共混参数对废旧胶粉/聚丙烯热塑性弹性体性能的影响  

Effect of Blending Parameters on Properties of Ground Rubber Powder/Polypropylene Thermoplastic Elastomer

作　　者：李培军[1] 赵鑫[1] 毕薇娜[1] 赵树高[1] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042

出　　处：《塑料工业》2016年第2期104-107,140,共5页China Plastics Industry

基　　金：山东省优秀中青年科学家科研奖励基金(No:BS2013CL026)

摘　　要：研究了共混参如数转子转速、共混时间和共混温度对由过氧化物原位增容的胶粉（RP）/聚丙烯（PP）共混物混炼特性和力学性能的影响,并采用扫描电子显微镜观察了RP/PP共混物的微观结构.结果表明,RP/PP共混物的最佳共混物参数为：共混温度160℃,共混时间7-9 min,转子转速50-70 r/min.在此条件下RP/PP共混物的相容性好,力学性能高,其中拉伸强度高于15 MPa,断裂伸长率超过180％,可以作为热塑性弹性体使用.The effect of blending parameters including rotor speed, blending time and blending temperature on the mixing characteristics and mechanic properties of the ground rubber powder （RP）/ polypropylene （PP） blends which was in-situ compatibilized by peroxide, the microstructure of RP/PP blend was also observed by scanning electric microscope. The results show that the optimized blending parameters are as follows： blending temperature is 160 ℃, blending time is 5 -7 min and rotor speed is 50 -70 r/min. The RP/PP blend prepared under these conditions has good compatibility and high mechanical properties with the tensile strength higher than 15 MPa and elongation at break higher than 180% , which means that it can be used as thermoplastic elastomer.

关 键 词：胶粉 聚丙烯 原位增容 共混参数 热塑性弹性体 力学性能 

分 类 号：TQ334[化学工程—橡胶工业]