PC/改性ABS复合材料的制备与性能  

Preparation and Properties of PC/Modified ABS Composite

作　　者：王雅群 李欣 宋任展 朱坤良 林润雄[1] Wang Yaqun;Li Xin;Song Renzhan;Zhu Kunliang;Lin Runxiong(Qingdao University of Science and Technology,High Performance Polymer Research Institute,Qingdao,Shandong,266045)

机构地区：[1]青岛科技大学高性能聚合物研究院,山东青岛266045

出　　处：《现代塑料加工应用》2023年第3期18-21,共4页Modern Plastics Processing and Applications

摘　　要：在传统的丙烯腈-丁二烯-苯乙烯共聚物(ABS)乳液接枝聚合中加入甲基丙烯酸甲酯(MMA),制得了改性ABS,然后与聚碳酸酯(PC)共混挤出,制得了PC/改性ABS复合材料。研究了MMA用量对PC/改性ABS复合材料的熔体流动速率(MFR)、维卡软化温度、力学性能的影响。结果表明:随着MMA用量的增加,PC/改性ABS复合材料的MFR、拉伸强度、弯曲强度和缺口冲击强度均先升高后降低。当MMA质量分数为20%时,PC/改性ABS复合材料的拉伸强度和弯曲强度均达到最大,分别为48.9 MPa和63.2 MPa;当MMA质量分数为30%时,PC/改性ABS复合材料的缺口冲击强度为41.0 kJ/m^(2);当MMA质量分数不高于30%时,与PC/ABS复合材料相比,PC/改性ABS复合材料的维卡软化温度更高。Modified ABS was prepared by adding methyl methacrylate(MMA)in the traditional lotion graft polymerization of acrylonitrile-butadiene-styrene copolymer(ABS),and then polycarbonate(PC)/modified ABS composite was prepared by blending and extruding with PC.The effects of MMA dosage on the melt flow rate(MFR),Vicat softening temperature and mechanical properties of PC/modified ABS composite were studied.The results show that with the increase of MMA dosage,MFR,tensile strength,bending strength and notch impact strength of PC/modified ABS composite first increase and then decrease.When the mass fraction of MMA is 20%,the tensile strength and bending strength of PC/modified ABS composite reach their maximum values of 48.9 MPa and 63.2 MPa,respectively.When the mass fraction of MMA is 30%,the notch impact strength of PC/modified ABS composite reaches 41.0 kJ/m^(2).When the mass fraction of MMA is not higher than 30%,compared with PC/ABS composite materials,The Vicat softening temperature of PC/modified ABS composite material is higher.

关 键 词：丙烯腈-丁二烯-苯乙烯共聚物 甲基丙烯酸甲酯 接枝 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TQ325.2[化学工程—合成树脂塑料工业]