Relevant bibliographies by topics / Cationic epoxy

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Cationic epoxy'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Cationic epoxy"

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Bednarczyk, Paulina, Karolina Mozelewska, Małgorzata Nowak, and Zbigniew Czech. "Photocurable Epoxy Acrylate Coatings Preparation by Dual Cationic and Radical Photocrosslinking." Materials 14, no. 15 (July 26, 2021): 4150. http://dx.doi.org/10.3390/ma14154150.

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In this work, epoxy acrylate resin (EA) based on the industrial-grade bisphenol A-based epoxy resin (Ep6) and acrylic acid (AA) has been synthesized in order to develop hybrid resin comprising both epoxide group and reactive, terminal unsaturation. Obtained epoxy acrylate prepolymer was employed to formulate photocurable coating compositions containing, besides the EA binder, also cationic or radical photoinitiators. Hence, when cationic photoinitiators were applied, polyether-type polymer chains with pending acrylate groups were formed. In the case of free radical polymerization, epoxy acrylates certainly formed a polyacrylate backbone with pending epoxy groups. Owing to the presence of both epoxy and double carbon–carbon pendant groups, the reaction product exhibits photocrosslinking via two distinct mechanisms: (i) cationic ring-opening polymerization and (ii) free radical polymerization. Therefore, photopolymerization behavior of synthetized hybrid resin with various photoinitiators was determined via photo-differential scanning calorimetry (photo-DSC) and real-time infrared spectroscopy (RT-IR) methods, and properties of cured coatings were investigated. The performance of the following type of photoinitiators was tested in the cationic photopolymerization: diaryliodonium cations or triarylsulfonium cations, and the following type of photoinitiators were used to induce free radical photopolymerization: α-hydroxyketones, acylphosphine oxides, and their mixtures. Lastly, the basic physicomechanical properties of cured coatings, such as tack-free time, hardness, adhesion, gloss, and yellowness index, were evaluated. Some structural factors and parameters of cationic and radical photoinitiators and photopolymerization mechanisms affecting the epoxy acrylate hybrid coatings performance are discussed.
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Walker, Frederick H., John B. Dickenson, Charles R. Hegedus, and Frank R. Pepe. "Cationic polymerization of emulsified epoxy resins." Progress in Organic Coatings 45, no. 2-3 (October 2002): 291–303. http://dx.doi.org/10.1016/s0300-9440(02)00107-8.

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Scognamillo, Sergio, Chris Bounds, Michael Luger, Alberto Mariani, and John A. Pojman. "Frontal cationic curing of epoxy resins." Journal of Polymer Science Part A: Polymer Chemistry 48, no. 9 (May 1, 2010): 2000–2005. http://dx.doi.org/10.1002/pola.23967.

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Angelopoulos, Anastasios P., Jay B. Benziger, and Sheldon P. Wesson. "Cationic Polyacrylamide Adsorption on Epoxy Surfaces." Journal of Colloid and Interface Science 185, no. 1 (January 1997): 147–56. http://dx.doi.org/10.1006/jcis.1996.4573.

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Zhang, Li Juan, Chen Bo Wu, Fei Yang, Xiao Yi Geng, Meng Qian Li, and Ji Jun Xiao. "Preparation and Characterization of UV Curable Hybrid System Based on Free Radical and Cationic Mechanism." Applied Mechanics and Materials 470 (December 2013): 141–45. http://dx.doi.org/10.4028/www.scientific.net/amm.470.141.

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A UV curable hybrid system with a dual mechanism of radical and cationic photo-polymerization, was investigated. A kind of free radical oligomer with low viscosity named hexahydrophthalic acid diglycidyl acrylate was first synthesized. The structure of the oligomer was characterization by FTIR. The UV curing processing of hybrid system was traced by real-time FTIR, and compared with free radical, cationic system. Thermal decomposition temperature and glass transition temperature of UV curing film for various system were determined by thermogravimetric analysis (TGA) and differental scanning calorimetry (DSC), respectively. And physical and mechanical properties of those curing films were analyzed and compared. The results show that the radical polymerization of double bond and cationic polymerization of epoxy group could occur simultaneously in hybrid system. The conversion rate of epoxy group for hybrid system was higher than that of epoxy group for cationic system, which demonstrated that the cationic photo-initiator (DPI·PF6) can be sensitized by the free radical photo-initiator (Irgacure 184). Compared with free radical and cationic system, the hardness and mechanical properties of hybrid system curing film were better than those of the cationic system curing film, while closed to those of free radical system.
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Ratcliffe, L. P. D., K. J. Bentley, R. Wehr, N. J. Warren, B. R. Saunders, and S. P. Armes. "Cationic disulfide-functionalized worm gels." Polymer Chemistry 8, no. 38 (2017): 5962–71. http://dx.doi.org/10.1039/c7py01306j.

