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1、高分子材料工程专业英语(2)李文材料科学与工程学院高分子材料系2014年11月25日,第二周ContentsUnit23PolymerProcessingArticleInterpretationGlasswaresandToolsintheLabPrefixandSuffixinPolymerScienceNomenclatureofInorganicandOrganicCompoundsUnit23PolymerProcessing1stParagraphPolymerprocessing,initsmostgeneralcontext,involvesthetransfor
2、mationofasolid(sometimesliquid)polymericresin,whichisinarandomform(e.g.powder,pellets,beads),toasolidplasticsproductofspecifiedshape,dimensions,andproperties.Thisisachievedbymeansofatransformationprocess:extrusion,molding,calendering,coating,thermoforming,etc.Theprocess,inordertoachievetheaboveob
3、jective,usuallyinvolvesthefollowingoperations:solidtransport,compression,heating,melting,mixing,shaping,cooling,solidification,andfinishing.Obviously,theseoperationsdonotnecessarilyoccurinsequence,andmanyofthemtakeplacesimultaneously.在其最一般的情况下,聚合物加工涉及固体(有时侯是液体)聚合物树脂以一种不规则的形式(例如粉末、颗粒、珠子)转化成一种具有特殊形
4、状、尺寸和性能的固体塑料产品。这借助于转换加工:挤出、模塑、压延、涂敷、热成型等。为了实现上述目的,加工过程通常包含下述操作:固体输送、压缩、加热、熔融、混合、成型、冷却、固化并完成。显然,这些操作不必按序发生,许多操作可以同时发生。thermoformingthermometerthermoresponsiveUnit23PolymerProcessing1.Initsmostgeneralcontext:在其最一般的情况下Generally,ingeneral,normally,basicallye.g.Generally,itisnotdifficultforgraduatestu
5、denttorunthisreaction.2.Achieve得到,实现,成功,如愿以偿e.g.Therearemanywhowillworkhardtoachievethesegoals.Puremacromonomercouldbeachievedafterrunningsilicachromatographfortwotimes.Unit23PolymerProcessing2ndParagraphShapingisrequiredinordertoimparttothematerialthedesiredgeometryanddimensions.Itinvolvescombin
6、ationsofviscoelasticdeformationsandheattransfer,whicharegenerallyassociatedwithsolidificationoftheproductfromthemelt.成型是为了给予材料所需要的几何形状和尺寸,它包括粘弹形变和热传递,这种粘弹形变和热传递一般是和产品从熔体的固化相联系的。Beassociatedwith…和……联系在一起;与……有关Abnormalresultsarelikelyassociatedwithsomethinginteresting.,which…引出一个非限定的定语从句Imadealigan
7、dwhichisprettyclean.我合成了一个非常纯的配体。(配体不止一个)Imadealigand,whichisprettyclean.我合成了一个配体,它非常纯。(只有一个配体)Freshinitiatorwasaddedintheflask,whichwasthenreadyforpolymerization.Unit23PolymerProcessing3rdParagraphShapingincludes:(1)t