聚硅氧烷改性环氧树脂的研究进展

综述了制备聚有机硅氧烷改性环氧树脂的4种途径：含羟基或烷氧基的聚硅氧烷与环氧树脂的反应、含氨基的聚硅氧烷与环氧树脂的反应、含硅氢基的聚硅氧烷与环氧树脂的反应、含杂原子的聚硅氧烷与环氧树脂的反应,并讨论了聚有机硅氧烷改性环氧树脂对环氧树脂的相结构、机械性能和热稳定性的影响.     

一种玻璃纤维/环氧树脂杂化改性硅橡胶模具胶及其制备方法

<正>由上海工程技术大学申请的专利(公开号CN 103788660B,公开日期2016-11-02)"一种玻璃纤维/环氧树脂杂化改性硅橡胶模具胶及其制备方法",涉及的模具胶配方为:含丙烯基端基的聚硅氧烷96~98,含氢聚硅氧烷2~4,催化剂0.2~0.4,玻璃纤维5~10,环氧树脂5~15,表面改性剂3~5。其制备方法为:将玻璃纤维干烧处理,再置于表面改性剂中进行表面     

国内外近期有关胶黏剂文献的增注题录

07-039室温固化耐热环氧树脂胶黏剂的制备和性能研究[采用氨基聚硅氧烷和羧基终端的丁二烯-丙烯氰(CTBN)对环氧树脂进行改性,并且制备了室温固化耐热环氧树脂胶黏剂。讨论了CTBN和氨基聚硅氧烷的含量、环氧树脂的种类对胶黏剂性能的影响。当环氧树脂和CTBN、氨基聚硅氧烷反应改性,然后和F-44和E-51混合,表现出了良好的剪切强度]Liu,Pei-ran;Li,Shu-cai.Tianjin University of Science and Technology,Tianjin,Peop.Rep.China.Zhongguo Jiaonianji(2007),16(3),31-33.07-040使用各向异性导电胶黏剂粘结电子仪器组件制造电路板的…     

一种玻璃纤维/环氧树脂杂化改性硅橡胶模具胶及其制备方法

正授权公告号:CN 103788660B授权公告日:2016年11月2日专利权人:上海工程技术大学发明人:王军华、王锦成、赵雯本发明涉及一种玻璃纤维/环氧树脂杂化改性硅橡胶模具胶及模具制备方法。模具胶的组分和用量为:含丙烯基端基的聚硅氧烷96~98,含氢聚硅氧烷2~4,催化剂0.2~0.4,玻璃纤维5~10,环氧树脂5~15,表面改性剂3~5。模具制备步骤为:1)将玻璃纤维干烧,并用表面改     

环氧树脂及其涂料

无溶剂型室温固化双组分环氧树脂组合物及其环氧一聚硅氧烷涂料固化的产物;一种非离子型自乳化固体环氧树脂及其乳液的制备方法     

研发动态

乳液型防火涂料黏度的影响因素;核壳乳液聚合合成硅丙乳液稳定性的影响因素;有机氟改性聚硅氧烷;聚硅氧烷对天然橡胶表面耐溶剂性的影响;含氟硅环氧树脂涂料;高硅含量有机硅／丙烯酸酯乳液……     

研发动态

乳液型防火涂料黏度的影响因素;核壳乳液聚合合成硅丙乳液稳定性的影响因素;有机氟改性聚硅氧烷;聚硅氧烷对天然橡胶表面耐溶剂性的影响;含氟硅环氧树脂涂料;高硅含量有机硅／丙烯酸酯乳液……     

有机硅改性环氧树脂和它的电子封装材料及其制法

本发明涉及一种有机硅改性环氧树脂及其制备方法和由其制成的电子封装材料及其该电子封装材料的制备方法。该有机硅改性环氧树脂是按重量份数计,常温常压下,将100份的双酚A型环氧树脂与0-20份的烷基硅和0-100份的氯端基聚硅氧烷在有机溶剂中反应,反应完毕后,洗涤除去季铵盐,再减压蒸馏除去有机溶剂,得到产物改性树脂。     

环氧树脂及其涂料

200707011空气调节系统用复合涂料体系;200707012破坏的金属表面恢复用含三乙醇胺处理铁粉的环氧树脂组合物;200707013现场应用的环境友好型环氧树脂地板涂料组合物;200707014环氧背面漆;200707015环氧树脂组合物及环氧-聚硅氧烷涂料组合物.     

有机硅改性环氧树脂增韧研究进展

综述了有机硅改性环氧树脂增韧研究的方法、机理；主要从两个方面介绍了有机硅改性环氧树脂增韧的研究现状：硅橡胶改性环氧树脂增韧研究、聚硅氧烷改性环氧树脂增韧研究，并介绍了近期进展。     

Morphology and properties of polydimethylsiloxane-modified epoxy resin

The morphology and fracture toughness of epoxy resins modified with amino-terminated polydimethylsiloxane (ATPDMS), differing in their molecular weight, and the degree of the preliminary reaction in the melt state were investigated. Tetramethyl biphenol diglycidyl ether (TMBPDGE) was used as the base epoxy resin. The degree of preliminary reaction between epoxy and polysiloxane increased with the decrease of the molecular weight of polysiloxane in the melt state. When the low molecular weight polysiloxane (AT900) was mixed with high molecular weight polysiloxane in the preliminary reaction, the low molecular weight polysiloxane enhanced the compatibility between the epoxy resin and the high molecular weight polysiloxane and produced smaller size and narrow distribution of polysiloxane particles. The small and highly concentrated polysiloxane particles, as determined by scanning electron microscopy improved the fracture toughness of the epoxy resin. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 941–955, 1997     

