耐磨耐高温聚苯硫醚复合涂层的分析

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1、ABSTRACTInthispaper，thepolyphenylenesulfidewasthebasicalfilmfoemation，inwhichthetwokindsofadditionsystemswerethecopperoxideproducedbyin-situreactionandthellano-CaC03modifiedbyorganic．Thepolyphenylenesulfidecoatingwithhightemperatureresistantandwear-resistingWasoptimizedb

2、ythedifferentformula,coatingtechnicsandperformancetesting．Theeffectsofdifferentmetalsurfacetreatmentmethods，Ti02contents，curingtimeandcuringtemperatureonthebondingstrengthofthebottomlayerwereinvestigated．Theaddition’Scompositioninthecoatingandcrystallinityofthecoatingwer

3、eanalyzedbyXRD．ThevariationofmoleculargroupsafterPPSbeencross—linkingedwereanalyzedbyFIRandthecross-linkingmechanismwasanalyzedwhenthecoatingWassolidified．ThethermostabilityandheatdecomposedtemperatureofthecoatingwasanalyzedbyDTA．ThetribologicalpropertyofthecoatingWastes

4、tedunderdryfrictionconditionandwaterlubricationcondition．ThefrictionandwearmechanismwasanalyzedbySEM．Themainconclusionsareasfollows：(1)Coatingandsubstratewerecombinedstronglywhenthesubbingwasfilled、)~，i也15wt．％Ti02andmetalsubstratesurfaceWasacid-washedandsilanetreated．The

5、adhesivestrengthis42MPa．(2)XRDanalysisshowedthatdiffractionmaximumofthecoatingwassignificantlowerafterthecoatinghadbeencross—linked，solidifiedandquenchedandPPSWastransformedintonon-crystallizablepolymer．ThecrystallinitydecreasementofPPScoatingisadvantagesfortheenhancemen

6、tofitstoughness．-(3)FIRanalysisshowedthatthemajorstructureofmolecularchaininthecuringPPSWasnotchanged．ThesulfuratomWasoxidized，includingmat—s-一Wasoxidizedinto—SO—or—S02一．111ecrosslinkagebetweenthecoatingwasmainlyinthebenzenering，ofwhichhydrogenatomWasoxidizedintoaryloxid

7、e．(4)Thein—situreactionisrunbetweenCuS04andNaOH，whoseproductisCu(OHhintheinvestmentprecoat．Cu(OH)2isthendehydratedtoproduceCuO，whichrealizedthehomodisperseofinorganicparticlesintheemulsion．XRDatlasshowedthein—situreactionproductisCuO．(5)ThetribologicalperformanceofCuO／PP

8、S／PTFEcompositecoatingwasapparentlybetterthanpurePPScoating．Thefrictioncoefficientwasdecreasedwiththein