尼龙纳米复合材料的环境性能研究大学论文.doc

河南科技大学毕业论文尼龙纳米复合材料的环境性能研究摘要尼龙纳米复合材料是由MC尼龙添加纳米填料的方式制备而成。MC尼龙作为工程应用很广泛的塑料，与传统的尼龙6相比，它具有合成工艺简单、机械性能优异等优点。它因具有重量轻、强度高、耐磨等多种独特性能而被广泛应用于机械、石油化工及国防工业等领域，但是MC尼龙在摩擦性能方面仍然存在一些不足。本论文即是对MC尼龙的改性研究，以改善其摩擦学性能。在实验过程中通过加入石蜡/膨胀石墨相变复合材料，制备尼龙纳米复合材料。通过磨损试验机测试其在不同线速度、不同材质环的摩擦学性能。结果表明，加入相变复合材料能明显改善MC尼龙的摩擦学性能，磨损程度提高了50%，摩擦因数提高了75%。在环的线速度方面，对于合金钢环,当环的线速度减小一倍，其耐磨性就增加一倍。钢丝环，当环的线速度减小一倍，其耐磨性就增加55%左右。对于油润滑环而言，当环的线速度改变，材料耐磨性能的变化方面表现不明显，相比同线速度的钢丝环摩擦，油润滑表现出的耐磨性能有很大的提高。关键词：尼龙纳米复合材料,MC尼龙，耐磨性，膨胀石墨，相变复合材料STUDYONTHEENVIRONMENTPERFORMANCEOFNYLONNANOMETERCOMPOSITESABSTRACTNylonnanometercompositematerialispreparedbythewayofaddingnanometerfillersbyMCnylon.MCnyloniswidelyusedasaplasticengineering,comparedwiththetraditionalnylon6.Ithastheadvantagesofsimplesynthesisprocess,excellentmechanicalproperties,etc.Itbecauseofitslightweight,highstrength,wearandmanyotheruniquepropertiesandiswidelyusedinmachinery,petroleumchemicalindustryanddefenseindustryandotherfields,butMCnyloninwear-resistingpropertiesstillexistsomeproblems.ThisthesisistostudythemodificationofMCnyloninordertoimproveitswear-resistingproperties.Intheprocessoftheexperiment,thenylonnanometercompositeswerepreparedbytheadditionofparaffin/expandedgraphitephasechangecomposites.Thewear-resistingpropertiesofdifferentmaterialringsweretestedbyweartestingmachine,andthehardnessofthematerialwastestedwiththehardnesstester.Theresultsshowthataddingcompositephasechangematerialscansignificantlyimprovethewear-resistingpropertiesofMCnylon,increasedwearof50%frictioncoefficientincreases75%.Intermsofthelinearvelocityofthering,foralloysteelring,whenthelooplinevelocitydecreasesatimes,itswearresistanceincreasesonetimes.Wirering,whentheringspeedofthewireisreduced,thewearresistancewillincreasebyabout55%.Foroilyslipring,ringlinespeedchanges,changesintheresistanceofthematerialsisnotobviousanditswearresistanceinrelativelygoodstate.KEYWORDS:Nylonnanometercompositematerial，MCnylon,wear-resistingproperty,expandedgraphite,phasechangematerial目录TOC\o"1-3"\h\z\uHYPERLI