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45622SURFACETECHNOLOGY2016062016-01-062016-03-01Received2016-01-06Revised2016-03-011984BiographyWUWen-wen(1984—),Female,Master,Assistantengineer,Researchfocus:coatingtechnology.1,21,21,21,2ABAB18%28%12.5MPa11.3MPa430%422%ABTQ637A1001-3660(2016)06-0022-06DOI10.16490/j.cnki.issn.1001-3660.2016.06.004PreparationandCharacterizationofFlame-retardantSprayPolyureaCoatingWUWen-wen1,2,CUIHong-li1,2,DIAOZhen-feng1,2,YANGChun-jia1,2(1.QingdaoJialianResearchandProductionDivision,MarineChemicalResearchInstitute,Qingdao266071,China;2.StateKeyLaboratoryofMarineCoatings,Qingdao266071,China)ABSTRACT:ObjectiveTopreparetheflame-retardantspraypolyureacoatingwithsimilarperformancewiththespraypo-lyureacoatinginmechanicalproperty,thermalstabilityandsurfaceappearance.MethodsThespraypolyureacoatingwaspre-paredmainlyfromisocyanates(Acomponent),polyetherpolyolsandaminechainexpandingagent(Bcomponent)byhigh-pressureairlessspraying.WeaddedthesolventflameretardantsinAcomponent,andtheinorganicfillertypeflameretar-dantinBcomponent.Themethodtopreparetheflame-retardantspraypolyureacoatingwasthesameasthatofthespraypo-lyureacoating.Limitingoxygenindex(LOI)test,tensilemachineanddifferentialscanningcalorimetry(DSC)weretakentoevaluatetheflameretardantproperty,mechanicalpropertyandthermalstabilityofthespraypolyureacoatingandtheflame-retardantpolyureacoating,respectively.Thetwocoatingswerealsoanalyzedbyscanningelectronmicroscope.Moreover,flameignitionwasemployedtotesttheflameretardantpropertyofthetwocoatingsdirectly.ResultsTheLOIofthecoating45623containingflame-retardantcouldbeincreasedfrom18%to28%,thetensilestrengthwasdecreasedfrom12.5MPato11.3MPa,andtheelongationfrom430%to422%.Althoughthemechanicalstrengthofpolyureaflameretardantcoatingwasdeclined,thedeclineratewasnotverysmallandstillintherangeofuse.Furthermore,theLOIoftheflame-retardantspraypolyureacoatingwaselevated,andthethermalstabilityandthesurfaceappearancewereexcellent.Theflame-retardantpropertyofthecoatingwasgood,whichwasselfextinguishing,generatingnosmokeandnodrippingafterflameignition.ConclusionTheadditionofflame-retardantcouldeffectivelyimprovetheflame-retardantperformance,andwesuccessfullypreparedtheflameretardantspraypolyureacoating.KEYWORDS:flame-retardantspraypolyureacoating;flameretardancy;mechanicalproperty;surfacemorphologyanalysis;thermalstabilityHClHCNCO121:1311.11ABA901~2h(80±4)2h1Tab.1RawmaterialN220N330MDI-100Mn/fn=1254,4'-MDI≥99MDI-50Mn/fn=1252,4'-MDI≥50JefamineT-5000f=3Mn=5000JefamineT-2000f=2Mn=2000HuntsmanEthacure100f=2Mn=178Huntsman24201606B200ANCO13%110BJeffa-mineT-500056.0JeffamineD-200022.9Ethacure10022.11.08ANCO13%97.412.6BJeffamineT-500043.6JeffamineD-200028Ethacure100208.41.0810%5%15%GracoH-xp3Fusion-AP20002500psi60661:1PVC1.5~2.0mm5021.21LOIGB/T24062008100mm×6.5mm×3mm2HG/T38312006TY80003JOELJSM-6390LVSEM4DSCNETZSCH-DSC204F1N230022.1LOIABLOI10%5%10%15%LOILOILOI0%10%LOI10%15%LOI15%LOI15%1LOIFig.1LOIofspraypolyureacoatings2.2212.5MPa430%10%15%LOI10%A456252Fig.2MechanicalpropertyofspraypolyureacoatingsB10%11.3MPa422%HG/T383120062.3LOI10%32.4SEM44a4c3Fig.3Combustiontestofspraypolyureacoatings:a)ordinarycoatingigniting,b)ordinarycoatinglefttheflame,c)flame-retardantcoatingigniting,d)flame-retardantcoatinglefttheflame4bd2.5DSC5190262016064SEMFig.4SEManalysisofspraypolyureacoatings:a)surfaceappearanceofordinarycoating,b)sectionappearanceofordinarycoating,c)surfaceappearanceofflame-retardantcoating,d)sectionappearanceofflame-retardantcoating5DSCFig.5DSCofspraypolyureacoatings31ABLOI10%2[1].[M].:,2005.HUANGWei-bo.SprayPolyureaCoatingsTechnolo-gy[M].Beijing:ChemicalIndustryPress,2005.[2].[M]..:,2012.LIUHou-jun.PolyurethaneCoatingManual[M].SecondEdition.Beijing:ChemicalIndustryPress,2012.[3],.[J].,2009,24(10):23—26.45627WANGBao-zhu,LIUPei-li.DiscussionontheHotIssueofPolyurea[J].ChinaCoatings,2009,24(10):23—26.[4],.[J].,2012(1):11—13.CHENHe-jiang,WANGSong-sen.PerformanceResearchofSprayedPolyureaNewTypeAliphaticChainExtend-er[J].ChinaBuildingWaterproofing,2012(1):11—13.[5],,.[J].,2013,41(4):29—32.LVLi-yun,PANWan-hua,SUNLi-ming.PreparationandCharacterizationofHalogenFreeFlameRetardantTher-moplasticPolyurethane[J].ChinaPlasticsIndustry,2013,41(4):29—32.[6],,,.[J].,2012,27(4):1—4.XUDi,CUIZheng,ZHAOXin,etal.TheReviewandProspectontheHalogen-freeFlame-retardantTechnologyStatusofPolyurethaneinAbroad[J].PolyurethaneIndus-try,2012,27(4):1—4.[7],,,.[J].,2013,27(2):90—94.WANGXue-chuan,WANGLi,QIANGTao-tao,etal.ResearchProgressinFlame-retardantPolyurethane[J].MaterialsReview,2013,27(2):90—94.[8],,,.[J].,2011(13):16—23.ZHANGLing-li,CHENBo-yuan,HUANGHan-yu,etal.PreparationofFlameRetardantPolyureaWaterproofingCoating[J].ChinaBuildingWaterproofing,2011(13):16—23.[9],,,.[J].,2013(16):12—14.WANGXin-feng,LIUZi-kang,LIHong-ying,etal.De-velopmentandApplicationofFlame-retardantSprayPo-lyureaWaterproofCoating[J].ChinaBuildingWater-proofing,2013(16):12—14.[10],,.[J].,2015,30(3):31—34.WANGZi-xiao,WENQing-zhen,ZHUJin-hua.ResearchProgressofHalogen-freeFlame-retardantsinPolyure-thane[J].PolyurethaneIndus