一种含可溶性聚铁有机硅氧烷的硅橡胶耐热添加剂

本发明涉及化工技术领域,具体的说是一种含可溶性聚铁有机硅氧烷的硅橡胶耐热添加剂,是由主料和辅料组成,其特征在于：主料含有聚铁有机硅氧烷,辅料含有端羟基聚硅氧烷、高温硫化硅橡胶生胶和金属氧化物。其配方按重量份数来计：聚铁有机硅氧烷100份,端羟基聚硅氧烷0～80份,     

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。     

中国专利

计量加入到液体含硅材料中的液体添加剂的方法／ＣＮ１２３３７４９Ａ用于美容或治疗皮肤病的组合物　该组合物含有至少一种聚硅氧烷水乳剂。／ＣＮ１２３３４６３Ａ合成纤维处理剂　它是由聚醚化合物、特定的直链型聚醚改性聚有机硅氧烷和离子性表面活性剂构成，且以一定比例含有这些化合物。／ＣＮ１２３３６８６Ａ含聚二有机硅氧烷脲的混合物　／ＣＮ１２３４０５１Ａ防污涂料　本发明涉及含有机聚硅氧烷作粘合剂和无重金属的微囊化的杀生物剂作活性物质的防污涂料的生产方法。／ＣＮ１２３４０５９Ａ软接触透镜　一种含聚硅酮水凝胶的软…     

中国专利

以硅橡胶为基础的耐焰组成物/CN1715332A制备含硅聚硫化物型聚合物的方法/CN1717432A具有磷酰胆碱基的聚硅氧烷及其制造方法/CN1717433A硅氧烷基聚酰胺弹性体/CN1717434A含有有机硅烷、有机硅氧烷化合物形成的绝缘膜用材料、其制造方法和半导体器件/CN1717792A聚酯改性聚硅氧烷     

研发动态

改性有机硅耐高温防腐涂料；水性有机硅改性聚氨酯；γ-甲基丙烯酰氧基烃基硅烷；GE公司推出有效增强轮胎使用功效的NXT硅烷；氨基聚硅氧烷乳液；聚二甲基硅氧烷-梯形苯基硅倍半氧烷。     

GUV-1051紫外光固化光纤涂料

中蓝晨光化工研究院承担了国家光通信技术攻关项目——紫外光固化硅橡胶涂料的研制。开发了“无氢耗”，硬化性优良的紫外光固化型硅橡胶光纤涂料。这种新型涂料是通过含巯基官能团的聚硅氧烷与含乙烯基的聚有机硅氧烷在紫外光照射下进行加成交联反应。     

发光二极管封装用有机硅材料（一）

介绍了发光二极管(LED)的特点.列举了LED用环氧/有机硅混合树脂封装料(加成型有机硅与环氧树脂混合体系、环氧改性聚有机硅氧烷与环氧化合物混合体系)、含环氧基环烷基硅树脂封装料的主要成分及配制,LED的制作及评价等;加成型苯基硅树脂封装料中含Si-H基硅氧烷低聚物作交联剂的苯基硅树脂、含Si-H基、苯基的硅氧烷低聚物作交联剂的苯基硅树脂封装料的主要成分及配制等.     

糖基改性聚硅氧烷表面活性剂

正糖基为良好的亲水基,有机硅氧烷为良好的疏水基,集成两者的优点合成糖基改性有机硅表面活性剂引起了越来越多的关注。吕梁大学和中国日化工业研究院团队通过酰胺化反应设计并合成了3种含不同硅氧烷主链长度(摩尔质量)的同构葡糖酰胺改性聚硅氧烷(GL@Si)表面活性剂。3种GL@Si均表现出良好的表面活性。随     

水性聚氨酯涂料的改性方法

综述了用丙烯酸酯类、含乙烯基的单体、环氧树脂及有机硅氧烷等多种物质对水性聚氨酯涂料的化学改性方法,介绍了各种改性工艺的优缺点,并对改性机理进行了探讨。     

特殊结构的有机硅表面活性剂(续)

介绍了阴离子型有机硅表面活性剂、含酚基或芳氨基的聚醚改性硅油、反应性聚有机硅氧烷/聚内酯共聚物、含糖基的有机硅表面活性剂的特点、结构、合成方法及应用。     

Flexibility improvement of epoxy resin by using polysiloxanes and their derivatives

