Ni(Ph_2PCH_2PPh_2)_2Cl_2—CuCl催化MMA与PHMS硅氢加成反应的研究  

Study on hydrosilylation of MMA with PHMS catalyzed by Ni-Cu system

作　　者：孙争光[1] 黄光佛[1] 李盛彪[1] 朱杰[1] 彭慧[1] 黄世强[1] 

机构地区：[1]湖北大学化学与材料科学学院,湖北武汉430062

出　　处：《湖北大学学报（自然科学版）》2001年第3期258-260,共3页Journal of Hubei University：Natural Science

基　　金：湖北省科委重点攻关项目 (970 1P0 2 0 3 )

摘　　要：研究了Ni(dpm) 2 Cl2 —CuCl(dpm为Ph2 PCH2 PPh2 )对甲基丙烯酸甲酯 (MMA)与聚氢甲基硅氧烷(PHMS)硅氢加成的催化性能 ,讨论了影响反应的因素 .结果表明 :Ni—Cu催化体系对MMA与PHMS的硅氢加成反应具有一定的催化效果 .硅氢化接枝率可达到 5 0 % .在硅氢加成反应的同时伴随有MMA的热聚合反应发生 .随着催化剂用量的增大 ,反应速率加快 ,接枝率相应增高 ,MMA的热聚合则相应减少 ;随着反应温度的升高 ,反应速率加快 。The catalytic property of Ni-Cu system on hydrosilylation reaction of MMA with PHMS was investigated.The effects of the amount of catalyst,temperature and reaction time on the reaction were discussed.It was found that the system of Ni(dpm) 2Cl 2-CuCl had the catalytic effect on the reaction.The hydrosilylation-grafting ratio obtained was about 50%.During the hydrosilylation reaction,the thermal polymerization of MMA also happened.With increasing the amount of catalyst,the hydrosilylation reaction rate was accelerated,but the thermal polymerization of MMA was decreased.With raising the temperature,the hydrosilylation reaction rate was accelerated,but the thermal polymerization was also increased remarkably.

关 键 词：有机硅高分子 硅氢加成反应 Ni-Cu催化体系 甲基丙烯酸甲酯 聚氢甲基硅氧烷 催化性能 

分 类 号：O634.41[理学—高分子化学] O643.361[理学—化学]