白云母/硅微粉疏水改性对三相泡沫热稳定性的影响  

Influence on thermal stability of three-phase foam by hydrophobic modification of muscovite/silica powder

作　　者：吕科宗 蒋新生[1] 何标[1] 李阳超[1] 

机构地区：[1]后勤工程学院军事供油工程系,重庆401311

出　　处：《中国安全生产科学技术》2017年第4期153-159,共7页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(51574254);"863"计划项目(2012aa7013037);重庆市科技计划项目(CSTC2014yykf B90001);火灾与爆炸安全防护重庆市重点实验室建设项目(CSTC 2010CA0005)

摘　　要：为了制备高热稳定性的三相泡沫,对白云母/硅微粉疏水改性。采用十六烷基三甲氧基硅烷(HTEOS)为改性剂,以接触角、粒度分析、FTIR为表征。在合成蛋白泡沫中按比例添加粉体制备三相泡沫,以自主设计可视化油池进行热稳定性试验并与两相泡沫对比。结果表明:改性白云母的性质为"两亲",改性硅微粉表现为疏水;三相泡沫热稳定性高于两相泡沫,三相泡沫中,利用改性白云母制备的三相泡沫热稳定性最优,覆盖至破灭时间为1 905 s,而改性硅微粉制备的三相泡沫热稳定性不足,覆盖至破灭时间仅为983 s。The muscovite and silica powder were hydrophobic modified to prepare the three-phase foams with high thermal stability. Using Hexadecyltrimethoxysilane（ HTEOS） as modifier,the modified powder was characterized by the contact angle,particle size analysis and FTIR. The three-phase foam was prepared by adding the powder into the synthetic protein foam according to certain ratio,then the thermal stability tests were carried out by using the self-designed visual oil pool and compared with the two-phase foam. The results showed that the modified muscovite presented the amphipathic property,while the modified silica powder presented the hydrophobic property. The thermal stability of three-phase foams was higher than that of two-phase foam. The three-phase foam made by modified muscovite had the best thermal stability in three-phase foams,whose time from cover to extinction was 1905 s. The thermal stability of three-phase foam made by modified silica powder was insufficient,whose time from cover to extinction was only 983 s.

关 键 词：疏水改性 三相泡沫 粉体 热稳定性 

分 类 号：X932[环境科学与工程—安全科学]