Physical aging of polydimethylsiloxane-modified epoxy resin

The thermal expansion coefficient and physical aging behavior of cured epoxy resins modified with amino-terminated polydimethylsiloxane were investigated. The epoxy resin was tetramethyl biphenol diglycidyl ether. Two factors influenced the thermal expansion behavior and the free volume relaxation of the polysiloxane-modified epoxy systems. One was the miscibility between the epoxy resin and the polysiloxane and the flexibility of the chains in the network system. The intrinsic thermal expansion of the network chains and the volume relaxation increased as a result of building polysiloxane molecules into the network structure. The other factor was the size and concentration of the dispersed polysiloxane particles. The increased local free volume at the interface between the epoxy matrix and the polysiloxane particle resulted in a higher thermal expansion coefficient and led to a large driving force for the volume relaxation during annealing. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 1291–1300, 1998     

有机硅改性环氧树脂的研究进展

综述了有机硅改性环氧树脂的主要方法及增韧机理,并展望了有机硅改性环氧树脂的发展趋势。     

环氧化合物改性侧链氨基聚硅氧烷的研究

以5种单官能缩水甘油醚——腰果酚缩水甘油醚（NC-513）、烯丙基缩水甘油醚（AGE）、苄基缩水甘油醚（692）、正丁基缩水甘油醚（660）及甲基丙烯酸缩水甘油酯（GMA）和侧链氨基聚硅氧烷为原料,通过环氧基与氨基的反应对侧链氨基聚硅氧烷进行改性。研究了不同反应条件下,改性聚硅氧烷的凝胶行为,表征了改性聚硅氧烷的结构。结果表明,NC-513与侧链氨基聚硅氧烷的反应活性最大;且室温以上时,改性聚硅氧烷凝胶的形成不受反应溶剂及原料反应官能团量之比的影响,所形成的凝胶为氢键物理交联;当温度升高时,会伴有羟基缩合的化学交联,烯键不与氨基反应。由于GMA中烯键和环氧基均与氨基反应,故形成化学交联凝胶。AGE、692、660改性聚硅氧烷在有溶剂的体系形成凝胶,在无溶剂情况下不形成凝胶。     

重防腐涂装工程中三种高档面漆的比较——聚氨酯/氟碳/聚硅氧烷

介绍了当前重防腐涂装工程中聚氨酯、氟碳、聚硅氧烷3种面漆,并从涂料成膜机理、性能、施工等方面作了对比,对环氧聚硅氧烷和丙烯酸聚硅氧烷2种面漆进行了分折。     

Modification of epoxy resins with polysiloxane TPU for electronic encapsulation. II

Polyol or polysiloxane thermoplastic polyurethanes (TPU) were used to reduce micro-cracking in cresol–formaldehyde novolac epoxy resin cured with phenolic Novolac resin for electronic encapsulation application. A stable dispersion of TPU particles in an epoxy resin matrix was achieved via the epoxy ring opening with isocyanate groups of urethane prepolymer to form an oxazolidone. The effects of structure and molecular weight of TPU in reducing the stress of electronic encapsultant were investigated. The mechanical and dynamic viscoelastic properties and morphologies of TPU modified epoxy networks were also studied. A “sea-island” structure was observed via SEM. The dispersed polysiloxane TPU rubbers not only effectively reduce the stress of cured epoxy resins, by reducing flexural modulus and the coefficient of thermal expansion, but also increase the glass transition temperature because of the rigid oxazolidone structure formation. Electronic devices encapsulated with the polysiloxane TPU modified epoxy molding compounds exhibited excellent resistance to the thermal shock cycling test and resulted in extended device life. © 1996 John Wiley & Sons, Inc.     

聚硅氧烷改性环氧树脂的研究进展

综述了聚硅氧烷改性环氧树脂的机理和方法,对几种环氧树脂增韧方法进行了比较。通过国内外的研究进展介绍了物理共混和化学共聚2种改性方法,证实化学共聚改性的产物性能更佳,最后对其发展进行了展望。     

Polydimethylsiloxane containing isocyanate group-modified epoxy resin: Curing,characterization, and properties

A synthesized polydimethylsiloxane containing an isocyanate group was used to improve the flexibility and to reduce the internal stress of epoxy resin cured with MDA (4,4′-methylene dianiline). The effect of polysiloxane content on the curing kinetics of a novolac-type epoxy modified with an isocyanate group was investigated. It was found that the modified epoxy resin showed significant improvement in impact strength. The polysiloxane containing isocyanate groups effectively depressed the internal stress of cured epoxy resins by reducing the flexural modulus and the coefficient of thermal expansion, while the glass transition temperature was increased. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 2739–2747, 1999     

双官能基改性聚有机硅氧烷的合成及应用研究进展

介绍了氨基和聚醚改性聚硅氧烷、氨基和酰氨基改性聚硅氧烷、氨基和长链烷烃改性聚硅氧烷、环氧基和聚醚改性聚硅氧烷及羧基和长链烷烃改性聚硅氧烷等双官能基改性聚有机硅氧烷的特性，简述了合成过程及应用工艺，并对其前景进行了预测。