欢迎来到天天文库
浏览记录
ID:52358003
大小:662.98 KB
页数:5页
时间:2020-03-26
《成型方法对PE-UHMW摩擦磨损性能的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第44卷,第2期工程塑料应用Vo1.44,Nol2一一732016年2月ENGINEERINGPLASTICSAPPLICATIoNFeb.2O16doi:lO.3969/j.issn.1001-3539.2016.02.014成型方法对PE.UHMW摩擦磨损性能的影响王仕仙,张仲(1.武汉工程大学邮电与信息工程学院,武汉430073;2.武钢集团鄂城钢铁有限公司,湖北鄂州436000)摘要:采用对比试验的方法分别对模压成型法、机筒成型法制备的超高分子量聚乙烯(PE.UHMW)进行摩擦磨损性能研究。结果表明,采用机筒成型的PE—UHMW试样的磨合期较短,稳定区间摩擦系数为
2、模压成型PE—UHMW试样摩擦系数的62.4%,机筒成型的PE—UHMW试样在载荷、转速变化的条件下摩擦系数表现更稳定;磨损量都呈现先快速增大后缓慢上升再快速增大的趋势,试验60rain后,模压成型PE—UHMW试样的磨损量为1.4mg,机筒成型试样的磨损量为1.2mg,机筒成型PE—UHMW试样的耐磨性能优于模压成型PE—UHMW试样;对试样摩擦磨损试验后的表面形貌的SEM分析表明,模压成型的PE.UHMW试样的摩擦机理主要为粘着磨损和疲劳磨损;机筒成型的PE—UHMW试样的摩擦机理以磨粒磨损和疲劳磨损为主,后期转化为粘着磨损。机筒成型的PE.UHMW试样摩擦磨损过程中
3、的磨粒起到自润滑及减摩剂的作用,其热力学及力学性能优于模压成型的PE.UHMW试样。关键词:挤出成型;模压成型;超高分子量聚乙烯;摩擦磨损性能;干摩擦中图分类号:TQ325.12文献标识码:A文章编号:1001.3539(2016)02.0073.05EffectsofFormingMethodsonFrictionandWearPerformancesofPE—UHMWWangShixian,ZhangZhong(1.CollegeofPostandTelecommunicateofWuhanInstituteofTechnology,Wuhan430073,China
4、;2.WiscoGroupEChengIronandSteelCo.,Ltd.,Ezhou436000,China)Abstract:Adoptedcontrasttestmethod,thefrictionandwearperformancesofultrahighmolecularweightpolyethylene(PE—UHMW)formingfromthecompressionmoldingandthebarrelmoldingwerestudied.TheresultsshowthattherunningperiodofthePE—UHMWpipeformin
5、gfromthebarrelmoldingisrelativelyshort.thestablefrictioncoeficientis62.4%ofthatformingfromcompressionmolding,andthefrictioncoeficientismorestableundertheconditionoftheloadandthe~peedchange.Dryfrictionwearlossispresentedatrendfromrapidincreaseatfirsttoslowlyrisingthentorapidincreaseagain.A
6、fter60min,thewearlossofsampleformingfromcompressionmoldingis1.4mg,andthewearlossofsampleformingfromthebarelmoldingis1.2mg,thefrictionandwearperformanceofsampleformingfromthebarrelmoldingisbetterthanoneformingfromthecompressionmolding.SEManalysisofthemorphologyofthefrictionandwornsurfacesa
7、fterweartestsshowsthatthefrictionmechanismofPE—UHMWformingfromthecompressionmoldingismainlyadhesivewearandfatiguewear,andthefrictionmechanismofPE-UHMWformingfrombarrelmoldingismainlyabrasivewearandfatiguewear,butlatethemechanismchangeintoadhesivewear.InPE—UHMWfricti
此文档下载收益归作者所有