spectroscopy. The photocatalyst recyclability studies showed that the recovery of the catalyst after each cycle and the re-use was not effective as the degradation efficiency decreased from 80% to 60% after 3 cycles
CK2021
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Ho, Ya-Hui, and 何雅惠. "Preparation, Characterization of Nano Materials with Polymer, Enzyme Composite Film Modified Electrodes and Their Electrocatalytic Applications." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/nfeev2.

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碩士
國立臺北科技大學
化學工程研究所
98
Part I:We developed a novel poly (DDS) doped nano TiO2 composite film on indium tin oxide (ITO) electrode through electropolymerization technique. The electrocatalytic and photoelectrocatalytic studies for NADH oxidation was carried out at the composite film using cyclic voltammetry (CV) and amperometric i-t curve studies. CV results show that irradiation of the composite film surface for 5 min produced an enhanced electrocatalytic oxidation current for NADH which is higher than the electrocatalytic current observed at the composite film without irradiation. The composite film detects NADH in the linear concentration range from 5×10-8 to 1.2×10-7 M. We have characterized the prepared composite film through SEM, AFM and XRD studies. The SEM and AFM results confirm that the composite film has been formed on the ITO surface. XRD results show that the TiO2 NPS are crystalline and belongs to anatase phase. EIS and light induced EIS studies corroborates the electrochemical and photoelectrochemical behavior of different films investigated in this study. Part II:Herein we report a novel amperometric ethanol sensor based on alcohol dehydrogenase immobilized onto poly-L-lysine (PLL) coated carminic acid (CA) functionalized multiwalled carbon nanotubes (MWCNTs). In the present study, we prepared a stable dispersion of MWCNTs using CA, anthraquinone dye as a dispersing agent. The prepared CA functionalized MWCNTs (CACNT) are extremely stable for several months without any precipitation. We have characterized the prepared CACNT and the different films through scanning electron microscopy (SEM), atomic force microscopy (AFM), UV–vis absorption spectroscopy and electrochemical impedance spectroscopy (EIS) studies. SEM and AFM results confirm that MWCNTs form a uniform stable suspension in CA aqueous solution. Both CACNT and the composite film containing CACNT exhibit characteristic UV–vis absorption absorption peak at 280 nm for CA which reveals that MWCNTs are functionalized with CA. The prepared stable CACNT dispersion was coated with poly-L-Lysine film on a glassy carbon electrode (GCE) and used for the immobilization of ADH through the electrostatic interactions between the negatively charged ADH (isoelectric point of ADH pI~6.8) and positively charged PLL film. The prepared ADH/PLL/CACNT composite film exhibits excellent electrocatalytic reponse towards 2.5 x 10-2 to 3.01 M ethanol. The proposed ADH/PLL/CACNT composite film was also successfully employed for the determination of ethanol from commercially available wine samples which shows the good practical applicability of this method Part III:We report a novel amperometric H2O2 sensor based on catalase (CAT) immobilized at carminic acid functionalized multiwalled carbon nanotubes (CACNT) modified glassy carbon electrode. We successfully prepared a stable dispersion of MWCNTs in carminic acid aqueous solution which was extremely stable even after one month storage at room temperature. The prepared CACNT suspension was characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM) studies. The SEM and AFM results reveal that the prepared CACNT is well dispersed in CA aqueous solution. Further, SEM and AFM images of CANT/CAT composite film shows that CAT has been well immobilized at CACNT. UV–vis absorption spectroscopy results corroborate that the immobilized CAT retains its native structure and remains highly stable at CACNT matrix. Amperometric i-t curve results show that the composite film exhibits excellent electrocatalytic response to H2O2 in the linear concentration range from 1×10-5 M to 5.77×10-3 M. Furthermore, the composite film is highly selective towards H2O2 even in the presence of 0.1 mM of ascorbic acid, dopamine and uric acid. The composite film also successfully detects H2O2 from commercially available wash stain remover solution which shows its good practical applicability.
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Book chapters on the topic "Nano modified composite"

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Abliz, Dilmurat, and Gerhard Ziegmann. "Permeability Characterization and Impregnation Strategies with Nanoparticle-Modified Resin Systems." In Acting Principles of Nano-Scaled Matrix Additives for Composite Structures, 351–64. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68523-2_15.

