申请人:GENERAL ELECTRIC COMPANY
公开号:EP0939101A2
公开(公告)日:1999-09-01
The compression set of elastomeric silicone compositions, addition cured injection moldable compositions, is reduced by the incorporation of nitrogen compounds wherein the nitrogen possesses at least one organic substituent and the nitrogen is tetravalent wherein the nitrogen is cationic. The adhesion of such compositions to thermoset or thermoplastic polymer substrates is improved by the addition of bis(trimethoxysilylpropyl)fumarate and a disilanol that may or may not contain alkenyl groups. The lubricity of such compositions is improved by the addition of compounds selected from the group consisting of diorganosiloxanes such as polydimethylsiloxanes, phenyl containing siloxanes such as copolymers of diphenylsiloxane with diorganosiloxanes and copolymers of methylphenylsiloxane with diorganosiloxanes, fluorosilicones such as silicones containing trifluoropropyl substituted siloxanes, polydimethylsiloxanes, aliphatic and aromatic hydrocarbons that are liquid between 0 °C and 100 °C without adversely affecting the adhesion of the composition.
通过加入含氮化合物(其中氮至少具有一个有机取代基)和四价氮(其中氮为阳离子),可降低弹性硅树脂组合物和固化注射成型组合物的压缩永久变形。通过添加双(三甲氧基硅丙基)富马酸酯和二硅烷醇(可含或不含烯基),可改善此类组合物与热固性或热塑性聚合物基材的粘附性。添加选自以下组别的化合物可改善此类组合物的润滑性:二甘醇硅氧烷,如聚二甲基硅氧烷;含苯基硅氧烷,如二苯基硅氧烷与二甘醇硅氧烷的共聚物;甲基苯基硅氧烷与二甘醇硅氧烷的共聚物、含氟硅酮,如含三氟丙基取代硅氧烷的硅酮、聚二甲基硅氧烷、脂肪族和芳香族碳氢化合物,它们在 0 °C 至 100 °C 之间呈液态,不会对组合物的粘附性产生不利影响。