PVC抗冲改性剂及其研究

Impact Modifiers for PVC and Their Development

综述了我国聚氯乙烯(PVC)抗冲改性剂主要品种的性能、生产情况、市场需求及研究进展,包括聚丙烯酸酯类、氯化聚乙烯、甲基丙烯酸甲酯-丁二烯-苯乙烯三元接枝共聚物、丙烯腈-丁二烯-苯乙烯共聚物、乙烯-乙酸乙烯酯共聚物、乙丙橡胶、纳米级复合粒子等。并从制品的改性效果,如抗冲击性、抗冲强度保持率、耐候性、透明性、加工性、与其他助剂配合等方面综合考虑,认为聚丙烯酸酯类是抗冲改性剂品种中最好的一类。

The properties, production, market and development of main impact modifiers for PVC at home were reviewed. The above metioned impact modifiers included polyacrylates, chloropolyethylene, methyl methacrylate - butadiene - styrene ternary graft copolymer, acronitrile - butadiene - styrene copolymer, ethylene - vinyl acetate copolymer, ethylene- propylene rubber, compounded nanoparticles, etc. The improvement effects in impact, retention of tensile strength, weatherability, transparency, processability, combination with other aids were examined and the result showed that polymethacrylate was the best one among the impact modifiers.