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Khomenko, Anton, Ermias G. Koricho, and Mahmoodul Haq. "Curing Induced Shrinkage: Measurement and Effect of Micro-/Nano-Modified Resins on Tensile Strengths." In Composite, Hybrid, and Multifunctional Materials, Volume 4, 157–63. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06992-0_20.

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Jin, Wen Jie, Taek Rae Kim, Seung Hwan Moon, Yun Soo Lim, and Myung Soo Kim. "Graphite/Carbon Nanofiber Composite Anode Modified with Nano Size Metal Particles for Lithium Ion Battery." In Materials Science Forum, 1078–81. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-995-4.1078.

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Irez, A. B., and E. Bayraktar. "Design of a Low-Cost Aircraft Structural Material Based on Epoxy: Recycled Rubber Composites Modified with Multifunctional Nano Particles." In Mechanics of Composite and Multi-functional Materials, Volume 5, 73–80. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30028-9_11.

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Arowojolu, Olaniyi, Ahmed Ibrahim, and Mahmoud Reda Taha. "Parametric Study on the Performance of UHPC and Nano-modified Polymer Concrete (NMPC) Composite Wall Panels for Protective Structures." In International Congress on Polymers in Concrete (ICPIC 2018), 683–88. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78175-4_87.

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Deng, Shi Qiang, P. Rosso, Lin Ye, and Klaus Friedrich. "Interlaminar Fracture of CF/EP Composites Modified with Nano-Silica." In Solid State Phenomena, 1403–6. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-30-2.1403.

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Ajeesh, G., P. Sanjana, M. Raji Sivani, S. Govardhan, A. Sudhin, and Philip Goerge. "Development of Fire Resistant Polymeric Nano Composites Using Plasma Modified Calcium Silicate." In Advanced Manufacturing and Materials Science, 449–56. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76276-0_46.

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Sankaralingam, Pugalanthipandian, Poornimadevi Sakthivel, and Vijayakumar Chinnaswamy Thangavel. "Novel Composites for Bone Tissue Engineering." In Biomimetics - Bridging the Gap [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.106255.

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Novel metal oxide-doped fluorophosphates nano-glass powders were synthesized by melt quenching method, and their non-toxicity is proved by MTT. Their efficacy in bone formation is confirmed by osteocalcin and ALP secretion. Composites were made using PLA, PDLLA, PPF, or 1,2-diol with fluorophosphates nano-glass powders (AgFp/MgFp/ZnFp). Their non-toxicity was assessed by cell adhesion and MTT. The ability of the composite for bioconversion was assessed by RT-PCR estimation for osteocalcin, Collagen II, RUNX2, Chondroitin sulfate, and ALP secretion accessed by ELISA method. The animal study in rabbit showed good callus formation by bioconduction and bioinduction. The bioconversion of the composite itself was proved by modified Tetrachrome staining. From the 12 different composites with different composition, the composite PPF+PDLLA+PPF+ZnFp showed the best results. These obtained results of the composites made from common biological molecules are better than the standards and so they do biomimic as bone substitutes. The composites can be made as strips or granules or cylinders and will be a boon to the operating surgeon. The composite meets nearly all the requirements for bone tissue engineering and nullifies the defect in the existing ceramic composites.
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Kapustin, Dmitry, Anna Prostyakova, Yana Bryk, Elena Yagudaeva, and Vitaly Zubov. "New Composite Materials Modified with Nano-Layers of Functionalized Polymers for Bioanalysis and Medical Diagnostics." In Nanocomposites and Polymers with Analytical Methods. InTech, 2011. http://dx.doi.org/10.5772/18081.

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Lakhane, Madhuri, and Megha Mahabole. "Biocompatible Composites and Applications." In Bio-Inspired Nanotechnology, 16–40. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815080179123010004.

