新型PVC抗冲改性剂AMB  

NEW IMPACT MODIFIER AMB FOR PVC

作　　者：赵永生[1] 王克俭[1] 

机构地区：[1]北京化工大学,北京100029

出　　处：《工程塑料应用》2010年第8期26-28,共3页Engineering Plastics Application

摘　　要：采用丁二烯胶乳制备了橡胶核质量分数为80%的聚氯乙烯(PVC)抗冲改性剂(甲基丙烯酸甲酯/丁二烯/丙烯酸丁酯)三元共聚物(AMB)树脂。并与传统(甲基丙烯酸甲酯/丁二烯/苯乙烯)三元共聚物(MBS)在改性PVC方面进行对比。结果表明,增加核中丁二烯的含量、适当降低交联剂的用量可使PVC/AMB的玻璃化转变温度降低。AMB增韧PVC的转矩流变性能与MBS加工性能基本相近;添加5～12份的AMB对PVC冲击性能的改善最为明显。采用喷雾干燥工艺能够得到流动性更好的规则圆球状AMB颗粒。Methyl methacrylate/butadiene/butyl acrylate（AMB）resin as a new poly（vinyl chloride）（PVC） impact modifier was prepared from a set of components containing 80% butadiene latex,and its modification effect on PVC was compared with normal methyl methacrylate/butadiene/styrene（MBS）.The results showed that the galss transition temperature of PVC/AMB could be decreased 6℃ by increasing the dosage of butadiene in the latex core or by reducing the dosage of crosslinking agent.In torque-mixer testing,AMB toughened PVC exhibited the almost same rheological properties as MBS toughened PVC.The optimum content of AMB in PVC was 5-12 phr for the highest impact strength.SEM presented the regular round shape of AMB particles prepared by spray drying process.

关 键 词：聚氯乙烯 (甲基丙烯酸甲酯/丁二烯/丙烯酸丁酯)三元共聚物 抗冲改性剂 玻璃化转变温度 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]