VE扩散对加速老化辐照GO/UHMWPE复合材料生物摩擦学性能的影响  

Effect of VE Diffusion on Bio-Tribological Properties of Accelerated Aging Irradiation GO/UHMWPE Composite

作　　者：韩基泰 段为朋 HAN Jitai;DUAN Weipeng(WuxiUniversity,Wuxi,Jiangsu 214105,China;School of Mechanical Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China)

机构地区：[1]无锡学院,江苏无锡214105 [2]江南大学机械工程学院,江苏无锡214122

出　　处：《塑料》2023年第5期22-26,共5页Plastics

基　　金：南京信息工程大学滨江学院人才启动经费(2020r018);江苏省高等学校基础科学(自然科学)面上项目(21KJB480012);无锡市社会发展科技示范工程项目(N20191008)。

摘　　要：采用热压成型结合低温扩散(120℃)的方法制备了维生素E(VE)-辐照氧化石墨烯/超高分子量聚乙烯(GO/UHMWPE)复合材料,并且,采用加速老化的方法(80℃,21 d)对其进行了进一步处理。利用摩擦磨损试验机和扫描电子显微镜(SEM)等仪器研究了复合材料生物摩擦学性能的变化,计算摩擦因数和磨损率,分析了磨痕表面形貌及减摩耐磨机理。研究结果表明,加速老化处理后,复合材料的摩擦因数和磨损率分别增大了87.4%和99.5%,生物摩擦学性能明显降低;当加速老化处理过程中存在VE时,复合材料的摩擦因数和磨损率分别降低了33.7%和26.4%,生物摩擦学性能得到显著改善;加速老化处理导致复合材料表面出现疲劳磨损和磨粒磨损2种磨损形式,而VE具有明显的减摩作用。Vitamin E(VE)-irradiated graphene oxide/ultra-high molecular weight polyethylene(GO/UHMWPE)composite were prepared by hot pressing and low-temperature diffusion(120℃),and further treated by accelerated aging(80℃,21 d).The effect of VE diffusion on the bio-tribological properties of accelerated aging irradiation GO/UHMWPE composite was studied by means of friction and wear tester and scanning electron microscope(SEM).The friction coefficient was recorded and the wear rate was estimated.Besides,the surface morphology of wear scar was analyzed,and the mechanism of friction reduction and wear resistance were also discussed.The results showed that after accelerated aging treatment,the friction coefficient increased by 87.4%and the wear rate raised by 99.5%respectively,and the bio-tribological properties decreased significantly.Whereas,when VE existed in the accelerated aging process,the friction coefficient and wear rate of the composite decreased by 33.7%and 26.4%,respectively,and the bio-tribological properties were significantly improved.After accelerated aging treatment,fatigue wear and abrasive wear were detected on the composite surface,and VE has obvious antifriction effect.

关 键 词：VE扩散 加速老化 复合材料 生物摩擦学 减摩 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业]