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Relevant bibliographies by topics / Silicate composite materials

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Academic literature on the topic 'Silicate composite materials'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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Journal articles on the topic "Silicate composite materials"

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Senthil Kumar, B. R., M. Thiagarajan, and K. Chandrasekaran. "Investigation of Mechanical and Wear Properties of LM24/Silicate/Fly Ash Hybrid Composite Using Vortex Technique." Advances in Materials Science and Engineering 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/6728237.

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This work has investigated to find the influence of silicate on the wear behavior of LM 24/4 wt.% fly ash hybrid composite. The investigation reveals the effectiveness of incorporation of silicate in the composite for gaining wear reduction. Silicate particles with fly ash materials were incorporated into aluminum alloy matrix to accomplish reduction in wear resistance and improve the mechanical properties. The LM24/silicate/fly ash hybrid composite was prepared with 4 wt.% fly ash particles with 4, 8, 12, 16, 20, and 24 wt.% of silicate using vortex technique. Tribological properties were evaluated under different load (15, 30, 45, 60, and 75 N); sliding velocity (0.75, 1.5, 2.25, and 3 m/sec) condition using pin on disc apparatus and mechanical properties like density, hardness, impact strength, and tensile strength of composites were investigated. In addition, the machining of the aluminum hybrid composite was studied using Taguchi L9orthogonal array with analysis of variance. The properties of the hybrid composites containing 24 wt.% silicates exhibit the superior wear resistance and mechanical properties.

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Savvova, O. V. "Protective impact resistant composite materials based on aluminium-silicate glass-ceramics." Functional materials 26, no. 1 (March 22, 2019): 182–88. http://dx.doi.org/10.15407/fm26.01.182.

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Jelić, Aleksandra, Milica Sekulić, Milan Travica, Jelena Gržetić, Vukašin Ugrinović, Aleksandar D. Marinković, Aleksandra Božić, Marina Stamenović, and Slaviša Putić. "Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)." Polymers 14, no. 6 (March 21, 2022): 1255. http://dx.doi.org/10.3390/polym14061255.

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In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.

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Yang, Zhijie, De Zhang, Chengyang Fang, Yang Jiao, Dong Kang, Changwang Yan, and Ju Zhang. "Hydration Mechanisms of Alkali-Activated Cementitious Materials with Ternary Solid Waste Composition." Materials 15, no. 10 (May 18, 2022): 3616. http://dx.doi.org/10.3390/ma15103616.

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Considering the recent eco-friendly and efficient utilization of three kinds of solid waste, including calcium silicate slag (CSS), fly ash (FA), and blast-furnace slag (BFS), alkali-activated cementitious composite materials using these three waste products were prepared with varying content of sodium silicate solution. The hydration mechanisms of the cementitious materials were analyzed by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy dispersive spectroscopy. The results show that the composite is a binary cementitious system composed of C(N)-A-S-H and C-S-H. Si and Al minerals in FA and BFS are depolymerized to form the Q0 structure of SiO4 and AlO4. Meanwhile, β-dicalcium silicate in CSS hydrates to form C-S-H and Ca(OH)2. Part of Ca(OH)2 reacts with the Q0 structure of AlO4 and SiO4 to produce lawsonite and wairakite with a low polymerization degree of the Si-O and Al-O bonds. With the participation of Na+, part of Ca(OH)2 reacts with the Q0 structure of AlO4 and the Q3 structure of SiO4, which comes from the sodium silicate solution. When the sodium silicate content is 9.2%, the macro properties of the composites effectively reach saturation. The compressive strength for composites with 9.2% sodium silicate was 23.7 and 35.9 MPa after curing for 7 and 28 days, respectively.

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Kuatbayeva, T. К., Zh Т. Nashiraliyev, Z. М. Zhambakina, М. G. Bruyako, and А. Т. Orynova. "USE OF OIL AND BITUMINOUS ROCKS AND WASTE FROM THEIR PROCESSING IN CREATION OF COMPOSITE SILICATE MATERIALS." SERIES CHEMISTRY AND TECHNOLOGY 2, no. 440 (April 15, 2020): 83–91. http://dx.doi.org/10.32014/2020.2518-1491.27.

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The article considers the issues of technology of silicate materials of dense and cellular structure with usage of oil bituminous rocks and waste from their processing, in particular: the optimization of the ratios of the raw components of a silicate materials mixture, the development of optimal technological parameters for the production of silicate materials, and the technological aspects of the production of the above materials. The optimal compositions of binders with use of waste products from OBR are studied in this work as an activating component of lime or cement. The stability of the samples was studied in various media with a low and high content of basic calcium hydrosilicate. If they contain insoluble silicates and aluminosilicates containing silica, they are acid resistant. Alkali-resistant rocks containing oxides corresponding to strong bases are combined with oxides corresponding to weak acids, for example, calcium and magnesium carbonates. As a result of the experimental work, technological processes for the manufacture of silicate materials (of dense and cellular structure) based on the OBR and waste from their processing are substantiated and developed. The paper reveals the chemical-mineralogical and the structural features of oil bituminous rocks and waste from their processing. The optimal ratio of the waste mixture of oil and bituminous rocks with lime and the technological parameters that ensure the grade of lime-sand binder from 400 to 500 are established. Silicate materials based on this mixture have high physical and mechanical properties and comply with the requirements of the ST standards of the Republic of Kazakhstan for silicate brick and GOST state standard for aerated concrete. Thus, the compositions and conditions for the preparation of these binders with high resistance in large temperature, pressure and aggressive environments are proposed in this work. Key words: oil bituminous rocks and waste from their processing, structure, mechanochemical activation, silicate materials, binder, cellular concrete, durability.

