摘要
采用粘度为２０～４０ｍＰａ·ｓ的羟基硅油、二甲基二氯硅烷及甲基三乙氧基硅烷为原料，控制γ（ＣＨ３／Ｓｉ）＝１３～１４，二甲基二氯硅烷与羟基硅油的质量比为７０∶３０，并采用滴加水的方式于５０℃共水解１ｈ，制备出具有良好硬度和弹性的甲基硅树脂。
The silicone resin with good hardness and elasticity was prepared by cohydrolysis of terminal hydroxyl polydimethylsiloxane with viscosity 2040 mPas,dimethyldichlorosilane and methyltriethoxysilane,r(CH3/Si)being 1314,the ratio of dimethyldichlorosilane and terminal hydroxyl polydimethylsiloxane being 7030 and water being added dropwise over 30 minutes at 50 .
关键词
硅树脂
合成
工艺
terminal hydroxyl polydimethylsiloxanedimethyldichlorosilanemethyltriethoxysilanesilicone resin
