VE扩散对辐照交联GO/UHMWPE复合材料生物摩擦学性能的影响  

Effects of Vitamin-E Diffusion on the Tribological Properties of Irradiation Cross-Linked GO/UHMWPE Composite

作　　者：韩基泰 段为朋 HAN Jitai;DUAN Weipeng(Binjiang College,Nanjing University of Information Science&Technology,Wuxi,Jiangsu 214105,China;School of Mechanical Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China)

机构地区：[1]南京信息工程大学滨江学院,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》2021年第6期53-56,108,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)。

摘　　要：利用浸泡的方式将维生素-E(VE)溶液扩散至辐照交联氧化石墨烯/超高相对分子质量聚乙烯(GO/UHMWPE)复合材料,提高其生物摩擦学性能。采用摩擦磨损试验机与三维形貌仪相结合的方式检测了复合材料的磨痕表面微观形貌及表面粗糙度,计算了磨损率并分析了耐磨减摩机理。结果表明,在120℃下,将GO/UHMWPE复合材料在VE中浸泡48 h后,由于VE可以作为摩擦磨损过程中的润滑剂,GO/UHMWPE复合材料的摩擦因数与磨损率均降低,导致试样表面粗糙度降低,出现了"被抛光"的现象;基于γ辐照与添加GO的改性基础,在低于UHMWPE熔点温度的VE中浸泡,能提升UHMWPE复合材料的生物摩擦学性能,这主要是由于,VE浸泡提高了材料的润湿性、形成了润滑膜,因此,VE可作为润滑剂。但是,当UHMWPE复合材料在高于UHMWPE熔点温度的VE中浸泡时,UHMWPE复合材料发生熔融变形,该改性方法有待进一步研究。Liquid Vitamin-E(VE)was diffused to irradiated cross-linked graphene oxide/ultra-high molecular weight polyethylene(GO/UHMWPE)composite by immersion to improve its biotribological properties.The surface morphology and surface roughness of UHMWPE matrix composite were measured by means of tribotester and profilometer instruments.Likewise,the wear rate and wear mechanism were scrutinized in this paper.The results showed that when soaked at 120℃for 48 h,the immersed VE solution could be acted as lubricant in the friction and wear process,and the friction coefficient and wear rate decrease;in addition,the surface roughness of the sample decreases with the phenomenon of‘being polished’;based on the modification basis ofγ-gamma irradiation and introduction of GO,the high temperature VE soaking below the melting point temperature of UHMWPE could further improve its biotribological properties.The main reason for the biotribological properties of UHMWPE matrix composite was that the improved wettability,formed lubricating film and existed lubricant,to a certain extent,increased the performance synthetically.Nevertheless,the melting deformation caused by high temperature VE solution immersed was not feasible and yet to be further explored.

关 键 词：维生素E 浸泡 扩散 生物摩擦学 复合材料 

分 类 号：TQ327.8[化学工程—合成树脂塑料工业] TQ325.12