熔融挤出工艺对EPDM/PP热塑性弹性体性能影响  

The Influence of Melt Extrusion Process on the Properties of EPDM/PP Thermoplastic Elastomer

作　　者：胡伟 赵颂 王磊[1] 张仕飚 Hu Wei;Zhao Song;Wang Lei;Zhang Shibiao(Hebei Academy of Product Quality Supervision and Inspection,Shijiazhuang 050091,China;College of Material Science and Engineering,Hebei University of Science and Technology,Shijiazhuang050018,China)

机构地区：[1]河北省产品质量监督检验研究院,石家庄050091 [2]河北科技大学材料科学与工程学院,石家庄050018

出　　处：《工程塑料应用》2020年第2期49-52,共4页Engineering Plastics Application

基　　金：河北省科技支撑计划项目(16211246)

摘　　要：研究了在原料配比、加工工艺(硫化温度、螺杆转速)、硫化体系一致的情况下,分别采用熔融挤出一步法和两步法动态硫化制得的三元乙丙橡胶(EPDM)/聚丙烯(PP)热塑性弹性体物理力学性能。实验结果表明,与一步法相比,两步法制得的试样加工流动性较好,熔体流动速率提高1 g/10 min;力学性能较好,拉伸强度、拉伸屈服强度、冲击强度分别增加1.95,2.39,1.55 MPa;交联效果较好,硬度提高2度、压缩永久变形降低3.67%。The physical and mechanical properties of ethylene propylene diene monomer(EPDM)/polypropylene(PP)thermoplastic elastomer prepared by melt extrusion one-step and two-step dynamic vulcanization were studied under the condition that the raw material ratio,processing technology(vulcanization temperature,screw speed)and vulcanization system were completely consistent.The experimental results show that compared with the one-step method,the two-step method has better processing fluidity,the melt mass-flow rate is increased by 1 g/10 min,the mechanical properties are better,the tensile strength,yield strength and impact strength are increased by 1.95 MPa,2.39 MPa and 1.55 MPa respectively,the crosslinking effect is better,the hardness is increased by 2 HA,and the compression permanent deformation is reduced by 3.67%.

关 键 词：三元乙丙橡胶/聚丙烯 热塑性弹性体 熔融挤出 动态硫化 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]