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《常用塑料的品种、主要成分、性格、价格及识别方法的调查研究（a survey of varieties, main components, characters, prices and identification methods of plastics）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、常用塑料的品种、主要成分、性格、价格及识别方法的调查研究（Asurveyofvarieties,maincomponents,characters,pricesandidentificationmethodsofplastics）Asurveyofvarieties,maincomponents,characters,pricesandidentificationmethodsofplasticsFirst,commonplasticvarietiesPolyvinylchloride(PVC)Itisthebrandbuil
2、dinginamaximumamountofplastic.ThedensityoftherigidPVCis1.38~1.43g/cm3,themechanicalstrengthishigh,thechemicalstabilityisgood,andtheservicetemperaturerangeisgenerallybetween-15and+55DEGC,andtheutilitymodelissuitableformanufacturingplasticdoorsandwindows,asewerpipe,aw
3、iregroove,etc..Polyethylene(PE)Thebrandofpolyethyleneplasticinthebuildingismainlyusedforwatersupplyanddrainagepipe,sanitaryware.Polypropylene(PP)Improvingthedensityofpolypropyleneisthesmallestofallplastics,isabout0.90.Polypropyleneisusedtoproducepipes,sanitarywarean
4、dotherbuildingproducts.Polystyrene(PS)Thebrandisacolorlesstransparentglasslikepolystyreneplastics.Polystyreneismainlyusedinbuildingfoaminsulationmaterials,lighttransmissionmaterialsandotherproducts.ABSplasticThebrandisABSplasticmodifiedpolystyreneplastic,withacrylon
5、itrile(A),butadiene(B)andstyrene(S)threecomponentbased.ABSplasticcanbeusedtomakeplasticdecorativeboardswithpressurepatterns.Two,commonlyusedplasticingredientsTheplasticweusuallyuseisnotapuresubstance.Itismadeupofmanymaterials.Thepolymer(orresin)isthemaincomponentofp
6、lastic,inaddition,inordertoimprovetheperformanceofplastics,butalsoaddvariousauxiliarymaterialsinthepolymer,suchasfiller,plasticizer,stabilizer,lubricant,coloringagent,canbecomethegoodperformanceofplastic.1.SyntheticresinSyntheticresinisthemostimportantcomponentofpla
7、stics,anditscontentinplasticsisgenerallybetween40%and100%.Becauseofthelargeamountandthenatureoftheresin,whichoftendeterminesthenatureofplastics,peopleoftenthinkofresinasasynonymforplastics.Forexample,PVCresinismixedwithPVCplastic,phenolicresinandphenolicplastics.Inf
8、act,resinandplasticsaretwodifferentconcepts.Resinisanunprocessedprimitivepolymerthatisusednotonlyinplasticsbutalsoasrawmaterialforpaints,a
