气相法纳米白炭黑的表面疏水改性  

Hydrophobic surface modification of fumed nano-silica

作　　者：王光芳[1] 于波[2] 孙德[1] 李然[1] 

机构地区：[1]长春工业大学化学工程学院,吉林长春130012 [2]长春中医药大学药学院,吉林长春130117

出　　处：《橡胶工业》2010年第11期664-667,共4页China Rubber Industry

基　　金：吉林省教育厅自然科学基金资助项目[(2008)105];长春工业大学科学研究发展基金资助项目(2008A12)

摘　　要：以六甲基二硅氮烷为主表面处理剂,二甲基二乙氧基硅烷为助处理剂,研究不同溶剂、反应温度和时间对气相法白炭黑表面疏水改性效果的影响,并对比研究未改性白炭黑和改性白炭黑对硅橡胶复合膜分离因子的影响。结果表明,以甲苯为溶剂、反应温度为110℃、反应时间为90min时白炭黑的改性效果较好;改性白炭黑/硅橡胶复合膜的分离因子较未改性白炭黑/硅橡胶复合膜高。Using hexamethyldisiazane as main surface modifier,and dimethyldiethoxysilane as co-modifier,the effects of different solvents,modification temperature and reaction time on the surface hydrophobicity of fumed silica were investigated,and the influence of modified silica and unmodified silica on the separation factor of silicone rubber film was studied.The results showed that the optimized modification condition was using toluene as solvent at 110 ℃ for 90 min;and the separation factor of modified silica/silicone rubber film was higher than that unmodified silica/silicone rubber film.

关 键 词：气相法白炭黑 表面改性 疏水 溶剂 硅橡胶 分离因子 

分 类 号：TQ127.2[化学工程—无机化工] TQ333.93