A study of increasing the flexibility and lowering the internal stress of the cured epoxy resing was carried out by using polysiloxanes capped with functional groups and premaking polysiloxane particles with d = 1.1 μm and narrow distribution. Polysiloxanes capped with functional groups were prepared by the reaction of X-22-163B with bisphenol-A, hexanedioic acid, and decanedioic acid. Poly(dimethylsiloxane-b-arylester) was synthesized by the reaction of poly(dimethylsiloxane) (X-22-162C) with arylester oligomers. Polysiloxane particles were obtained by cycling the mixture of polysiloxanes containing a vinyl group and a?Si–H group, respectively, emulsifier, and water in homogenizer. When oily polysiloxanes were used to improve the flexibility of epoxy resin, good compatibility of polysiloxanes with epoxy resion, and high molecular weight capped with epoxy group favor the formation of small-sized particles and homogeneous dispersion in the cured matrix. Comparisons were made among the epoxy resing modified with oily polysiloxanes capped with different functional groups. The results indicate that lightly crosslinked polysiloxane particles with d = 1.1 μm and narrow distribution have the greatest increase of elongation and biggest decrease of internal stress. The reason for this is discussed. © 1994 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     

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     

Preparation and characterization of polysiloxane‐modified epoxy resin aqueous dispersions and their films

Polysiloxane‐modified epoxy resin aqueous dispersions were prepared by the reaction of amino‐polysiloxane (APS) with a graft epoxy resin that was synthesized with a diglycidyl ether of bisphenol A type epoxy resin and styrene/acrylic acid. The measurements of the epoxy values and FTIR spectra confirmed that this reaction really took place. The modified aqueous dispersion exhibits high viscosity, small particle size, and nearly the same surface tension as the unmodified one. Therefore, this indicates that the siloxane segments could be encapsulated into graft epoxy resin particles during the water dispersion process. For APS‐modified films, the thermal stability and water resistance are remarkably enhanced. Furthermore, lowering of the hardness and surface tension for these films was also observed and the surface composition was measured by X‐ray photoelectron spectroscopy. The experimental data indicate that the siloxane segments easily migrate onto the surface during the film formation process and finally enrich on the surface of the APS‐modified film. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 880–885, 2005     

环氧改性有机硅树脂的制备及其性能研究

采用化学方法制备了环氧改性有机硅树脂。通过红外分析表明,环氧树脂与有机硅树脂发生了化学反应。研究发现：环氧改性有机硅树脂的水接触角、瓦均有变化,微观形态仍呈均相结构。研究还发现：随环氧树脂用量增大,改性有机硅树脂微观结构的粗糙度提高,水接触角增大。     

聚硅氧烷改性环氧树脂

本文综述了将聚硅氧烷引入到双酚－Ａ型环氧树脂的四种途径,即,活性端基反应;利用硅氧烷偶联剂生成嵌段共聚物;取代聚硅氧烷部分侧基和预先制备聚硅氧烷粒子,并介绍了聚硅氧烷改性该种环氧树脂的固化动力学。     

Simultaneously Increasing Impact Resistance and Thermal Properties of Epoxy Resins Modified by Polyether-Grafted-Epoxide Polysiloxane

In this paper, polyether-grafted-epoxide polysiloxane (FEPMS) was synthesized via hydrosilylation among poly(methylhydrosiloxane) (PMHS), allyl polyoxyethylene polyoxypropylene ether (F6) and allyl glycidyl ether to modify Diglycidyl Ether of Bisphenol A (DGEBA). The morphology, thermal properties, and toughness of all cured samples were investigated by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and impact testing. Results indicated that grafted polysiloxane can be well dispersed in epoxy matrix, and the epoxy resin modified with FEPMS at relatively low addition levels exhibited higher thermal properties and improved toughness than the neat epoxy resin.     

有机硅改性双酚F环氧树脂热性能研究

以TMA和TGA研究了含酚羟基的有机烷氧基硅烷及3,3′,3″-三羟基苯氧基硅烷三缩水甘油醚等多种自行设计、合成的有机硅改性剂改性双酚F环氧树脂的热性能。研究结果表明,有机硅可降低改性树脂的线胀系数,但端环氧基脂肪族聚硅氧烷及含酚羟基的二官能度有机硅的加入均使固化物玻璃化温度降低10℃以上;含环氧基的多官能度有机硅改性剂3,3′,3″-三羟基苯氧基硅烷三缩水甘油醚的加入可使线胀系数降低约20%,内应力指数降低约20%,抗开裂指数提高50%以上,固化物玻璃化温度基本不变,热分解温度有较大幅度的提高,是一种理想的环氧树脂增韧改性剂,可用于电子封装等行业用环氧树脂的改性。     

UV固化水性环氧树脂的改性研究

用顺丁烯二酸酐对双酚A型环氧树脂(E-51)进行化学改性引入亲水性基团和不饱和基团，成盐后制得UV固化水性环氧树脂体系。确定了最佳的原料配比、反应温度和时间，并利用红外光谱对产物的结构进行了表征。结果表明：该改性E-51环氧树脂可与水以不同的配比形成水溶液或水乳液，体系具有优良的稳定性；该体系可用紫外光固化。