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Miao, Zong Cheng, Fang Wang, Deng Deng, Lei Wang, and Jian Zhou Yang. "Synthesis of Quaternary Ammonium Salt Cationic Surfactant with Long-Chain Alkyl and Epoxy Groups." Advanced Materials Research 554-556 (July 2012): 864–67. http://dx.doi.org/10.4028/www.scientific.net/amr.554-556.864.

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The quaternary ammonium salt cationic surfactant with long-chain alkyl and epoxy groups is very important intermediate product to synthesis novel functional surfactants. In this paper, a kind of quaternary ammonium salt cationic surfactant with long-chain alkyl and epoxy groups was synthesized by traditional method with epichlorohydrin and N-octadecyldimethylamine as raw materials. During the synthesis, the best reaction conditions have been obtained, that the reaction temperature is 35 °C, the reaction time is 4 h and the best mol ratio of epichlorohydrin to timethylamine is 5:1. In addition, the synthesized intermediate with long-chain alkyl and epoxy groups plays a very important roles in the development of cationic surfactant.
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Noè, Camilla, Minna Hakkarainen, and Marco Sangermano. "Cationic UV-Curing of Epoxidized Biobased Resins." Polymers 13, no. 1 (December 28, 2020): 89. http://dx.doi.org/10.3390/polym13010089.

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Epoxy resins are among the most important building blocks for fabrication of thermosets for many different applications thanks to their superior thermo-mechanical properties and chemical resistance. The recent concerns on the environmental problems and the progressive depletion of petroleum feedstocks have drawn the research interest in finding biobased alternatives. Many curing techniques can be used to obtain the final crosslinked thermoset networks. The UV-curing technology can be considered the most environmentally friendly because of the absence of volatile organic compound (VOC) emissions and mild curing conditions. This review provides an overview of the state of the art of bio-based cationic UV-curable epoxy resins. Particular focus has been given to the sources of the bio-based epoxy monomers and the applications of the obtained products.
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Su, Haojia, Zhengchun Cai, Zhengwei lv, Yongkang Chen, and Yongxin Ji. "Synthesis of water-based cationic polyacrylate copolymer emulsion by RAFT polymerization and its application as an inkjet printing agent." Pigment & Resin Technology 49, no. 5 (June 27, 2020): 401–8. http://dx.doi.org/10.1108/prt-04-2020-0029.

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Purpose In this work, the authors used reversible addition-fragmentation transfer (RAFT) polymerization to develop a new cationic acrylate modified epoxy resin emulsion for water-borne inkjet which have the advantages of both polyacrylate and epoxy resin. The emulsion was successfully used in the canvas coating for inkjet printing. This paper aims to contribute to the development of novel cationic emulsions for inkjet printing industry. Design/methodology/approach In this work, the epoxy acrylate was synthesized from RAFT agent and epoxy resin firstly. Cationic macromolecular emulsifier was prepared by RAFT polymerization, using 2,2’-Azobisisobutyronitrile as initiator, 2-(dimethylamino)ethyl methacrylate and styrene as monomer, which was directly used to prepare the emulsion. The influences of the amount of 2-(dimethylamino)ethyl methacrylate on particle size, zeta potential and water contact angle were studied. Finally, the cationic emulsion was used to print images by inkjet printing. Findings The emulsion has the smallest particle size, the highest potential and the highest water contact angle when the DM content is 13 Wt.%. The transmission electron microscopy analysis reveals the latex particles is core-shell sphere with the diameters in the range 120–200 nm. The emulsion was successfully used in the canvas coating for inkjet printing. This work will contribute to the development of novel cationic emulsions for inkjet printing industry. Originality/value The emulsion was successfully used in the canvas coating for inkjet printing. This work will contribute to the development of novel cationic emulsions for inkjet printing industry.
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Crivello, James V., and Saoshi Liu. "Photoinitiated cationic polymerization of epoxy alcohol monomers." Journal of Polymer Science Part A: Polymer Chemistry 38, no. 3 (February 1, 2000): 389–401. http://dx.doi.org/10.1002/(sici)1099-0518(20000201)38:3<389::aid-pola1>3.0.co;2-g.

