聚胺酯彈性體之設(shè)計(jì)及應(yīng)用課件

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1、高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005聚胺酯(PU)彈性體之設(shè)計(jì)及應(yīng)用施文昌OutlineIntroductionClassificationofPUelastomersSynthesisandCharacterizationofPUelastomersApplicationofofPUelastomersQuestionsanddiscussions高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所T

2、imshih/Aug.18,2005WhatisaPolyurethane?Oneofthemostversatilepolymerseverinvented.Itcanbemadeasasoftorrigidfoamorasoftorhardelastomericstrongplastic.Bychangingthechemistryainfiniterangeofmaterialscanbemade.高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005IsocyanatePolyolUrethanegr

3、oupsWhatisaPolyurethane?高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005WhatarePUelastomers?Abroadfamilyofrubber-likecondensationpolymersgenerallycomposedof:AhighmolecularweighthydroxylterminatedpolyolAlowmolecularweightdiolordiaminechainextenderorcurativeApolyisocyanateCatalys

4、ts,additives,etc.高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005PU樹脂由於具有不相容的軟段（SoftSegment）及硬段（HardSegment），產(chǎn)生相分離，導(dǎo)致硬段在PU結(jié)構(gòu)中呈現(xiàn)類似海島的結(jié)晶相，使PU在室溫下有物理交聯(lián)（即假性交聯(lián)）的現(xiàn)象，因此PU分子量雖僅有數(shù)萬，但由於相分離所產(chǎn)生的物理交聯(lián)，使得其機(jī)械性質(zhì)十分優(yōu)異。WhatarePUelastomers?高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005UniqueofPUelas

5、tomersHardnessofPUelastomersfromshore000toshoreD-80PUelastomers高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005Flexible/RigidFoamSlabstockLaminatedMoldedRIMSprayElastomersTPUCastRIMSprayFiberMillableACSAdhesiveCoatingHotMeltSealantUrethane/UreaChemical高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所

6、Timshih/Aug.18,2005ThedefinitionofPUelastomersThermoplasticpolyurethanes---Availableasgranulesorpelletssuitableforconventionalthermoplasticprocessingsuchasextrusion,calendaringorinjectionmoulding.Castelastomers---Madebylow-pressuremixingandcastingtheliquidcomponentsintoamoul

7、dtoformasolidarticlewithtypicalapplicationsbeinghighperformanceindustrialwheels,seals,rolls…etc.RIMelastomers---Producedbyhigh-pressuremixingandinjectionintoaclosedmouldwithtypicalapplicationsasautomotivebumperfascias,bodypanelsplusbodycomponentsforavarietyofothervehicles.Th

8、edefinitionofPUelastomers高分子彈性體研討會(huì)勤益技術(shù)學(xué)院/材料與化學(xué)工程研究所Timshih/Aug.18,2005Spray