摘要
以1,3-二乙烯基-1,1,3,3-四甲基二硅氧烷和正硅酸乙酯为主要原料,以浓盐酸为催化剂制备了甲基乙烯基MQ硅树脂,并对其工艺条件进行了研究,结果表明,其适宜的制备工艺条件为:催化剂(35～38%盐酸浓盐酸)、去离子水、乙醇的用量分别为1.1%、11%、22%(体积百分数),水解反应时间1 h,反应温度在75℃～80℃之间。
Vinyl-substituted MQ silicone resins were prepared by the cohydrolysis of 1,3-divinyl-1,1,3,3- tetramethyl disiloxane and tetraethyl orthosilicate. The influence factors to the yields of the MQ silicone resin were also studied. The results showed that the preferable process was： the dosage of catalyst, hydrochloric acid with concentration of 35-38 % was 1.1%（volume ratio）. The dosage of de-ionized water and ethanol were 11% and 22 %（volume ratio）, respectively. The reaction time was 1h and the reaction temperature was between 75 and 80℃.
出处
《广州化工》
CAS
2009年第2期114-115,118,共3页
GuangZhou Chemical Industry
关键词
乙烯基
MQ树脂
制备
收率
vinyl-substituted
MQ silicone resin
preparation
yield