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Dissertations / Theses on the topic "Cationic epoxy"

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Matuszczak, Stephen. "An investigation of the photoinitiated cationic cross-linking polymerization of some epoxy resins." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6705/.

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As well as dealing with general topics pertinent to the project, the first chapter gives the aims of the project and reviews the theories of network formation. Particular attention is paid to the occurrence of inhomogeneous cross-linking in nonlinear chain-growth polymerizations. The second chapter reviews an important aspect of photoinitiated polymerizations, namely the photochemistry of the photoinitiator used, in this case diphenyliodonium hexafluorophosphate. The preparation and characterization of the photoinitiator and the characterization of the commercial monomers are given in chapter three. The fourth chapter reports an investigation of the effect of various parameters on the decree of cross-linking as determined by a variety of techniques. The results can be interpreted in terms of inhomogeneous cross-linking and show that irradiation combined with thermal treatment produces the highest degree of cross-linking. Chapter five deals with a study of the photo-oxidative stability of two of the photocurable resin systems. Certain monomer systems were found to exhibit a transient colouration on cure and chapter six gives a possible explanation for this effect as well as the results of experiments designed to provide additional verification. Finally, chapter seven reports the outcome of attempts to obtain low surface free energy films by the addition of small amounts of polyfluorinated monoepoxides to the conventional monomers in the hope that surface segregation of the fluorinated material would occur in the interval between application and cure of films.
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Al-Obaidani, Ammar. "Development of a photocuring system for cationic epoxy formulations using side emitting optical fibres." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/10864/.

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Photocuring of polymers and polymer composites, from epoxy resin based formulations, has been of growing interest over the past two decades. The photocuring occurs when an epoxy formulation is exposed to electromagnetic radiation, usually ultraviolet (UV) radiation. This process has been explored widely and it can be described as an open mould process by which the epoxy formulation is exposed directly to the radiation. However, for a closed mould process, thermal curing, rather than radiation curing, typically is employed. The potential of using photocuring for a closed mould process has not yet been investigated in detail. The challenge in photocuring of polymers and polymer composites in a closed mould is directing the radiation into the mould to activate the photocuring process, which is not possible using the conventional methods. Hence, for this reason the present work is focused on the development of a closed mould photocuring system using side emitting optical fibres. This photocuring system using side emitting optical fibres relies upon the optimisation of epoxy based resins. As a result, an extensive characterisation of different types of UV curable cationic epoxy resins is carried out using two pre-formulated commercial resins, formulations from bisphenol A/F, and formulations from cycloaliphatic epoxy. The formulations showed different reactivity and hardness. An important result is that the cycloaliphatic epoxy resin formulations cured much faster than the other bisphenol A/F formulations, having a more uniform hardness distribution and UV radiation transparency during the curing. Side emitting optical fibres are adopted to photocure epoxy in a closed mould. Different types of side emitting optical fibres are characterised to determine irradiation efficiency. The optical fibres had either a silica core or a PMMA core. The silica core fibres have a silicone cladding containing radiation scattering particles (either ZnO or Al2O3) and diffuser (either PA6 or ETFE). The PMMA core polymer optical fibres (PMMA POFs) have a PVDF cladding with micro-perforations as a side emission mechanism. Silica core fibres with the Al2O3 scattering particles and the PMMA core fibre are more suitable for the closed mould application as they transmitted efficiently in the UV radiation band. The high side emission characteristics of the PMMA POF compared to the silica core fibre showed higher potential for use in the closed mould photocuring process. As the polymerisation speed is influenced by the amount of flux density of the radiation source, a high flux lamp (Hg lamp, 40 W/cm2) is coupled to the side emitting optical fibres. This lamp caused thermal degradation to the PMMA POF at the launch point when in use. A cooling device is made to minimise the thermal degradation generated by radiation absorption. After improving the optical transmission stability of the PMMA POF, its side emission is enhanced by various treatments, such as permanent modification of the fibre geometry with adjusted bend radii as well as by mechanically embedding silica scattering particles into the fibre and applying micro-cuts. The developed, closed mould photocuring system consists of: enhanced side emitting PMMA POF, a cooling device, high emission Hg lamp, and a closed mould setup. 1.5 mm and 5 mm thick components, made from an optimised epoxy formulation (based on cycloaliphatic epoxy), are cured using the photocuring system. The 1.5 mm thick component (20 mm wide and 245 mm long) is cured in 45 minutes using a single PMMA POF treated with silica particles (side emission of ~81 % of the total launched emission). The 5 mm thick component (75 mm wide and 170 mm long) partly cured in 45 minutes by simultaneously using three PMMA POFs treated with silica particles and geometric modification (side emission of ~96 % of the total launched emission). This sample eventually cured with time (up to 36 hours) due to dark reaction. The efficiency of the developed closed mould photocuring system is validated by curing a 1.5 mm thick component made from a pre-formulated polyester resin formulation. This component cured in 7 minutes (30 mm wide and 245 mm long) using a single PMMA POF treated with silica particles.
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Lee, Jihean Palmese Giuseppe R. "Cationic polymerization of glycidyl ethers and furans : improved electron beam and UV cured epoxy networks /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/2538.