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Petit, P. O., P. Goldner, C. Boissière, C. Sanchez, and B. Viana. "New silicate bonding technique for composite laser materials." Optical Materials 32, no. 10 (August 2010): 1368–71. http://dx.doi.org/10.1016/j.optmat.2010.03.026.

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Hopmann, Christian, Walter Michaeli, and Florian Puch. "Investigation of the processing, the mechanical properties, and the morphology of short glass fiber-reinforced polypropylene-layered silicate composites." Science and Engineering of Composite Materials 19, no. 4 (December 1, 2012): 331–38. http://dx.doi.org/10.1515/secm-2012-0035.

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AbstractPolypropylene composites containing layered silicate and glass fibers are prepared by melt compounding. To investigate the influence of the processing conditions on the mechanical properties and the morphology of short glass fiber-reinforced polypropylene-layered silicate composites, the process parameters are varied while preparing the composites. The processing conditions affect the mechanical properties and the morphology. The investigations suggest that a short glass fiber-reinforced polypropylene-layered silicate composite should be compounded at a maximum barrel temperature of 200°C, a throughput of 30 kg/h at a screw speed of 500 min-1 and a screw configuration, which introduces a large amount of shear energy into the composite. These processing conditions lead to a comparatively high specific mechanical energy input of 206 Wh/kg and to the best set of mechanical properties of the investigated materials. However, the morphology of the investigated short glass fiber-reinforced nanocomposites does not show significant differences and has to be investigated further.

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Ishartono, Bayu, Suyanta Suyanta, and Indriana Kartini. "Effect of Zeolite to Clay Ratios on the Formation of Zeolite-Clay-White Cement Composite Cylinder as an Encapsulant of Urea Fertilizer." Key Engineering Materials 884 (May 2021): 196–203. http://dx.doi.org/10.4028/www.scientific.net/kem.884.196.

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Zeolite-clay-white cement composite cylinders have been prepared for the encapsulant of urea powder. The composites were made by mixing natural zeolite, clay, and white cement at certain ratios using a home-made cylinder mold. All processes were done at room temperature. The composites were characterized using infrared (IR) spectroscopy and X-ray diffraction (XRD). Mechanical properties of the composites were evaluated through compressive strength and water absorption capacity test. The infrared spectra showed functional groups at 3448 and 1636 cm–1, indicating the presence of calcium silicate hydrate as the main product of hydration and pozzolanic reactions in the composite. The XRD patterns also confirmed the presence of calcium silicate hydrate as tobermorite (d = 3.34, 3.22, 2.75, and 2.28 Å) and jennite (d = 4.50 Å). Increasing the natural zeolite ratio in the composite decreased the compressive strength but increased water absorption capacity. The composite cylinders are envisaged as the encapsulant of urea powder and act as a slow-release fertilizer.

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Húšťavová, Jana, Vít Černý, and Rostislav Drochytka. "Influence of Expansion on Properties and Microstructure of Calcium Silicate Composite Material." Key Engineering Materials 808 (June 2019): 136–42. http://dx.doi.org/10.4028/www.scientific.net/kem.808.136.

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The aim of the research was verification of influence of aeration and influence of aluminum powder on microstructure and physical mechanical properties of calcium silicate composite material. At the same time, influence of various dosages of alternative raw materials on porous structure of the composite was examined. Tested raw materials are not the ones commonly used in the technology of manufacture of calcium silicate composites, for example chamotte blocks, Lining of silica and foundry sand. It was found that influence of aeration of calcium silicate composite causes reduction of compressive strength by roughly 85%. At the same time, volume weight drops by 50%. As a consequence of the expansion, intensity of diffraction lines of tobermorite detected by X-ray diffraction analysis is reduced because of reaction of aluminum powder with calcium hydroxide. It was found that there is dependency between the amount of replacement of silica sand with foundry sand and silica, and intensity of tobermorite diffraction lines, where the intensity of the diffraction lines was reduced with increased amount of replacement.

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Zhou, Zifan, Guofu Tu, Feng Xu, Zhaofeng Song, and Na Li. "Preparation and properties of silicate inorganic exterior wall insulation based on thermal energy storage." Thermal Science 24, no. 5 Part B (2020): 3109–18. http://dx.doi.org/10.2298/tsci191104085z.

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The key to building energy conservation is how to make the exterior wall have good thermal insulation performance, reduce the heat loss of the building?s peripheral structure, develop new exterior wall insulation materials, and effectively achieve energy saving. In this paper, a new type of composite silicate insulation material was prepared by using fly ash, sepiolite fiber, basalt fiber, and cement as raw materials. According to the analysis of the action of each component of the composite silicate thermal insulation material, the composite silicate thermal insulation material is prepared by selecting different raw material ratios, and the fly ash and sepiolite fibers are analyzed by a thermal conductivity measuring instrument and a hydraulic universal testing machine. The influence of water-cement ratio on the thermal conductivity, tensile strength, and compressive strength of composite silicate insulation materials. Through research, it is found that this composite silicate exterior wall insulation material utilizes some abandoned resources to help the building exterior wall to store thermal energy. The preparation process is simple, the insulation performance is good, the mechanical strength is high, and there is great promotion value and application prospect.

