磺酸树脂催化制备低黏度二甲基硅油  

Preparation of Low Viscosity Polysiloxane by Sulfonic Acid Resin Catalyst

作　　者：谭景林[1] 刘萍[1] 李强 

机构地区：[1]九江学院化学与环境工程学院江西省生态化工工程技术研究中心,江西九江332005 [2]九江宇仁新材料有限公司,江西九江332005

出　　处：《有机硅材料》2017年第3期151-153,共3页Silicone Material

摘　　要：以八甲基环四硅氧烷、六甲基二硅氧烷为原料,磺酸树脂为催化剂制备了低黏度二甲基硅油,并对产品进行了FT-IR表征。初步探讨了反应温度、反应时间、投料比等对二甲基硅油黏度的影响。结果表明:以质量分数2%的磺酸树脂为催化剂,八甲基环四硅氧烷与六甲基二硅氧烷的量之比14∶1,120℃反应8 h可制备出低黏度(约50 mm^2/s)二甲基硅油,且催化剂可重复利用。Polydimethylsiloxane with low viscosity were prepared with octamethylcyclotetrasiloxane and hexamethyldisiloxane by sulfonic acid resin as the catalyst, which was characterized by FT-IR. The effects of the reaction temperature, reaction time, feed ratio, on the viscosity of polydimethylsiloxane were investigated. Results show that low viscosity polysiloxane （50 mm2/s） can be prepared by polymerization reaction at 120℃ for 8 h, introducing sulfonic acid resin （2%）, which can be repeatedly utilized.

关 键 词：二甲基硅油 磺酸树脂 低黏度 

分 类 号：TQ324.21[化学工程—合成树脂塑料工业]