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Higgins, Bernadette Ann. "Carbon Nanofiber-Polymer Composites for Electronic Applications." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1143655787.

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Bigand, Virginie. "Modifications chimiques des hémicelluloses pour une application papetière." Thesis, Lyon 1, 2011. http://www.theses.fr/2011LYO10213.

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Dans les procédés classiques d'extraction de la cellulose pour la fabrication de la pâte à papier à partir de bois, les hémicelluloses sont dégradées et sont brûlées pour alimenter l'usine en énergie. En incluant une étape préalable d'extraction de ces polysaccharides, ils pourraient alors être réintroduits en aval du procédé, après cationisation, en tant qu'agent de renfort dans la pâte à papier. Dans ce travail, la cationisation de deux hémicelluloses modèles commerciales de type galactomannane et xylane a été effectuée par éthérification avec un époxyde cationique en solution aqueuse basique, avec des degrés de substitution de 0,1 à 1,3. Les paramètres prépondérants de la réaction sont la concentration des espèces et la quantité d'agent éthérifiant, tandis que la température et le temps de réaction influent principalement sur le rendement massique. Un plan d'expérience a permis de modéliser l'interaction entre les quantités de soude et d'époxyde et d'optimiser les conditions en fonction du DS avec une efficacité de réaction de 50%. La cationisation a également été appliquée à deux hémicelluloses extraites au FCBA. La mise en oeuvre de la réaction en absence de solvant a permis d'atteindre une efficacité de réaction de 70 à 90% et de réduire considérablement les quantités de réactif utilisées et d'effluents à traiter. Parmi la gamme de DS, les dérivés cationiques de DS 0,3 ont donné les meilleures propriétés après ajout dans la pâte à papier, le galactomannane étant plus efficace que le xylane. Enfin, la réticulation des chaînes du xylane extrait a permis d'augmenter les propriétés physiques du papier de 15% supplémentaires
With current paper pulp processes, hemicelluloses are decomposed during the extraction of cellulose fibres. By including a previous step of hemicellulose extraction, these compounds could be reused as additives in the paper pulp, instead of cationic starch. In this work, two model galactomannan and xylan hemicelluloses were cationized in aqueous solution under basic conditions by etherification with a cationic epoxide. Degrees of substitution from 0.1 to 1.3 were obtained. Species concentration and epoxide amount appeared as preponderant parameters of the reaction. With an experimental design, the interaction between sodium hydroxide and epoxide amounts was modelized, and reactional conditions were optimized depending on the desired DS with a reaction efficiency of 50%. Then, cationisation was applied to two hemicelluloses extracted in FCBA. The reaction was also carried out in absence of solvent with a reaction efficiency of 70-90%, by minimising reagents consumption and effluents. Cationic derivatives with DS 0.3 gave the best performance to increase the paper resistance when they were added in paper pulp, galactomannan being more efficient than xylan. Chain reticulation allowed increasing mechanical properties of paper of 15% for the extracted xylan
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Vidil, Thomas. "Contrôle du procédé d'élaboration et des propriétés d'un matériau époxy via la chimie supramoléculaire." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066142.

