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2929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目录第一章前言3§1.1尼龙纳米复合材料的介绍3§1.1.1MC尼龙的概念3§1.1