填料改性充油SEBS／PP共混材料的摩擦学和力学性能研究  

Study on Tribological and Mechanical Properties of Oil-extended SEBS Blends Modified by Fillers

作　　者：梁胜[1] 肖望东[2] 戴文利[1] 

机构地区：[1]湘潭大学高分子科学与工程系,湖南湘潭411105 [2]深圳职业技术学院,广东深圳518055

出　　处：《塑料工业》2009年第4期68-72,共5页China Plastics Industry

基　　金：深圳市科技局项目资助(项目编号07KJbc159)

摘　　要：研究了不同种类填料对充油苯乙烯-乙烯/丁烯-苯乙烯(O-SEBS)聚/丙烯(PP)共混材料摩擦学和力学性能的影响以及滑石粉(Talc)粒径和用量对O-SEBS/PP/Talc体系各项性能的影响。结果表明:填料的加入能有效提高共混物的硬度,降低摩擦因数;在滑石粉用量相同时,滑石粉的粒径越小,材料的综合力学性能和摩擦学性能越优越;随着滑石粉用量的增大,材料的拉伸强度和硬度增大,摩擦因数下降,磨耗量略有上升。共混材料脆断面形貌表明:填料在O-SEBS/PP基体中发生了团聚或附聚现象;磨擦后,O-SEBS/PP磨损表面上有明显的黏着磨损痕迹,加入大量填料后共混材料磨损机制主要表现为磨粒磨损,同时共混材料的磨损性能下降。The effect of different fillers on the tribological and mechanical properties of the oil-extended styrene-ethylene/butylene-styrene （O-SEBS） /polypropylene （PP） blends and the effect of particle size and content of Talc on the properties of O-SEBS/PP/Talc blends were studied. The results indicated that the fillers could effectively improve the hardness of blends and reduce the friction coefficient of blends; by using the same Talc content, the smaller size of the talc, the better results in mechanical and tribological properti.es Of blends. As the content of talc increased, the tensile strength and hardness increased, friction coefficient decreased, and the wear volume increased slightly. The scanning electron microscopy （SEM） photographs in, dicated that the filler particles dispersed unevenly and tended to reunite in O-SEBS/PP system; after friction, the adhesion wear marks could be obviously found on the worn surfaces of the O-SEBS/PP blends, when adding a large content of fillers, the wear mechanisms were converted to abrasive wearing, and the wear properties were declined.

关 键 词：苯乙烯-乙烯/丁烯-苯乙烯共聚物 填料 聚丙烯 摩擦因数 磨耗量 

分 类 号：TQ334[化学工程—橡胶工业]