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Dissertations / Theses on the topic "Silicate composite materials"

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Izadifar, Mohammadreza [Verfasser], and P. [Akademischer Betreuer] Thissen. "Interaction in Calcium Silicate Hydrates and new Composite Materials / Mohammadreza Izadifar ; Betreuer: P. Thissen." Karlsruhe : KIT-Bibliothek, 2021. http://d-nb.info/1234063727/34.

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MATSUI, JEFERSON M. "Estudo de degradação a baixa temperatura de cerâmicas Y-TZP/Al2O3 sintetizadas por coprecipitação." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28024.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-17T17:43:50Z No. of bitstreams: 0
Made available in DSpace on 2017-11-17T17:43:50Z (GMT). No. of bitstreams: 0
A zircônia tetragonal estabilizada por ítria (Y-TZP) têm sido utilizada na área odontológica para próteses livres de metais devido à estética associada ao alto desempenho mecânico. Porém, a presença de ambiente úmido pode causar a transformação acelerada da fase tetragonal para monoclínica e consequente falha catastrófica deste material, processo este conhecido como degradação a baixa temperatura ou envelhecimento. A cinética desta transformação é função da composição química da cerâmica e sua microestrutura. Tendo em vista que métodos químicos permitem a síntese de pós cerâmicos à base de zircônia de dimensões nanométricas, cuja microestrutura da cerâmica sinterizada é constituída por grãos submicrométricos quimicamente homogêneos, e que a presença de alumina é indicada para evitar a degradação de fases da zircônia, o objetivo deste estudo foi verificar a degradação a baixa temperatura e ambiente úmido de cerâmicas de zircônia estabilizada com 3 mol% de ítria (Y-TZP) e do compósito Y-TZP/Al2O3, proveniente de pós sintetizados pela rota de coprecipitação. A concentração de alumina na Y-TZP foi estudada na faixa de 0,05 a 20% em massa. A eficiência do processo desenvolvido foi verificada pela avaliação das características físicas dos pós obtidos (granulometria, área de superfície específica, estado de aglomeração e estrutura cristalina). As amostras cerâmicas foram prensadas, sinterizadas e avaliadas quanto à densidade aparente e microestrutura. Após a caracterização inicial das cerâmicas a degradação das amostras foi estudada in vitro em reator hidrotérmico pressurizado a 150°C. As amostras (n=4) foram submetidas à análise de difração de raios X de acordo com o tempo de envelhecimento, acompanhando a curva cinética de transformação de fase. A porcentagem de cada fase cristalina foi determinada pelo Método de Rietveld. A relação entre o tempo de envelhecimento e a concentração de fase monoclínica foi determinada pela equação de Avrami modificada por Kolmogorow (Johnson-Mehl- Avrami-Kolmogorow JMAK). Após envelhecimento a 150°C por 70 horas, todas as amostras contendo alumina apresentaram menor concentração de fase monoclínica, comparativamente à cerâmica Y-TZP, que apresentou 66,5% dessa fase. Menores porcentagens de fase monoclínica após o envelhecimento hidrotérmico foram obtidas com a adição de 10 e 20% em massa de alumina na matriz de zircônia, sendo esses valores 59,1 e 52,9%, respectivamente. Deve-se considerar, no entanto, que a diminuição da degradação total é consequência da menor porcentagem de zircônia na matriz em função da adição de alumina. Neste contexto, o efeito benéfico da adição de alumina ocorre apenas no início do envelhecimento.
Dissertação (Mestrado em Tecnologia Nuclear)
IPEN/D
Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP

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Işık, Kıvanç Tanoğlu Metin. "Layered silicate/polypropylene nanocomposites/." [s.l.]: [s.n.], 2006. http://library.iyte.edu.tr/tezler/master/makinamuh/T000532.pdf.

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Andrade, Gracielle Ferreira. "Funcionalização de sílica mesoporosa para aplicação em sistemas de liberação controlada de fármacos." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2011. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=145.

