PPS1140A1日本宝理Featureapplication---(1)Generalproperties:PPSisakindofwhite,highcrystallinity,hardandbrittlepolymer.TherelativedensityofpurePPSis1.3,butitwillincreaseaftermodification.PPShasavery***allwaterabsorption,generallyonlyabout0.03%.Comparedwithotherplastics,PPSisahighflameretardantmaterial(oxygenindexofpurePVCis47%,PSFis30%,PA66is29%,MPPOis28%,PCis25%).(2)Mechanicalproperties:themechanicalpropertiesofpurePPSarenothigh,especiallytheimpactstrengthisrelativelylow.Theimpactstrengthandtensilestrengthofglassfiberreinforcedcompositesincreasefrom27j/mto76j/Mand6Mpato137mpa,respectively.PPShashighrigidity,whichisrareinengineeringplastics.TheflexuralmodulusofpurePPScanreach3.8GPa,andtheflexuralmodulusofinorganicfilledPPScanreach12.6gpa,whichisincreasedby5times.However,PPOisonly2.55gpaandPCisonly2.1gpa.PPShasgoodcreepresistanceunderload,highhardness,highwearresistance,anditswearlossat1000rpmisonly0.04g,whichwillbefurtherimprovedafterfillingwithF4andmolybdenumdisulfide;PPSalsohascertainself-lubricatingproperty.ThemechanicalpropertiesofPPSarelesssensitivetotemperature.(3)thermalproperties:PPShasexcellentthermalproperties,short-termresistanceto260℃andlong-termuseat200~240℃;itsheatresistanceisequivalenttoPI,secondonlytoF4plastic,whichisrareinthermosettingplastics.(4)Electricalproperties:theelectricalpropertiesofPPSareveryoutstanding.Comparedwithotherengineeringplastics,itsdielectricc***tantanddielectriclosstangentvaluearerelativelylow,anditdoesnotchangemuchinalargerfrequency,temperatureandtemperaturerange;PPShasgoodarcresistance,whichiscomparablewiththermosettingplastics.PPSiscommonlyusedinelectricalinsulationmaterials,itsamountcanaccountforabout30%.(5)Environmentalperformance:oneofthebiggestcharacteristicsofPPSisgoodchemicalcorrosionresistance,itschemicalstabilityissecondonlytoF4;PPSisstabletomostacids,esters,ketones,aldehydes,phenols,aliphatichydrocarb***,aromatichydrocarb***,chlorinatedhydrocarb***,etc.,butnotresistanttochlorinatedbiphenyls,oxidizingacids,oxidants,concentratedsulfuricacid,concentratednitricacid,aquaregia,hydrogenperoxideandsodiumhypochlorite,etc.PPShasgoodradiationresistance.Inaddition,ithasgooddimensionalstabilityandoilresistance.Scopeofapplication(1)Automobileindustry:PPSismainlyusedinautomobilefunctionalparts,igniter,heater,temperaturecontroller,lampholder,bearing,etc.(2)Machineryindustry:usedforshell,structuralparts,wear-resistantpartsandsealingmaterials,includingpumpbody,valve,bearing,bearingbracket,pistonringandgear,etc.(3)Textilefiber:usedforspecialindustrialdustremovalequipment.(4)Film/insulationpaper:usedformotorinsulationmaterials.)