相容剂及硫化体系对EPDM/LDPE热塑性弹性体性能的影响

采用两种不同硫化体系通过动态硫化工艺制备EPDM/LDPE热塑性弹性体(TPE)，并采用EVA对体系进行相容。结果表明：随着EVA用量的增大，EPDM/LDPE共混物的剪切粘度逐渐减小，加工流动性提高；与硫黄硫化EPDM/LDPE TPE相比，过氧化物硫化EPDM/LDPE TPE的物理性能较差，耐热性能较好；当EVA用量为18份时，EPDM/LDPE TPE的综合性能较好。;EPDM/low density polyethylene(LDPE) thermoplastic elastomer(TPE) was prepared in two curing systems by dynamic vulcanization,with ethylene vinyl acetate(EVA) as compatibilizer.The results showed that,as the addition level of EVA increased,the shear viscosity of EPDM/LDPE blend decreased and the flow properties increased.Compared with sulfur vulcanization system,the physical property of EPDM/LDPE TPE cured with peroxide was poor,but the heat resistance was better.The comprehensive properties of EPDM/LDPE TPE were better when the addition level of EVA was 18 phr