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Nenhuma
Materiais mesoporosos ordenados tipo SBA-16 possuem uma rede de canais e poros de tamanho bem definido na escala nanométrica, com estrutura cúbica, elevada área superficial (400 1000 m2.g-1) e tamanho de poros usualmente em torno de 2 a 30 nm. Essa estrutura de poros torna esses materiais apropriados para incorporar e liberar uma grande variedade de moléculas na sua matriz. Dentre os diversos tipos de materiais SBA, o SBA-16 é considerado uma mesoestrutura muito interessante devido ao fato de possuir um ordenamento de mesoporos cúbico tridimensional correspondente ao grupo especial Im3m, podendo ser um material promissor para várias aplicações. Os materiais mesoporosos podem sofrer diversas modificações na sua superfície, devido à presença dos grupos silanóis, podendo produzir um material com uma funcionalidade direcionada. Neste trabalho, estudou-se a síntese e caracterização do material SBA-16 puro e após o processo de funcionalização para avaliar sua aplicação como sistema de liberação controlada de um fármaco modelo. O processo de modificação da superfície foi realizado pelo método pós-síntese, ou seja, após o obter o material SBA-16, esse passou por um segundo processo para se obter as amostras funcionalizadas. A caracterização do SBA-16 puro e funcionalizado foi feita por análise elementar (CHN), Espectroscopia na Região do Infravermelho com Transformada de Fourier (FTIR), Análise Termogravimétrica (TG), Adsorção de Nitrogênio, Microscopia Eletrônica de Varredura (MEV), Microscopia Eletrônica de Transmissão (MET), Espalhamento de Raios X a Baixos Ângulos (SAXS), e Ressonância Magnética Nuclear (RMN). Por meio da técnica de espectroscopia de absorção na região do infravermelho, foi possível observar, a partir dos espectros das amostras funcionalizadas, bandas características das vibrações da rede de sílica, bem como bandas referentes às vibrações dos grupos alquilas ancorados na estrutura da sílica. A presença do fármaco atenolol no material mesoporoso e nas amostras funcionalizadas também pode ser confirmada por meio das medidas de FTIR. A estabilidade térmica e as degradações que ocorrem nos componentes puros, bem como nas amostras modificadas na superfície, foram investigadas e estabelecidas pela análise termogravimétrica. Por meio da TG foi possível quantificar a presença dos grupos orgânicos ancorados nesse material. A presença dos grupos orgânicos conduziu a alterações na estrutura do material final, com a diminuição da área superficial e volume de poros. Porém, a distribuição de poros se mostrou semelhante em todas as amostras. Os resultados de MEV, MET e SAXS do SBA-16 e das amostras funcionalizadas revelaram uma estrutura bem ordenada de mesoporos, característica intrínseca desses materiais. Por meio das medidas de ressonância magnética nuclear de 29Si e 13C de estado sólido (RMN-MAS) nas amostras funcionalizadas, foi possível caracterizar e avaliar a forma de ligação desses grupos orgânicos na matriz de sílica. Através do ensaio de liberação, foi possível avaliar a quantidade de atenolol incorporado e verificar o comportamento da liberação desse nas amostras sintetizadas. Com os resultados de citotoxicidade foi possível determinar a viabilidade celular, obtendo-se resultados satisfatórios para uma futura aplicação clínica desse material.
Type ordered mesoporous materials SBA-16 have a network of channels and well defined pore size in nanometer scale. Cubic structure has a high surface area (400 - 1000m2.g-1) and pore size is usually around 20 to 30 nm. This porous structure makes these materials appropriate to incorporate and release a large variety of molecules in the matrix. Among these SBA-type silica materials, SBA-16 is considered a very interesting mesostructure due to the its 3D cubic arrangement of mesopores corresponding to the Im3m space group, a promising material for a large range of applications. The mesoporous materials may undergo several changes in its surface due to the presence of silanol groups, which can produce a material with a targeted feature. The materials were characterized by elemental analysis (CHN), Fourier Transform Infrared Spectroscopy (FTIR), Nitrogen Adsorption, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Small Angle X Ray Scattering (SAXS), Nuclear Magnetic Resonance (RMN), and Thermal Analysis. Through the FTIR analysis technique, it was possible to observe characteristic bands of the silica vibrations, as well as vibrations bands due the presence of alkyl groups anchored into the silica structure. The presence of the atenolol in the mesoporous material and functionalised samples was also confirmed by FTIR. The thermal stability and the degradation of the surface modified samples were determined by thermogravimetry. The incorporation of the organic groups into the mesoporous silica led to a significant change in the structural properties of the system, with the decrease of the specific surface area and pore volume, but the pore size distribuition was similar in all samples. The results obtained by SEM, TEM and SAXS for the samples reveal a well-defined cubic arrangement of uniform mesoporous structure, intrinsic characteristic of these materials. By measuring nuclear magnetic resonance of 29Si and 13C solid state (MAS-NMR) in the functionalized samples, it was possible to characterize and measure the extent of binding of organic groups in the silica matrix. Through the release assay was possible to evaluate the amount of embedded atenolol and verify the behavior of the drug release from the synthesized samples. Considering the results of cytotoxicity, it was possible to determine cell viability by obtaining satisfactory results for future clinical application of this material.

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Tang, Youhong. "Microrheological study on polyethylene/thermotropic liquid crystalline polymer/layered silicates nanocomposites /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CENG%202007%20TANG.

