期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
P(BA-EHA)/PDCPA/PVC改性剂的合成与共混改性聚氯乙烯研究
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1. 河北工业大学高分子科学与工程研究所, 天津 300130;
2. 河北省能源研究所, 河北石家庄 050081;
3. 河北科技大学化学与制药工程学院, 河北石家庄 050018 -
DOI：
Synthesis of [P(BA-EHA)/PDCPA]/PVC Composites and Study of Its Modifying PVC by Blending Method
摘要/Abstract
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(BAEHA)/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.