P(BA-EHA)/PDCPA/PVC改性剂的合成与共混改性聚氯乙烯研究  

Synthesis of [P(BA-EHA)/PDCPA]/PVC Composites and Study of Its Modifying PVC by Blending Method

作　　者：邢胜男[1] 潘明旺[1] 张晓蕾[1] 李景生[2] 

机构地区：[1]河北工业大学高分子科学与工程研究所,天津300130 [2]河北科技大学化学与制药工程学院,河北石家庄050018

出　　处：《河北师范大学学报（自然科学版）》2007年第1期77-80,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金(B2006000014);河北省教育厅自然科学研究项目(2004420)

摘　　要：采用传统的乳液聚合通过2步法合成了交联型核壳聚丙烯酸酯乳液,以其作为种子,进行氯乙烯乳液接枝聚合反应,得到了聚丙烯酸酯/聚氯乙烯复合粒子改性剂.通过粒径分析仪、透射电镜、扫描电镜等手段对复合粒子及其共混PVC材料进行了测试与表征.结果表明:复合粒子具有较清楚的核壳结构,粒径大小均匀;当复合粒子中共聚单体丙烯酸双环戊烯基酯(DCPA)用量为5%、橡胶含量为3%时,改性PVC材料缺口冲击强度达最大值,是纯PVC的2.7倍.维卡软化点温度也有所提高,材料显示出良好的韧性.A kind of crosslinked core-shell polyacrylate latices （ [ P （BA- EHA）/PDCPA] ）, PDCPA being polydicyclic-pentenyl acrylate, was synthesized by conventional two-step seeded emulsion copolymerization. In the presence of the [ P （BA-EHA）/PDCPA] latices, the [ P （BA-EHA）/PDCPA]/PVC latices, were prepared by grafting vinyl chloride copolymerization in an autoclave. TEM study indicated that the P（BA-EHA）/PDCPA]/ PVC composite particles had a regular core-shell structure, and the particle diameters of the composite latices were near. When adding amount of the [ P（BA-EHA）/PDCPA]/PVC with 50/50 core-shell ratio was 6 parts for the synthesis of the [P（BA-EHA）/PDCPA] with 5 % of DCPA, the notched impact strength of the blending material was 2.7 times that of PVC. SEM graph showed that the fractured surface of the composite sample exhibited better toughness of the material.

关 键 词：复合粒子 DCPA 氯乙烯接枝 聚氯乙烯改性 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]