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Wu, Yuhong 1972. "Silicone resins and their composites." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29976.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2003.
Includes bibliographical references.
Addition cure (X1-2672) and condensation cure (4-3136) silicone resins have been studied for their mechanical property change with temperature. Properties include maximum flexural stress, flexural modulus and fracture toughness K[sub]IC. Temperature effect on mechanical properties of addition cure resin is substantial and also depends on the crosslinkers used. Generally the maximum stress and flexural modulus decrease with temperature, and the dependence upon crosslinkers in addition cure resin is obvious. Fracture toughness data of addition cure silicone resins have a peaking behavior with the peak appearing [approximately] 58-101CÌ (depending on the crosslinker) below their glass transition temperatures. This can be explained by the competing effect between network mobility and rigidity of the silicone polymer. Rate effect on fracture toughness of silylphenylene crosslinked 2672 has also been studied. It is concluded that the temperature effect on such a system is more dominant compared to the rate effect. The condensation resins also experience decrease in modulus and strength but the toughness changes little with temperature. This is due to its tight network structure. Silylphenylene crosslinked addition cure resin (2672B) and the toughened condensation cure resin (3136T) were used to make silicone fiberglass laminates. They have been successfully processed with a vacuum bagging technique. Silicone resin composites are proved to be thermally stable, moisture resistant and fire resistant. However, they have weak strength and modulus. Their temperature dependence of mechanical properties is also big and results in poor property retention at high temperatures. 2672B was used to produce hybrid composites with an organic resin-vinyl ester. The processes of curing the hybrid composites in both sequential cure and co-cure methods prove to be successful. The hybrid composites are stronger and their property retention at elevated temperatures is improved compared to silicone resin composites. They also have improved moisture resistance, thermal stability and fire resistance over vinyl ester composites. The co-cured V/B 8/4 structure has excellent strength and rigidity and also extraordinary property retention at high temperatures, which can be explained by the chemical reaction at the silicone resin and vinyl ester resin interface. The hybrid composites prove to be successful in having balanced mechanical and environmental properties.
by Yuhong Wu.
Ph.D.

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Becker, Lars-Ole 1973. "High performance epoxy-layered silicate nanocomposites." Monash University, School of Physics and Materials Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/5747.

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Yiu, Stephen Cheuk Bun. "Crystallization, structure and mechanical characteristics of polymer-silicate nanocomposites." access abstract and table of contents access full-text, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/dissert.pl?msc-ap-b21175329a.pdf.

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Thesis (M.Sc.)--City University of Hong Kong, 2005.
At head of title: City University of Hong Kong, Department of Physics and Materials Science, Master of Science in materials engineering & nanotechnology dissertation. Title from title screen (viewed on Sept. 4, 2006) Includes bibliographical references.

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Kwok, Yee Shan. "Crystallization, structure and mechanical characteristics of polymer-silicate nanocomposites." access abstract and table of contents access full-text, 2005. http://libweb.cityu.edu.hk/cgi-bin/ezdb/dissert.pl?msc-ap-b21174386a.pdf.

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Thesis (M.Sc.)--City University of Hong Kong, 2005.
At head of title: City University of Hong Kong, Department of Physics and Materials Science, Master of Science in materials engineering & nanotechnology dissertation. Title from title screen (viewed on Sept. 1, 2006) Includes bibliographical references.

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Mariappan, L. "In-Situ Synthesis Of A12O3_ZrO2_SiCw Ceramic Matrix Composites By Carbothermal Reduction Of Natural Silicates." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/215.

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This thesis outlines the work done on in-situ synthesis of Al2O3-ZrO2-SiCw ceramic composites and their property evaluation. The introductory chapter deals with the literature survey on ceramic matrix composites, properties desirable for structural applications and toughening mechanisms associated with these composites. The role of whisker toughening in ceramic matrix composites, the growth mechanisms involved in whisker growth and the conditions that favour or hamper the whisker growth are also discussed. The advantages and disadvantages of in-situ synthesis of composites as compared to physical mixing are also dealt with. The objective and scope of the work undertaken are outlined at the end. The second chapter describes the experimental techniques associated with carbothermal synthesis and characterisation of reaction products as well as properties of hot pressed bulk composites. The equipments used for this work are described here. The third chapter focuses on the results obtained by the carbothermal reduction of mixtures of kaolin, sillimanite and zircon taken in various proportions. The formation of the product phases with respect to variations in temperature, variations in composition and effect of catalyst is analysed with the help of XRD while their morphology is analysed using SEM. The conditions favouring the formation of tetragonal zirconia without the addition of stabilizers is also enumerated here. The fourth chapter deals with the compaction of these composite powders and the evaluation of some physical, thermal and mechanical properties. Density and porosity, coefficient of thermal expansion, modulus of rupture and fracture toughness of the composite specimens are evaluated and compared with binary and ternary composites made by other methods. Finally the thesis concludes by summarizing the work done and briefly projecting the areas for future work.

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Books on the topic "Silicate composite materials"

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Ke, Y. C. Polymer-layered silicate and silica nanocomposites. Boston, Mass: Elsevier, 2005.

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Papailiou, Konstantin O. Silicone Composite Insulators: Materials, Design, Applications. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Toturbiev, B. D. Stroitelʹnye materialy na osnove silikat-natrievykh kompozit͡s︡iĭ. Moskva: Stroĭizdat, 1988.

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1961-, Liang Guozheng, and Lu Haijun, eds. Ju he wu / tian ran gui suan yan nian tu na mi fu he cai liao. Beijing: Ke xue chu ban she, 2009.

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Thermal history effects on electrical relaxation and conductivity for potassium silicate glass with low alkali concentrations. [Washington, DC: National Aeronautics and Space Administration, 1993.

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Papailiou, Konstantin O., and Frank Schmuck. Silicone Composite Insulators: Materials, Design, Applications. Springer, 2012.

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Papailiou, Konstantin O., and Frank Schmuck. Silicone Composite Insulators: Materials, Design, Applications. Springer, 2016.

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Silica and Clay Dispersed Polymer Nanocomposites: Preparation, Properties and Applications. Woodhead Publishing, 2018.

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Pandey, Jitendra K., Kummetha Raghunatha Reddy, Amar Kumar Mohanty, and Manjusri Misra. Handbook of Polymernanocomposites. Processing, Performance and Application : Volume A: Layered Silicates. Springer, 2016.

