亲水性低黄变氨基改性有机硅乳液的研制

Preparation of new hydrophilic low yellowing amido-modified silicone microemulsion.

采用阴离子乳液聚合法制成有机硅乳液 ;然后加入经酰化剂改性的氨基硅烷偶联剂 ,制成了亲水性低黄变酰化改性氨基改性有机硅乳液 ;讨论了反应温度、反应时间、乳化剂用量、催化剂用量及预乳液滴加时间等条件对有机硅乳液性能的影响。确定出最佳工艺条件为 :反应温度 80℃ ,反应时间 3h ,乳化剂用量 4 % ,十二烷基苯磺酸用量 5 % ,预乳液滴加时间 2h ;酰化改性程度可随实际需要而定。

The hydrophilic low yellowing amido-modified silicone microemulsion was prepared by anion-emulsion polymerization with acidating agent.The emulsion was excellent with small particle diameter,good stability and good result in application.The effects of polymerization temperature and time,content of emulsification,content of catalyzer and the time of pre-emulsification on the performance of the emulsion were discussed.The optimal synthesis conditions were that reaction temperature 80 ℃,reaction time 3 h,content of emulsion 4%,content of dodecyl benzene sulfonic acid 5%,pre-emulsion distribution droplets time 2 h,and the extent of acidate modification was varied to different situations.