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In this chapter, the low-cost, biodegradable absorbents are developed for wastewater treatment. At first, the modification of the procured nano ZSM-5 is executed by means of dealumination and ion exchange process to have de-laminated (D-ZSM-5), Cu-ZSM-5 and Fe-ZSM-5. Furthermore, cellulose nanofibrils (CNFs) are mixed with modified zeolites with varying concentrations (20 and 80 wt%) used for the fabrication of innovative composite films ((D-ZSM-5, Cu-ZSM-5 and Fe-ZSM-5). FTIR, XRD, BETCO2, TGA, and SEM type of characterization techniques are used for the analysis of composites. The prepared composite films are exploited for cationic Rhodamine B (Rh6B) and anionic Reactive Blue 4 (RB4) dye elimination by the activity of adsorption. The effect of contact time, initial dye concentration and pH on the dyes’ adsorption in aqueous buffer solutions is examined. The equilibrium adsorption data are estimated using Langmuir, Freundlich, and Temkin isotherm models. Langmuir isotherm is deemed to be the best-fitting model and the process (kinetics and mechanism) follows pseudo-second-order kinetics, yielding an uppermost adsorption capacity of 34 mg/g, and 16.55 mg/g which is comparable to plane CNF (8.7mg/g) and (0.243mg/g) for cationic Rh6B dye and anionic RB4 dye respectively. Maximum dye removal is observed for a higher amount of (80% ZSM-5) film. The study reveals that ZSM-5/ CNFs films can potentially be used for the removal of cationic and anionic dyes.
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Conference papers on the topic "Nano modified composite"

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Dang, Vivian T., Russ Maguire, and Robab Safa-Bakhsh. "An Approach to Enhancement of Conductivity in Composite Material Using Nanotechnology." In CANEUS 2006: MNT for Aerospace Applications. ASMEDC, 2006. http://dx.doi.org/10.1115/caneus2006-11060.

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This review documents possible developments using Nano technology to enhance electromagnetic effects (EME) and identifies the potential integration on the composite structures for the next generation composite commercial aircraft. First, developments using Nano technology as a source to enhance the EME of the composite will be discussed. These developments include computational modeling of Nano-filled composites to predict certain properties and behaviors of Nano-enhanced materials, test methods for non-destructive examination of Nano-modified materials, and other novel approaches to resolve the challenges of increasing conductivity in composite materials. Next, the details of the potential impacts of using Nano technology for increasing conductivity will be outlined. Finally, the implementation of a Nano-enhanced material on the composite structure will be described.
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Ahuja, Suresh K. "Visco-Elastic Modulus and Intercalation of Polymer Chains in Epoxy Nano-Composites." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42503.

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Polymer nano-composites (PNC) are polymers which are reinforced with less than 5% by volume of nano-sized particles with high aspect ratios (L/h > 300). Compared to conventional composites, where the reinforcement is on the order of microns, the nano-composites are reinforced on the order of a few nanometers with advantages in processing and toughness. Nano-composites of epoxy clay have been studied where epoxy is mixed at high shear rates with clay. In our method of making nano-composites, an epoxy, Diglycidyl ether of bisphenol (DGEBA) A was mixed under high shear with organically modified mica type silicate (OMTS) either of benzyl dimethyl stearyl ammonium (BDSMA) or of methyl bishydroxyethyl stearyl ammonium chloride ion exchange with sodium montmorillonite. Nano-composites of epoxy cured with hexahydrophthalic anhydride (70%) with polyether polyol (25%) were made also under high shear both at 90C and 120C. Heat of reaction and transition temperature of epoxy nano-composite was compared with cured epoxy nano-composite. Analysis by X-Ray Diffraction was used to determine peaks, spacing and interfacial region. Dynamic visco-elastic measurements were used to distinguish between the nano-composites from two organically modified mica type silicates. Effect of increase in concentration and temperature on visco-elastic modulus of nano-composites was analyzed in terms of intercalation of polymer chains.
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John, Mathew, Raghu V. Prakash, and Raman Velmurugan. "The Inter-Laminar Fracture and Mechanical Behavior of Nano-Alumina Modified Glass Fiber/ Epoxy Composite." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-87791.