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Pandey, Jitendra K., Kummetha Raghunatha Reddy, Amar Kumar Mohanty, and Manjusri Misra. Handbook of Polymernanocomposites. Processing, Performance and Application : Volume A: Layered Silicates. Springer, 2014.

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Book chapters on the topic "Silicate composite materials"

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Shim, Jae Hun, Jae Hun Choi, Jung Hiuk Joo, and Jin San Yoon. "Influence of Silicate Surface Modification on Morphology and Mechanical Properties of Nylon6/Clay Nanocomposites." In Advances in Composite Materials and Structures, 877–80. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-427-8.877.

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Xi, Xiao Qing, Jin Long Yang, Xin Yue Zhang, and Xiao Ouyang. "Effect of Micro-Pores after Sintering on Wear Behavior of Zirconium Silicate Composite Microbeads." In Key Engineering Materials, 1439–41. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.1439.

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Rivas Murillo, J., R. Mohan, and A. Mohamed. "Constitutive Material Models for High Strain Rate Behavior of Cementitious Materials from Material Chemistry—Molecular Dynamics Modeling Methodology with Illustrative Application to Hydrated Calcium Silicate Hydrate Jennite." In Blast Mitigation Strategies in Marine Composite and Sandwich Structures, 423–42. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7170-6_22.

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Papailiou, Konstantin, and Frank Schmuck. "Material Selection and Manufacturing Processes for Composite Insulators with Silicone Rubber Housing." In Silicone Composite Insulators, 197–283. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-15320-4_7.

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Shagwira, Harrison, Fredrick Madaraka Mwema, and Thomas Ochuku Mbuya. "Introduction to Composite Materials for Green Construction Industry." In Polymer-Silica Based Composites in Sustainable Construction, 1–14. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003231936-1.

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Black, E. P., T. A. Ulibarri, G. Beaucage, D. W. Schaefer, Roger A. Assink, D. F. Bergstrom, P. A. Giwa-Agbomeirele, and G. T. Burns. "Sol—Gel-Derived Silica—Siloxane Composite Materials." In ACS Symposium Series, 237–46. Washington, DC: American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0585.ch018.

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Zhou, Li Zhong, and De Chang Jia. "Rheological Properties of Boron Nitride-Silica Composite Suspensions." In Key Engineering Materials, 988–90. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.988.

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Grassi, Giulia, Bjorn Sparrman, Ingrid Paoletti, and Skylar Tibbits. "4D Soft Material Systems." In Proceedings of the 2021 DigitalFUTURES, 201–10. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5983-6_19.

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AbstractThis work introduces multi-material liquid printing as an enabling technology for designing programmed shape-shifting silicones. The goal of this research is to provide a readily available, scalable and customized approach at producing responsive 4D printed structures for a wide range of applications. Hence, the methodology allows customization at each step of the procedure by intervening either on the material composition and/or on the design and fabrication strategies for the production of responsive components. A significant endeavour is initiated to develop and engineer two different material systems that enable shape-shifting: silicone-ethanol composites and polyvinyl siloxane swelling rubbers. The printed samples successfully comply with the expected swelling behaviour through a variety of printed test patterns.

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Shagwira, Harrison, Fredrick Madaraka Mwema, and Thomas Ochuku Mbuya. "Processing, Testing, and Failure Modes in Polymer Materials." In Polymer-Silica Based Composites in Sustainable Construction, 15–26. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003231936-2.

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Zhao, Jiu Peng, Deng Teng Ge, Sai Lei Zhang, and Xi Long Wei. "Studies on Thermal Property of Silica Aerogel/Epoxy Composite." In Materials Science Forum, 1581–84. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.1581.

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Conference papers on the topic "Silicate composite materials"

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Wei, Gaosheng, Yusong Liu, Xiaoze Du, and Xinxin Zhang. "Gaseous Conductivity Study on Silica Aerogel and Its Composite Insulation Materials." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22099.

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This paper presented theoretical and experimental study on gaseous conductivity of silica aerogel and it’s composite insulation materials. The samples of silica aerogel, xonotlite-type calcium silicate, xonotlite-aerogel composite and ceramic fibre-aerogel composite insulation materials were prepared firstly. The gaseous conductivities of the prepared samples were measured from 0.045 Pa to atmospheric pressure with the transient hot-strip (THS) method. The gaseous conductivity expressions based on the kinetic theory were then compared with the experimental results. It is shown that both the gaseous conductivity of xonotlite-type calcium silicate and silica aerogel decreases significantly with the drop of pressure. The gaseous conductivity of xonotlite-type calcium silicate reaches to zero at about 100 Pa and the gaseous conductivity of silica aerogel reaches to zero at about 104 Pa. The theoretical gaseous conductivity expressions match well with the experimental results of xonotlite-type calcium silicate and silica aerogel respectively, but do not match with the experimental results for the composite insulation materials. It indicates that the aerogel does not fill the two kinds of composite insulation materials entirely, and some micro level pores still exist in them.

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Húšťavová, Jana, Vít Černý, and Rostislav Drochytka. "Study of the influence of the secondary raw materials on microstructure and properties of calcium silicate composite." In The 13th international scientific conference “Modern Building Materials, Structures and Techniques”. Vilnius Gediminas Technical University, 2019. http://dx.doi.org/10.3846/mbmst.2019.129.

