资源描述：
《常用塑胶材料简介.TXT》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、常用塑胶材料简介.TXT*commonlyused(thermoplastic)plasticsaremainlyinthefollowingtypes:Polystyrene(PS)andmodifiedpolystyrene(HIPS)etcPropylene-butadienestyrenepolymer(ABS)Formaldehyde(POM)Polyethylene(PE)Polypropylene(PP)PVC(PVC)Polycarbonate(PC)Ptolamine(PA)Polymethylmethacrylate(PMMA)*theperfor
2、maneeofplasticandthedesignofthebeerisasfollows:One.Polystyrene(PS)andmodifiedpolystyrene(HIPS)etcPolystyrene(PSorGPPS),commonlyknownas"hardglue，z,isnon-crystallineplasticanditsmainpropertiesareasfollows:Transparency,goodgloss,easycoloring.Solubleinorganicsolvents(acetone,trichloroethyle
3、ne,etc・),whichcanbeusedtosprayoil.Theformingshrinkagerateissmall(about0.4%),andthedimensionalstabilityisgood・Thesurfaceiseasytocleanandtheplasticpartsarehigh・Acidresistance,acid,alcohol,oilestereasystresscracking.Themainpropertiesofmodifiedpolystyrene(HIPS),whichiscalled''non-breakinggl
4、ue",areasfollows:Amoderateamount(5-20%)ofbutadienerubberwasaddedtotheGPSS,whichimprovedtheimpactresistanceofhardglue・Colour:opaqueorslightlyyellow・3.TheHIPSandGPPSaccordingtotheneedcanbemixedplasticbeer,GPPSingredientsmoreproductsshine,thebetter,thebettertheperformanceofthef1ow・Forexamp
5、le:componentsthantheHIPS,GPPS二7:3orspeak,cankeeptheenoughstrengthandgoodqualityofapparent・OthermainpropertiesareGPPS・Otherpropertiesofpolystyreneinelude:1.MBSpolymethacrylate-butadiene-styrenecopolymer;ThetransparentABS.Mainproperties:transparent,goodtoughness,acidandalkaliresistanee,go
6、odliquidity,easytoshapeandcolor,stabledimension.TheSBSstyreneandbutadienepolymeraretheK(commonhaveKR01,KR03)・Mainproperties:transparent,flexible,convenientforforming.ASacrylicsandstyrenepolymers,thesamethingASSAN・Mainproperties:highimpactresistance,goodcorrosionresistance,thelowestliqui
7、dityinthestyrenesystemMaterialcompatibilityisnotgood・Transparent・TheformingprocessofpolystyreneisknownTheGPPSformingtemperaturerangeislarge(theformingtemperatureisfarfromthedegradationtemperature);Theheatingflowandcuringspeedarefast,sotheformingcycleisshort.Speedparameters:thef