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This paper presents the effect of addition of nano-alumina particles on the fracture properties of glass fiber reinforced plastic (GFRP) composite laminates. Epoxy resin is the most commonly used polymer matrix for advanced composite materials in view of its ability to adhere to a wide variety of fillers; on curing, they provide excellent stiffness and dimensional stability. However the highly cross linked epoxy often behaves undesirably brittle, because, plastic deformation is constrained, leading to poor resistance to crack initiation and propagation. Hence it is necessary to improve the toughness without sacrificing the other important mechanical and thermal properties. In this work, glass-fiber-reinforced composite with nano-alumina modified epoxy matrix was successfully produced with a hand lay-up process and characterized by EDAX and XRD technique for its composition. The experimental results show that the composites exhibited improvements in inter-laminar toughness values (GIC and GIIC) along with improvements in other mechanical properties, especially in toughness related properties. The Mode-I interlaminar fracture toughness for 2 phr (per hundred gram resin) nano-alumina was 2.5 times higher than that of unfilled epoxy and the Mode-II inter-laminar fracture toughness improved by 37%. The significant increase in Mode-I fracture toughness and improvement in Mode II inter-laminar fracture toughness resulting from the nano-particle modification, indicates a pronounced increase in matrix toughness. Impact tests suggest that the energy absorption capability of the GFRP considerably improved with the addition of equi-axed nano-alumina particles with epoxy resin. The laminate and fracture surface morphology analysis was done to understand the fracture and toughening mechanisms behind these property changes. The bending characteristic such as ILSS and Flexural properties recorded the maximum improvements of 14% and 17% respectively for the laminate with nano-alumina modified epoxy. A significant improvement in flexural modulus of over 37% was noticed with respect to unmodified epoxy. The experimental results show that the tensile modulus exhibited 15% improvement compared to laminate without nano-alumina, while, a modest change was observed in the tensile strength.
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Koricho, Ermias G., Oleksii Karpenko, Anton Khomenko, Mahmoodul Haq, Gary L. Cloud, and Lalita Udpa. "Evaluation of progressive damage of nano-modified composite laminates under repeated impacts." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Nakhiah C. Goulbourne. SPIE, 2016. http://dx.doi.org/10.1117/12.2219410.

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Gao, Xuekai, Chunyu Liang, Weidong Jin, Liuxin Wang, and Xin Xu. "Preparation and Properties of Composite Nano TiO 2 /CaCO 3 Modified Asphalt." In 20th COTA International Conference of Transportation Professionals. Reston, VA: American Society of Civil Engineers, 2020. http://dx.doi.org/10.1061/9780784483053.144.

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Hui, Yun, Chao Bian, Jianhua Tong, and Shanhong Xia. "Novel PEDOT-ionic liquid composite films modified Au microelectrodes for nitrite oxidation." In 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS). IEEE, 2017. http://dx.doi.org/10.1109/nems.2017.8017101.

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Shih, Ching-Jui, Wei-Chih Lin, Chao-Sung Lin, and Yung-Ning Pan. "Surface-modified diamond embedded in nickel matrix composite for intrinsic polishing application." In 2012 7th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS). IEEE, 2012. http://dx.doi.org/10.1109/nems.2012.6196867.

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Ghazizadeh, Mahdi, Joseph E. Estevez, Evan T. Kimbro, and Ajit D. Kelkar. "Effect of Boron Nitride Nanoparticles on the Mechanical Properties of Carbon Fiber Reinforced Polymeric Composites." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38342.