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Calcium silicate composites are a widely used building material, especially autoclaved aerated concrete or sand-lime bricks. The physico-mechanical properties of these materials depend on their microstructure. Microstructure is characterized by the content of crystalline calcium silicate compounds that arise during autoclaving. This is in particular the tobermorite mineral, which carries the mechanical strength of the composite. This paper focuses on the influence of secondary raw materials on properties and microstructure of the calcium silicate composite. Secondary raw materials were selected as slag from the combustion of lignite and ground glass. Mixtures of composites were selected with respect to the required C/S molar ratio of 0.73. The hydrothermal treatment was carried out at a temperature of 190 °C and a residence time of 4, 8 and 16 hours. The microstructure of calcium silicate composites and autoclaved aerated concrete was studied. The use of slag resulted in an increase in the intensity of the diffraction line of tobermorite by X-ray diffraction analysis as well as the use of glass. The difference was particularly evident in the shape of the tobermorite crystals. Long strong crystals were detected in the sample with slag, while the sample with glass exhibited low tobermorite leaves. Porous structure of autoclaved aerated concrete with slag was uniform, unlike samples with glass. Both materials have a positive effect on the increase in compressive strengths of the samples.

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Wei, Gaosheng, Yusong Liu, Xinxin Zhang, and Xiaoze Du. "Thermal Radiation in Silica Aerogel and its Composite Insulation Materials." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62632.

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This paper engages in experimental measurements on thermal radiative transfer in silica aerogel and its composite insulation materials (xonotlite-aerogel composite and ceramic fibre-aerogel composite). The samples of silica aerogel, xonotlite-type calcium silicate, and ceramic fibre insulation materials are all considered as a semi-transparent medium capable of absorbing, emitting and scattering thermal radiation. The spectral transmittances are then measured at different infrared wavelengths ranging from 2.5 to 25μm with a Fourier transform infrared spectrometer (FTIR), and subsequently used to determine the specific spectral extinction coefficient and the specific Rossland mean extinction coefficient of the sample. The radiative conductivities deduced from the overall thermal conductivities measured with the transient hot-strip (THS) method are compared with the predictions from the diffusion approximation by using the measured spectral extinction coefficient. The results show that the spectral extinction coefficients of the samples are strongly dependent on the wavelength, particularly in the short wavelength regime (<10μm). The total Rossland mean extinction coefficients of the samples are all decreasing with the temperature increasing. The radiative conductivities are found almost proportional to the cubic temperature, and decreases as the sample density increases.

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Agourrame, Hind, Amine Belafhaili, Nisrine El Fami, Nacer Khachani, Mohamed Alami Talbi, Ali Boukhari, and Adeljebbar Diouri. "Stabilization of Dicalcium Silicate-Zn Composite Approaching Layered Double Hydroxide Structure for Bioactive Cement Applications." In 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.668.

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Layered Double Hydroxide (LDH) is ionic clay that is characterized by the union of metal cations and OH- hydroxides. LDH composites exhibit considerably high releasing and recharging capacity and have applications as bioactive cements. They can be prepared by direct co-precipitation of metal salts at controlled pH. The preparation is carried out from an acid solution of Zn (NO3)2.6H2O, Al (NO3)3.9H2O and a basic solution of Na2CO3 and NaOH, with a Zn/Al ratio = 3, the pH is stabilized between 9 and 9.5 at a constant temperature of 45°C. The objective of this study is to incorporate Zinc and Aluminum elements at different percentages in dicalcium silicate phase to produce C2S phase incorporating LDH composite. The characterizations of the developed phases by XRD and SEM indicate the formation of stoichiometric LDH phases Zn6Al2(OH)16CO3.4H2O and non-stoichiometric Zn0.61Al0.39 (OH)2(CO3)0.195.xH2O, the incorporation of Zn in the belitic C2S phase and not Al. The obtained micrographs by SEM(EDAX) analysis show new morphology of the stabilized composite.

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Go¨ring, Ju¨rgen, Bernd Kanka, Martin Schmu¨cker, and Hartmut Schneider. "A Potential Oxide/Oxide Ceramic Matrix Composite for Gas Turbine Applications." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38836.

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WHIPOX® (Wound Highly Porous Oxide CMCs) are oxide/oxide composites which are composed of highly porous alumino silicate or alumina matrices and of alumino silicate (Nextel 720, 3M) or alumina (Nextel 610, 3M) fibers. The materials are fabricated by a computer-controlled winding technique, developed at DLR. After eventual forming and joining steps, the green prepegs are pressureless sintered in air at 1300°C. The high temperature behavior of the CMCs is mainly controlled by the thermo-mechanical properties of the oxide fibers. For long-term use (>10,000 h) an application limit for the composite of about 1100°C is expected. It can, however, be improved by external thermal barrier coatings up to a maximum surface temperature of 1300°C. Gas burner tests show that the composites are extremely resistant against thermal fatigue. Therefore it is a material with a high potential for the use under the long-term high temperature conditions of gas turbine engines.

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Wu, Xiaorong, Yizhi Liu, and Weili Xie. "Development and characterization of novel light-curable composite resins with calcium phosphate silicate cement." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Nakhiah C. Goulbourne. SPIE, 2017. http://dx.doi.org/10.1117/12.2263167.

