PEEK复合材料的设计及其摩擦学性能.pdf

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1、仿生多孔润滑耐磨cF／PTFE／PEEK复合材料的设计及其摩擦学性能45仿生多孑L润滑耐磨CF／PTFE／PEEK复合材料的设计及其摩擦学性能BiomimeticDesignandTribologicalPropertiesofPorousLubricatingWear—resistanceCF／PTFE／PEEKComposite汪怀远，林珊，张帅，杨淑慧，朱艳吉(东北石油大学化学化工学院，黑龙江大庆163318)WANGHuai—yuan，LINShan，ZHANGShuai，YANGShu-hui，ZHUYan-ji(CollegeofChemistry

2、andChemicalEngineering，NortheastPetroleumUniversity，Daqing163318，Heilongjiang，China)摘要：采用模压一滤取和高温真空熔渍工艺制备了自身发汗式润滑耐磨多孔CF／PTFE／PEEK复合材料。考察了造孔剂(Nac1)、PTFE的含量及炭纤维层间间距对多孔PEEK复合材料结构和摩擦学性能的影响。结果表明，当PTFE含量为2O(质量分数，下同)、NaC1为3O、炭纤维层问间距为0．4mm所得多孔CF／PTFE／PEEK复合材料摩擦因数和磨损率最低，200N下摩擦因数、磨损率分别为0．019

3、2，3．47×10rn。／Nm，较经典CF／PEEK复合材料摩擦因数降低了9倍，耐磨性提高了25倍。原因在于复合材料中PTFE能形成连续的转移膜，降低了材料摩擦因数；NaC1形成的多孑L结构能储存住一定润滑油脂，摩擦过程中在载荷和温度的作用下能形成稳定润滑油膜，明显降低了材料磨损量；炭纤维布起到支撑骨架作用，并协同PTFE，NaCI提高多孔PEEK复合材料摩擦磨损性能。关键词：聚醚醚酮；炭纤维布；多孔复合材料；发汗润滑；摩擦磨损doi：10．11868／j．issn．1001—4381．2014．06．009中图分类号：TQ327文献标识码：A文章编号：100

4、1—4381(2014)06—0045—06Abstract：Usingmolded—leachingandhightemperaturevacuummeltingtechnologies，theself—sweatinglubricationwear—resistanceporousCF／PTFE／PEEKcompositeswereprepared．Theeffectsofporo—gen(NaC1)．PTFEcontentandthedistancebetweeneachoftwoCFlayersonporousPEEKcompos—itemateria

5、lstructureandtribologicalbehaviorwereinvestigated．TheresultsshowthattheporousCF／PTFE／PEEKcompositemateria1contains2O(massfraction，thesamebelow)PTFE，30％NaC1andthedistancebetweentwoCFlayersof0．4mmhasthelowestfrictioncoefficientandwearrate．Whenloadis200N，comparingwithclassicCF／PEEKcomp

6、osites，thefrictioncoefficientoftheporousCF／PTFE／PEEKcompositedecreases9timesandwearresistanceincreasedby25times．PT—FEintheporouscompositescanformcontinuoustransferfilmswhichreducethefrictioncoefficient，andtheporousstructurecanstorecertainlubricantgreasewhichresultsinstablelubricatin

7、goilfilmduringsliding．Thereby，abovementionedadvantagessignificantlyreducethefrictionandwearrateofporoussweatingcomposite．Inaddition，thecarbonfiberclothshowstheroleofskeletonsupportingeffect，andalsocooperatingwithPTFE。NaCltoimprovethewearresistanceofporousPEEKcom—positemateria1．Keywo

8、rds：polyetheretherk