ABS接枝共聚物核壳比对ABS树脂性能的影响  

Effect of Core-shell Ratio of ABS Grafted Copolymer on Performance of ABS Resin

作　　者：李新[1] 赵越 张锐 林新雨 任亮[1] 张明耀[1] 

机构地区：[1]长春工业大学化学工程学院,吉林长春130012 [2]吉林石化合成树脂厂,吉林吉林132021 [3]浙江环宇建设集团有限公司,浙江绍兴312000

出　　处：《塑料科技》2017年第4期65-68,共4页Plastics Science and Technology

摘　　要：采用乳液聚合技术,通过改变聚丁二烯(PB)与共聚单体的投料比合成了一系列不同核壳比的ABS(丙烯腈-丁二烯-苯乙烯)接枝共聚物,将其与SAN树脂熔融共混制备ABS树脂。利用动态力学分析仪(DMA)和扫描电子显微镜(SEM)对ABS树脂的结构与性能进行了表征。结果发现:共混物(ABS树脂)的冲击强度随着接枝共聚物核壳比的增加呈现先增大后减小的趋势,而拉伸强度变化则不明显;橡胶相最大介质损耗因数((tanδ)_(max))的大小取决于接枝共聚物的核壳比;由核壳比为70/30的接枝共聚物制备的共混物表现出明显的韧性断裂特征,这与力学测试的结果相符。A series of ABS（acrylonitrile-butadiene-styrene） grafted copolymers with different coreshell ratio were synthesized by changing the feeding proportion of polybutadiene（PB） and comonomer. And ABS resin was successfully prepared by means of melt blending ABS grafted copolymer with SAN copolymer. The structure and performance of the blends（ABS resin） were investigated by using DMA and SEM. It is found that with the increase of core-shell ratio of ABS grafted copolymer, the Izod impact strength of the blends increases first and then decreases, but the tensile behavior almost unchanges. The（tanδ）_（max） of rubber phase depends on the coreshell ratio of ABS grafted copolymers. The blends prepared by ABS grafted copolymer with 70/30 core-shell ratio fracture in ductile mode, which is consistent with the mechanical test results.

关 键 词：ABS接枝共聚物 核壳比 ABS树脂 性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]