空心微珠的疏油改性对泡沫灭火剂发泡性能的影响  

Oleophobic modification of hollow glass microspheres and its influence on the foamability of foamite

作　　者：陈伟红[1] 唐宝华[1] 孙青辉[1] 郑迪莎[1] 

机构地区：[1]中国人民武装警察部队学院消防工程系,河北廊坊065000

出　　处：《化学研究》2013年第2期118-122,共5页Chemical Research

基　　金：中国人民武装警察部队学院基金资助项目(20100009);公安部消防局应用创新计划项目(2012XFCX10)

摘　　要：用1H,1H,2H,2H-(十三氟代辛烷基)三乙氧基硅烷(F8261)对空心微珠(HGM)进行表面改性处理,测定了不同条件下油滴在改性空心微珠(MHGM)表面的接触角及停留时间,考察了改性剂浓度、反应时间和反应温度等因素对改性效果的影响,对比了HGM和MHGM对蛋白泡沫液发泡倍数、25%析液时间等参数变化,研究了MHGM对泡沫灭火剂发泡性能和泡沫稳定性的影响.结果表明,在F8261浓度为1.0%,温度为60℃时,超声2.0h,油滴与MHGM的接触角可达132.5°,疏油性能明显增强,灭火剂的发泡性能和油面稳定性显著改善.1H, 1H, 2H, 2H-Perfluorooctyltriethoxysilane was used as surface modifier to pre- pare oleophobic hollow glass microspheres （MHGM）. Effect of concentrate of 8261 and reac- tion temperature on the oleophobic performance of MHGM were investigated by means of con- tact angle and maintaining time. The expansion ratios and stability of foam on kerosene were examined. The results showed that when the concentration of F8261 is 1.0%, at 60℃ reacting 2 h, the contact angle of kerosene on MHGM is 132.5°. Outstanding improvement in the ex- pansion ratio and stability of foam on oil were achieved through the oleophobic modification.

关 键 词：空心微珠 硅烷偶联剂 接触角 泡沫灭火剂 

分 类 号：O648.2[理学—物理化学]