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Contrôler la gélification des résines époxy est un enjeu majeur de la chimie des matériaux thermodurcissables. Dans cette étude, nous décrivons une méthode de contrôle du temps de gel (tgel) et de la conversion au point de gel (xgel) dans le cas de la polymérisation cationique de résines époxy commerciales. Pour ce faire, des additifs hydroxylés sont utilisés comme agents de transfert afin de contrôler xgel. Parallèlement, des additifs de type oligo-oxyéthylène permettent de contrôler tgel en complexant les amorceurs de la polymérisation (cations aniliniums). La combinaison de ces deux leviers de contrôle permet d'explorer une large gamme de valeurs de tgel et de xgel. Lorsqu'un oligo-oxyéthylène cyclique (18-crown-6) est utilisé, les cations aniliniums sont stabilisés sur de très longues périodes grâce à de fortes interactions de type " clé-serrure ". En l'absence d'agent de transfert, une élévation modérée de la température est suffisante pour observer la dissociation du complexe aniliniumo18-crown-6 suivie d'un rapide amorçage de la polymérisation. Ce complexe est isolable et peut être utilisé comme un amorceur thermodéclenchable. En présence d'agent de transfert, une élévation de la température s'accompagne d'un long retard à la polymérisation (temps d'induction) suivi d'une rapide réticulation du matériel. La composition chimique du mélange initial permet de contrôler le temps d'induction. Ainsi, la réticulation du matériel devient programmable dans le temps, à la manière d'une minuterie. Cette chimie est ensuite appliquée à la copolymérisation de résines mono- et di-époxy afin de contrôler la densité de réticulation du matériel et donc ses propriétés mécaniques
Controlling the pot life and the gelation of epoxy resins is a crucial issue in thermosets processing. In this study, we report about the control of the gel time (tgel) and the gel conversion (xgel) for the cationic polymerization of commercial epoxy resins. To this end, hydroxyl additives are used as chain transfer agent to control xgel. Concurrently, oligo(ethylene oxide) additives are used to vary tgel as a result of the supramolecular complexation of the anilinium cations responsible for the polymerization’s initiation. We show that the combination of these two control levers enables the exploration of a wide range of tgel and xgel values. When a cyclic oligo(ethylene oxide) (18-crown-6) is used, anilinium cations are stabilized on very long period as a result of strong host-guest interactions. In absence of transfer agent, a slight increase of temperature is enough to observe the dissociation of the anilinium•18-crown-6 complex and the fast initiation of polymerization. The anilinium•18-crown-6 complex can be isolated and used as a thermoresponsive initiator presenting a high apparent activation energy. When used in combination with hydroxyl additives, a temperature increase results in a long delay of polymerization followed by the rapid completion of the material’s reticulation. By varying the composition of the initial mixture it is possible to tailor the duration of the polymerization’s delay. Thus, the resulting system is programmable and exhibits a clock like behavior. This chemistry is then extended to the copolymerization of diepoxy and monoepoxy resins to control the crosslink’s density of the material and thus, the properties of the final networks
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Butzloff, Peter Robert. "Charge Interaction Effects in Epoxy with Cation Exchanged Montmorillonite Clay and Carbon Nanotubes." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4786/.

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The influence of charge heterogeneity in nanoparticles such as montmorillonite layered silicates (MLS) and hybrid systems of MLS + carbon nanotubes was investigated in cured and uncured epoxy. Epoxy nanocomposites made with cation-exchanged montmorillonite clay were found to form agglomerates near a critical concentration. Using differential scanning calorimetry it was determined that the mixing temperature of the epoxy + MLS mixture prior to the addition of the curing agent critically influenced the formation of the agglomerate. Cured epoxy samples showed evidence of the agglomerate being residual charge driven by maxima and minima in the concentration profiles of thermal conductivity and dielectric permittivity respectively. A hybrid nanocomposite of MLS and aniline functionalized multi walled nanotubes indicated no agglomerates. The influence of environmentally and process driven properties on the nanocomposites was investigated by examination of moisture, ultrasound, microwaves and mechanical fatigue on the properties of the hybrid systems. The results point to the importance of charge screening by adsorbed or reacted water and on nanoparticulates.
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Devaux, Ophélie. "Analysis and optimization of mixed-mode conical adhesively bonded joints under thermo-mechanical loadings." Thesis, Brest, 2015. http://www.theses.fr/2015BRES0048/document.

