无机化合物物改性UHMWPE干摩擦行为研究  

Study on Tribological Behaviors of UHMWPE Modified with Inorganic Compounds

作　　者：吴莉[1] 高新蕾[2] 程忠[2] 

机构地区：[1]武汉工程大学化学与环境工程学院,绿色化工过程省部共建教育部重点实验室,湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430073 [2]武汉轻工大学化学与环境工程学院

出　　处：《润滑与密封》2014年第9期36-39,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(51075309);湖北省自然科学基金重点项目(杰出青年人才)(2010CDA086)

摘　　要：采用16种无机化合物对UHMWPE进行改性,在载荷98 N、转速60.18 mm/s、运动半径0.5 cm和干摩擦条件下,在UMT-3型微摩擦试验机上,测定纯UHMWPE及改性UHMWPE与不锈钢球(3 mm 100Cr6钢球)对摩60 min时摩擦因数的变化,测定其磨痕宽度和深度,并对磨损表面进行XRD分析。结果发现:10%和5%二硫化钨、15%氧化锆及5%氮化铝改性UHMWPE的平均摩擦因数较小,它们适于干摩擦条件下与钢配副;5%硫化银、10%氧化铝及15%氮化硅改性UHMWPE的磨痕宽度和深度明显较纯UHMWPE的小,其磨损面和未磨损面的XRD分析结果一致,说明在轻微磨损过程中并未发生晶型改变。UHMWPE was modified with 16 inorganic compounds as additives.Friction coefficient of pure and modified UHMWPE was investigated by an UMT-3 microtribometer against a3 mm 100Cr6 steel ball which was the upper counter-mating specimen,under load of 98 N,with rotation rate of 60.18 mm/s and rotating radius of 0.5 cm for 60 min in dry friction,respectively.Width and depth of wear scars were determined and the analysis of XRD of worn surfaces wais also observed.Results show that average friction coefficient of modified UHMWPE with 5% and 10% WS2 ,15% ZrO2 and 5% AlN are less,and they are suitable for dry friction condition and steel pairs.Width and depth of wear scars,friction of modified UHMWPE with 5% Ag2S,10%Al2O3 and 15% N4Si3 are obviously less than that of pure UHMWPE,their XRD patterns between worn and unworn surfaces are same,and it is suggested that their crystal types are not altered dur-ing minor wear process.

关 键 词：超高分子量聚乙烯 无机化合物 改性 干摩擦 

分 类 号：TH117.1[机械工程—机械设计及理论]