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1、Thepolyurethane/polyureamaterialsapplicationintankanti-corrosionandinsulationprojectSWDPolyurethane(Shanghai)Co.,Ltd.A.IntroductionThesprayablepolyurethane/polyurea(Spu/Spua)engineeringmaterialsaredevelopedandpublishedin70sand90sdecadeof20thcentury.Onceitappearsinmarke
2、titsrapidlygrowingupandsuccessfulinanti-corrosion,waterproofandheatinsulationfieldswithhisexcellentphysical-chemicalpropertiesandenvironmentfriendlyandperformancecharacteristics.InChina,thespraypolyurethanerigidfoam(Spuf)isrecommendedasmostadvancedconstructionenergyeff
3、iciencymaterialsbytheNationalConstructionDepartment.TheSpuaisselectedtobeaneweffectivewaterproofandanti-corrosionmaterialappliedintherailwayexpresslineconcretebridgeprotectiveprojectwhichissuperSpuaprojectontheworld.RecentthetotalmarketcapacityinChinareachedto5milliont
4、onsperyearasthe25%oftheworldormore.Intheimportantapplicationachievementthetanksinsulationandanti-corrosionprojectsofpetrochemical,aviation,metallurgyandelectricpowerindustriesaretakenupanoutstandingposition.Themetaltanksanditspipelineandadditivepartsareveryimportantsto
5、rageequipmentofliquidmaterialsinmodernindustry.Itishighenergyconsumingandheavycorrosionandsafetyrequeststrict.Thetankssingleanticorrosionandinsulationplusanticorrosionaretheseindustriesgreatprojectsandmagnifictopicsofenergysavingandenvironmentprotectionalso.Forsingleme
6、taltankanticorrosionproject,exceptcathodicprotectionmethodandetc.,themostpopulartraditionalmethodisinsulationthecorrosionmediumtodirectlycontactwithmetalbodybycoatings.Theeffectivecoatingsareepoxy,polyalkene,acrylicestersandfluorinresins.Allofthesearelimitedinpropertie
7、sandperformance.TocomparewiththecoatingsaboveSpu/Spuaelastomercoatingappearsoutstandingadvantagesasfollow:lThehighfriendlyofenvironment.100%solidcontent.nosolvent,noVOC,highsthength,highdensity.lSuperchemicalresistancewithacid,alkali,salt,seawater,oilandbetterthanthere
8、gularcoatings.lEffectiveperformancecharacteristics,quicklycure,nofalldowninvertically,one16layerreachtothickness.lSup