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Dans I'industrie spatiale, I'optimisation des structures composites du point de vue cycles de fabrication, gain de masse et amélioration des performances passe aujourd'hui par I'introduction de jonctions collées en remplacement/complément de liaisons boulonnées ou rivetées. Les lanceurs sont des structures complexes qui nécessitent de prendre en compte les contraintes liées à la fabrication de structures de grandes tailles, I'influence des conditions de transport et de stockage, ainsi que les différents spectres de chargements thermo-mécaniques rencontrés au cours de la phase de lancement. Le but de ce travail a été de développer un outil prédictif du comportement mécanique de I'adhésif Hysol EA-9321, matériau utilisé dans cette étude, à tout instant du cycle de vie de la structure sur lequel il est utilisé, la structure SYLDA. La caractérisation et la modélisation d'un couplage thermo-cinétique d'un tel adhésif ont tout d'abord été réalisées en vue de déterminer la distribution du taux de polymérisation et de la température dans un assemblage collé quel que soit le chargement thermique appliqué. Le comportement mécanique de l'adhésif a ensuite été étudié expérimentalement via I'essai Arcan Evolution, ce qui a constitué une base de données expérimentales à divers taux de polymérisation adaptée à I'identification du modèle de comportement. Plusieurs modèles élasto-plastique et élasto-visco-plastique basés sur celui de Mahnken-Schlimmer ont été implantés dans un code de calcul éléments finis afin de prédire le comportement 3D de l'adhésif Hysol EA-9321. Une procédure globale d'identification, basée sur un couplage entre calculs éléments finis et une procédure d'optimisation, a permis d'identifier les différents paramètres des lois de comportement. Une extension de ces modèles à la visco-élasticité a été numériquement proposée. Enfin, une comparaison numérique entre une liaison conique et une liaison semblable à celle trouvée sur la structure spatiale étudiée a permis de proposer un essai représentatif du comportement de I'adhésif sur un tel assemblage. Cet essai servira, dans une étude complémentaire, à valider les modèles de comportement développés
In the aerospace industry, composite structures are nowadays optimized with adhesively bonded joints supplemented by/or completed with mechanical fasteners such as bolts, rivets or welds. The structural design of launch vehicles is complex and must take into account lot of constraints related to large-scale structures, influence by environment conditions during storage, transport stages and thermo-mechanical stresses applied during launcher's flight. The purpose of this work was to provide a numerical tool for predicting the mechanical behaviour of the Adhesive Hysol EA-9321 in a spatial bonded assembly such as the SYLDA structure during its life course. First of all, a thermo-kinetic coupling was experimentally and numerically investigated to describe the couple (curing degree-temperature) in a bonded assembly regardless of the thermal load applied. Then, an experimental database was made by studying the mechanical behaviour of the adhesive under proportional loadings, using the Arcan Evolution experimental device. Cure-dependent elastoplastic and elasto-visco-plastic model based on Mahnken-Schlimmer constitutive laws were proposed in order to describe the 3D mechanical behaviour of the adhesive Hysol EA-9321. A global identification strategy allowed identifying material parameters by coupling finite element computations and optimization procedure. An extension of those models to the visco-elasticity was evenly provided. At last, a conical bonded joint and a bonded assembly in the SYLDA structure were numerically compared to propose a test representative of the adhesive behaviour in the SYLDA. The latter will aim at validating the constitutive laws established
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Chen, Jen-Wei, and 陳正威. "Synthesis and Electrodeposition Properties of Cationic Epoxy Resin." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/46869493233856516121.

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HOU, JUN-HUI, and 侯俊輝. "Syntheses and applications of modified cationic epoxy resins." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/98762675496598932208.