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The mechanical properties of three phase nano-modified carbon fiber reinforced polymeric composites (CFRP) fabricated using Heated Vacuum Assisted Resin Transfer Molding (HVARTM) is investigated. Eight layers of carbon fiber plain weave mats were stacked in quasi isotropic layup and Epoxy 862 resin (non–modified and modified with Boron Nitride Nanoparticles (BNNPs)) was used. For mechanical properties characterization, three ASTM tests were performed. These tests included Tension Test (ASTM D3039), Compression Test (ASTM D6641) and Flexural Bending Test (ASTM D7264). The behavior of control and nano-modified composite laminates were compared. Results indicated that even small percentage of Boron Nitride Nanoparticle can significantly affect mechanical behavior of CFRP as well as progressive failure mechanisms.
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Sun, Yuqiong, and Peng Yan. "Modified ADRC with composite nonlinear feedback for a piezoelectric-actuator driven nano-manipulating stage." In 2016 35th Chinese Control Conference (CCC). IEEE, 2016. http://dx.doi.org/10.1109/chicc.2016.7554288.

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Smyrek, P., Y. Zheng, H. J. Seifert, W. Pfleging, P. Smyrek, and W. Pfleging. "Laser-induced breakdown spectroscopy as a powerful tool for characterization of laser modified composite materials." In 2016 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO). IEEE, 2016. http://dx.doi.org/10.1109/3m-nano.2016.7824954.

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Reports on the topic "Nano modified composite"

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Ruth, Patrick, Brent Viers, Rusty Blanski, and Andre Lee. Effects on Processing by Drop-In Modifiers in Nano-Composite Polymers. Fort Belvoir, VA: Defense Technical Information Center, September 2002. http://dx.doi.org/10.21236/ada406880.

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Ruth, Patrick, Brent Viers, Rusty Blanski, and Andre Lee. Effects on Processing by Drop-In Modifiers in Nano-Composite Polymers. Fort Belvoir, VA: Defense Technical Information Center, February 2002. http://dx.doi.org/10.21236/ada410033.

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Kessler, Michael R., and Prashanth Badrinarayanan. Cyanate Ester Resin Modified with Nano-particles for Inclusion in Continuous Fiber Reinforced Composites. Fort Belvoir, VA: Defense Technical Information Center, February 2011. http://dx.doi.org/10.21236/ada562120.

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Huang, Cihang, Yen-Fang Su, and Na Lu. Self-Healing Cementitious Composites (SHCC) with Ultrahigh Ductility for Pavement and Bridge Construction. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317403.

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Cracks and their formations in concrete structures have been a common and long-lived problem, mainly due to the intrinsic brittleness of the concrete. Concrete structures, such as rigid pavement and bridge decks, are prone to deformations and deteriorations caused by shrinkage, temperature fluctuation, and traffic load, which can affect their service life. Rehabilitation of concrete structures is expensive and challenging—not only from maintenance viewpoints but also because they cannot be used for services during maintenance. It is critical to significantly improve the ductility of concrete to overcome such issues and to enable better infrastructure quality. To this end, the self-healing cementitious composites (SHCC) investigated in this work could be a promising solution to the aforementioned problems. In this project, the team has designed a series of cementitious composites to investigate their mechanical performances and self-healing abilities. Firstly, various types of fibers were investigated for improving ductility of the designed SHCC. To enhance the self-healing of SHCC, we proposed and examined that the combination of the internal curing method with SHCC mixture design can further improve self-healing performance. Three types of internal curing agents were used on the SHCC mixture design, and their self-healing efficiency was evaluated by multiple destructive and non-destructive tests. Results indicated a significant improvement in the self-healing capacity with the incorporation of internal curing agents such as zeolite and lightweight aggregate. To control the fiber distribution and workability of the SHCC, the mix design was further adjusted by controlling rheology using different types of viscosity modifiers. The team also explored the feasibility of the incorporation of colloidal nano-silica into the mix design of SHCC. Results suggest that optimum amounts of nano-silica have positive influence on self-healing efficiency and mechanical properties of the SHCC. Better hydration was also achieved by adding the nano-silica. The bonding strength of the SHCC with conventional concrete was also improved. At last, a standardized mixing procedure for the large scale SHCC was drafted and proposed.
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