有机硅-醋酸乙烯酯复合乳液的合成  

Synthesis of PHMS/VAc/NMA Composite Emulsion

作　　者：何中为[1] 孙争光[1] 李盛彪[1] 黄世强[1] 

机构地区：[1]湖北大学化学与材料科学学院,武汉430062

出　　处：《有机硅材料》2001年第5期5-7,共3页Silicone Material

摘　　要：用含氢聚硅氧烷与醋酸乙烯酯、羟甲基丙烯酰胺进行共聚 ,制得有机硅 -醋酸乙烯酯复合乳液。讨论了温度对聚合反应转化率的影响 ,并进一步得到了该反应的表观活化能Ea=84 .96kJ/mol ;考察了含氢聚硅氧烷对复合乳液的稳定性、粘度及胶膜性能的影响。结果表明 ,随着反应温度的增加 ,反应的聚合速率和最终转化率都相应增加 ,最佳反应温度为 3 4 6～ 3 5 6K ;随着含氢聚硅氧烷的用量增多 ,复合乳液的粘度增加 ,胶膜的拉伸强度和断裂伸长率呈先增加后下降的趋势。s: A stable hydrogen-containing polymethylsiloxane(PHMS)/Vinyl acetate(VAc)/N-hydroxylmethyl acrylamide(NMA) composite emulsion was prepared.The effect of temperature on polymerization kinetical and the apparent activation energy, E a=84 96 kJ/mol,was obtained. The effect of PHMS amount on the stability,viscosity and film properties of the composite emulsion were discussed in detail. The results showed that we could obtain stable PHMS/VAc/NMA composite emulsion by controlling the temperature and the amount of PHMS ,meanwhile,the emulsion had higher conversion and good film properties .

关 键 词：复合乳液 合成 动力学 含氢聚硅氧烷 乙酸乙烯酯 羟甲基丙烯酰胺 

分 类 号：O631[理学—高分子化学]