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碩士
大同工學院
化學工程研究所
78
(A) 本篇合成一系水溶性陽離子樹脂，由二乙基胺與環氧樹脂反應生成三級胺末端之 樹脂後，側鏈接上交鏈基2-乙基乙醇杜塞 TDI／二乙基胺乙醇杜塞 TDI而成。這些樹 脂其側鏈中醇基與半杜塞-TDI之莫耳比為1：1，改變及側鏈中三級胺之相對量，探討 其樹脂性質與電著性質，由實驗結果發現，側鏈交鏈基所含之三級胺基之比率改變時 ，對樹脂電著液之諸多性質影響頗大。三級胺基比值提高時，其乳化液之PH亦愈高， 且皮膜之交鏈性在低溫時亦愈高。樹脂乳化液之導電性，電著滲透力會隨三級胺基量 之增加而增加，但電著速率和電著量則隨三級胺基量之增加而減少，當樹脂之側鏈三 級胺占總側鏈之20∼60% 時，該樹脂電著膜之物理化學性質適合實用規格。 (B) 本篇合成之自我交鏈型環氧樹脂是由苯甲胺與環氧樹脂反應成苯甲胺改質環氧樹 脂，再以二級胺開環得到環氧樹脂—加成體，然後與2-EH-TDI之 TDI半保護交鏈體反 應而得。其特點是由苯甲胺衍生之三級胺會增加樹脂中三級胺之含量，因此陽離子之 量會增加，進而提高其導電度與滲透力。由實驗結果顯示，由此種樹脂所配成之電著 液欲其乳化之PH值適當範圍約在5.3∼4.6，而助溶劑 BCS之添加量約在 4∼8%。另外 ，PH值之提高會使電著量與破壞電壓也跟著增加，但導電度與電著滲透力會降低。又 BCS 量之增加會降低其電著量與破壞電壓，至於樹脂濃度之增加會提高其導電度，電 著滲透力與電著量。且由此種樹脂配成之電著液進行電著熱硬化後之電著膜其附著度 ，耐酸鹼性與硬度皆適合實用規格。
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Book chapters on the topic "Cationic epoxy"

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Sangermano, Marco, Stephen N. Falling, and James V. Crivello. "The Photoinitiated Cationic Polymerization of 3,4-Epoxy-1-butene." In ACS Symposium Series, 266–76. Washington, DC: American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2003-0847.ch023.

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Olsson, R. T., H. E. Bair, V. Kuck, and A. Hale. "Thermomechanical Studies of Photoinitiated Cationic Polymerization of a Cycloaliphatic Epoxy Resin." In ACS Symposium Series, 317–29. Washington, DC: American Chemical Society, 2003. http://dx.doi.org/10.1021/bk-2003-0847.ch028.

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Yang, Zheqin, Jananee Narayanan, Matthew Ravalli, Brittany T. Rupp, and Chang Y. Ryu. "Structure-Property Relationships of Epoxy Thermoset Networks from Photoinitiated Cationic Polymerization of Epoxidized Vegetable Oils." In Sustainable Polymers from Biomass, 209–26. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527340200.ch9.

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Park, Soo Jin, Su Ja Seok, and Byung Gak Min. "Thermal and Mechanical Properties of Epoxy/Polyurethane Blend System Initiated by Cationic Latent Thermal Catalyst." In Solid State Phenomena, 215–18. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-27-2.215.

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"Solid State NMR Investigation of Cationic Polymerized Epoxy Resins." In Handbook of Advanced Materials Testing, 711–20. CRC Press, 1994. http://dx.doi.org/10.1201/9781482277616-41.

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Conference papers on the topic "Cationic epoxy"

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Chia, N. K., and F. Y. C. Boey. "LOW ENERGY ELECTRON BEAM RADIATION CATIONIC POLYMERIZATION OF A CYCLOALIPHATIC EPOXY." In Processing and Fabrication of Advanced Materials VIII. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811431_0113.

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"PREPARATION AND PROPERTIES OF SELF-EMULSIFIED CATIONIC WATERBORNE EPOXY RESIN MODIFIED SIZING AGENT." In International Conference on New Materials and Intelligent Manufacturing (ICNMIM). Volkson Press, 2018. http://dx.doi.org/10.26480/icnmim.01.2018.167.169.

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Voigt, Anja, Gisela Ahrens, Marina Heinrich, Andrew Thompson, and Gabi Gruetzner. "Improved adhesion of novolac and epoxy based resists by cationic organic materials on critical substrates for high volume patterning applications." In SPIE Advanced Lithography, edited by Thomas I. Wallow and Christoph K. Hohle. SPIE, 2014. http://dx.doi.org/10.1117/12.2046258.

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