NKC-9催化D_4开环聚合制备高粘度二甲基硅油  

Preparation of high viscosity dimethicone with NKC-9 catalyzed D_4 ring-opening polymerization

作　　者：蔡天瑜 邓建国[2] 周元林[1] 马春彦[2] 纪兰香[2] 白小峰[2] CAI Tianyu;DENG J ianguo;Z HOU Yuanlin;MA Chunyan;J I Lanxiang;BAI Xiaofeng(School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621000,China)

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]中国工程物理研究院化工材料研究所,四川绵阳621000

出　　处：《功能材料》2018年第7期7166-7169,共4页Journal of Functional Materials

基　　金：中国工程物理研究院应用技术开发基金资助项目(JM201606)

摘　　要：报道了采用高活性、低腐蚀性的强酸性阳离子交换树脂(NKC-9)催化八甲基环四硅氧烷(D_4)开环聚合,六甲基二硅氧烷(MM)封端,制备高粘度二甲基硅油的方法。探讨了聚合温度、聚合时间、催化剂量、封端剂用量等因素对聚合反应的影响。研究结果表明,当n(D_4)∶n(MM)=75、催化剂量为7%(质量分数)、聚合温度80℃、聚合时间3.5h时,获得的二甲基硅油产率为88.51%,粘度为23 520mPa·s。Here a convenient method for preparation of high viscosity dimethicone with ring-opening polymerization of octmethylcyclotetrasiloxane（D4）and end-capped with hexamethyldisiloxane（MM）catalyzed with highly active and low corrosive strong acidic cation exchange resin（NKC-9）was explored.The influences of catalyst dosage,polymerization time,polymerization temperature and end-capped reagent on the polymerization were studied.The results exhibited that when n（D4）∶n（MM）=75,catalyst dosage was 7 wt% of the amount of D4,polymerization temperature was 80℃and its time was 3.5 h,the yield of the dimethicone obtained was 88.51%and the viscosity was 23 520 mPa·s.

关 键 词：强酸性阳离子交换树脂 高粘度 二甲基硅油 开环聚合 

分 类 号：TQ314[化学工程—高聚物工业]