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Ozbulut, Osman E., Zhangfan Jiang, and Guohua Xing. "Evaluation of Various Factors on Electrical Properties of GNP-Reinforced Mortar Composites." In ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8062.

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Graphene nanoplatelets (GNPs) have the same chemical structures as carbon nanotubes but their internal structure consists of multiple layers of graphene with thicknesses of only a few nanometers. Due to their increased thickness, GNPs are less prone to agglomeration and entanglement when they are used as nanofillers in composite materials. Although it has been shown that self-sensing cementitious composites can be fabricated using GNPs, further studies are needed to reveal effect of various factors on the performance of such composites. Here, a fabrication method that mainly employs polycarboxylate-based superplasticizers together with high-speed shear mixing to disperse GNPs in cement composites is used to prepare GNP-reinforced mortar composites. The molecular structure of polycarboxylate-based superplasticizer can considerably affect the performance of GNP-cement composites. Therefore, two commercially available polycarboxylate-based superplasticizers that possess varying backbone and side-chain lengths are systematically incorporated to prepare GNP-reinforced multifunctional composites. In addition, the effects of mixing durations on the electrical properties of the developed composites are assessed. Another essential challenge in the development of multifunctional cement composites is to improve the interfacial interaction between GNPs and the hydration products of cement such as calcium-silicate-hydrates (CSH). Here, incorporation of supplementary materials such as silica fume into the matrix is studied to improve the bond between a cementitious matrix and nano reinforcement. The bulk resistivity of the mortar specimens is measured using the four-probe measurement method. The piezoresistive behavior and sensing ability of the GNP-reinforced mortar composites are investigated through compressive tests at quasi-static.

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Susilo, Macuk, Wijang Wisnu Raharjo, and Kuncoro Diharjo. "Inflammability of GFRP composite with the addition of aluminum tri-hydroxide, boric acid, and sodium silicate." In PROCEEDINGS OF THE 13TH AUN/SEED-NET REGIONAL CONFERENCE ON MATERIALS (RCM 2020) AND THE 1ST INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING AND MANUFACTURING (ICMEM 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0067006.

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Kumar, Aravind S., Bharati Raj J, and Keerthy M. Simon. "Shear Strength of Steel Fiber Reinforced Reactive Powder Concrete & Geopolymer Concrete – A Comparison." In International Web Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.112.43.

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Reactive Powder Concrete (RPC) is an ultra-high strength concrete composite prepared by the replacement of natural aggregates with quartz powder, silica fume and steel fibers. The use of RPC yields high strength, high ductile concrete with optimized material use and contributes to economic, sustainable and ecofriendly constructions. Past research has indicated that RPC offers significant improvement in the mechanical and physical properties owing to its homogenous composition with less defects of voids and microcracks. This leads to enhancement of ultimate load capacity of RPC members and results in superior ductility, energy absorption, tensile strain-hardening behavior, crack control capability and durability. Geo-polymer concrete (GPC) is a type of concrete that is made by reacting aluminate and silicate bearing materials with a caustic activator. Usually, waste materials such as fly ash or slag from iron and metal production are used, which helps lead to a cleaner environment. This paper attempts to review the effect of steel fibers on the shear strength of steel fiber reinforced RPC and compare the results with those of geopolymer concrete.

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Sancaktar, E., and J. Kuznicki. "Stress-Dependent Water Uptake Behavior of Clay Reinforced Nanocomposite Epoxy." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80549.

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Layered silicate nanolayers can be used as alternative inorganic components for the construction of nanostructured hybrid composites. The clay silicate nanolayers possess stable Si-O bonds and high particle aspect ratios comparable to conventional fibers. Their interlayer surface is easily modified by ion-exchange reaction, and the gallery can be intercalated by organic polymer precursors for the formation of organic-inorganic nanocomposites. Exfoliated clay composites contain single, 1 nm thick layers of clay dispersed in the polymer matrix. Owing to the platy morphology of the silicate layers, exfoliated clay nanocomposites can exhibit dramatically improved properties such as barrier and mechanical properties that are not available for conventional composite materials. Since the clay particles scavenge water, the nanocomposite samples initially absorb slightly higher amounts of water in comparison to the no-clay samples, with the water molecules congregating around the clay particles. On the other hand, the presence of these clay particles still hinders diffusion of water through the sample, thus protecting the structural interfaces. In this work, low viscosity liquid aromatic diglycidyl ether of bisphenol A (DGEBA) epoxy resin Epon 815C was mixed with nanoclay at 60°C for 6 hours. The epoxy-clay mixture was then mixed with curing agent DETA (Diethylenetriamine) at 80°C for 4 minutes and cured at 120°C for 3 hours to produce exfoliated clay — epoxy resin system. These samples were used to first optimize the percent clay level for lowest water uptake, and subsequently immersed in water in stressed condition (flexural stress) to assess the effect of stress on nanocomposite epoxy system for its water uptake behavior. The results revealed up to 33% reduction in water uptake for the stressed samples.

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Reports on the topic "Silicate composite materials"

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Lee, Matthew Nicholson, Kyle James Cluff, and Matthew Douglass Crall. Advanced Manufacturing of Porous and Composite Silicone Materials. Office of Scientific and Technical Information (OSTI), May 2020. http://dx.doi.org/10.2172/1635503.

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