氯化原位接枝技术制备改性CPVC的研究  

Synthesis of Modified CPVC by In-situ Chlorinating Graft Method

作　　者：冯莺[1] 张润鑫[1] 孙艳妮[1] 赵季若[1] 秦齐富[1] 

机构地区：[1]青岛科技大学高分子科学与工程学院橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《塑料工业》2006年第6期5-8,共4页China Plastics Industry

基　　金：自然科学基金资助项目(50373042)

摘　　要：采用氯化原位接枝技术制备了改性CPVC,研究了在气固相中氯化接枝的规律,讨论了单体苯乙烯(St)和甲基丙烯酸甲酯(MMA)用量、氯含量以及氯化反应温度对产物性能的影响。结果表明,单体用量为10份左右时,改性CPVC的屈服强度高于CPVC的屈服强度;加入St改性后,氯化反应温度120℃时可得到屈服强度较高的CPVCgSt;在135℃可得到维卡软化点较高的CPVCgSt;单体用量适当,可同时提高改性CPVC的屈服强度和韧性。Modified chlorinated polyvinyl chloride （CPVC） was synthesized by means of in-situ chlorinating graft method （SCGM）. The regularity of SCGM under gas-solid phase was studied, and the effects of the contents of styrene （St） and methyl methacrylate （MMA）, chlorine content and the reaction temperature on the property of the synthetic product were discussed. The results showed when the content of St and MMA were about 10 phr, the yield strength of the modified CPVC was higher than that of unmodified CPVC in the same chlorine content; when St was applied to the modification, the yield strength of the CPVC-g-St was particularly high at the reaction temperature of 120℃, while the vicat softening temperature of the CPVC-g-St was high at the reaction temperature of 135℃. The yield strength and the tenacity were increased simultaneously at the suitable content of the monomer.

关 键 词：氯化原位接枝 化学改性 氯化聚氯乙烯 苯乙烯 甲基丙烯酸甲酯 屈服强度 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]