摘要
通过熔融接枝反应,分别在弹性体乙烯/辛烯共聚物(POE)、三元乙丙橡胶(EPDM)、苯乙烯-乙烯-丁二烯-苯乙烯共聚物(SEBS)上成功接枝了甲基丙烯酸环氧丙酯(GMA),制备出SEBS-g-GMA、EPDM-g-GMA、POE-g-GMA,考察了3种弹性体对聚对苯二甲酸乙二醇酯(PET)的增韧效果。结果表明:熔融接枝GMA后,在弹性体与PET之间引入了化学反应,明显减小了三种弹性体在PET中的分散相尺寸,降低了共混物的熔体质量流动速率,增加了PET与弹性体间的相容性。SEBS-g-GMA不能有效增韧PET,而POE-g-GMA与EPDM-g-GMA是PET的有效增韧剂。
Three different elastomers, SEBS-g-GMA, EPDM-g-GMA, POE-g-GMA, which were grafted with glycidyl methacrylate （GMA） by twin-screw extruder through reactive blending, were used as modifiers to toughen poly （ ethylene terephthalate ） （PET）. The results showed after melting blended with GMA, a chemical reaction was in the elastomer and PET which decreased the disperse phase of the elastomers in PET. The melt flow rate of blends was decreased; the interfacial tension between the PET and elastomer was improved. The mechanical properties showed that SEBS-g-GMA was ineffective in toughening PET. But POE-g-GMA and EPDM-g-GMA were effective in toughening PET.
出处
《塑料工业》
CAS
CSCD
北大核心
2013年第7期22-26,共5页
China Plastics Industry
