有机硅乳液的合成最优化研究

Study on the best synthetic method of organo-silicone emulsion

通过研究加料方式、乳化剂类型及用量、搅拌方式、聚合温度、终止反应方法等因素对产品性能的影响 ,并用正交试验进一步优化工艺条件 ;得出八甲基环四硅氧烷 (D4 )后加 ,采用的较好的乳化剂B ,反应前期高温、搅拌剧烈 ,后期低温、搅拌温和 ,低温时终止反应的合成工艺 ,制得有机硅乳液的分子量高、单体转化率高、无“漂油”现象 ,耐寒、耐热。

It is searched that the fact of adding method,emulsifying agent,stirring method, polymerizing temperature and the way to holding polymerizing reaction affects on the properties of the product,then obtains the best syntheses technology.It is obtained that the properties of the product including emulsion stability ,visocsity average molecular weighter and degree of conversion of monomer is good ,under first adding catalyst,emulsifying agent and water,then adding monomer D\-4, employing emulsifying agent B, moreover polymerizing at high temperature and violent stirring in initial stage, polymerizing at low temperature and mild stirring in latter stage.