苯乙烯氯化原位接枝改性氯化聚氯乙烯的研究  

STUDY ON STYRENE MODIFYING PVC-C BY IN-SITU CHLORINATED GRAFT METHOD

作　　者：张润鑫[1] 王玉玲[1] 冯莺[1] 赵季若[1] 秦齐富[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,青岛266042

出　　处：《工程塑料应用》2006年第6期5-8,共4页Engineering Plastics Application

基　　金：国家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苯乙烯(St)改性氯化聚氯乙烯(PVCC)。研究了St单体加入量、氯含量对PVCC物理、力学性能及流变性能的影响。结果表明,St的加入量为10份左右时,改性PVCC的拉伸屈服强度达到最大值(69MPa),较未改性PVCC约提高17%,但维卡软化点降低;改性PVCC的拉伸屈服强度和维卡软化点均随氯含量的增加而提高;改性PVCC的熔体粘度较未改性PVCC的低,加工温度范围变宽。Styrene（St） modifying chlorinated polyvinyl chloride（PVC-C） was synthesized by in-situ chlorinated graft method. The influences of chloride content and St adding amount on the physical property, mechanical property and rheological performance of PVC-C were investigated. The results showed that the yield strength in tension of modified PVC-C reached the maximum of 69 MPa, which was 117% higher than that of unmodified PVC-C, but the vicar softening temperature decreased when St amount was about 10 parts ; The yield strength in tension and vicar softening temperature were both increased with the increase of chlorinity. The melt viscosity of modified PVC-C was lower than that of unmodified PVC-C, and modified PVC-C had wider processing temperature.

关 键 词：氯化原位接枝 氯化聚氯乙烯 苯乙烯 化学改性 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业] TQ325.14