摘要：本文以含羟基的醇酸中间体、聚醚多元醇N-210、2,2-二羟甲基丙酸、4,4'-二环己基甲烷二异氰酸酯及不同扩链剂（乙二胺、异佛尔酮二胺、二乙烯三胺）为原料，采用预聚法制备了自氧化水性聚氨酯，并重点探讨了扩链剂种类对自氧化水性聚氨酯及其漆膜性能的影响。结果表明：当以异佛尔酮二胺为扩链剂时，所制备的自氧化水性聚氨酯外观更为透明，粒径最小（仅为57.6nm），在50°C下的热储存稳定性高达6个月，在空气中固化14天后，漆膜具有最大的铅笔硬度（2H）和最优异的耐水性（180h）。关键词：自氧化；醇酸树脂；水性聚氨酯；扩链剂；漆膜中图分类号：TQ631.2文献标志码：A文章编号：2096-854X（2022）06－0045-07TheInfluenceofDifferentChainExtendersonAuto-oxidizingWater-bornePpolyurethaneandFilmPropertiesZengQingyuan1，XueShujing1，YouYefeng1，DingYongbo1，2，*，ShenLiang1，2（1.SchoolofChemistryandChemicalEngineering,JiangxiScienceandTechnologyNormalUniversity,Nanchang330013,Jiangxi,P.R.China;2.JiangxiWaterborneCoatingEngineeringLaboratory,Nanchang330013,Jiangxi,P.R.China）Abstract:Inthispaper,hydroxyl-containingalkydintermediate,polyetherpolyolN-210,2,2-dimethylolpropionicacid,4,4'-dicyclohexylmethanediisocyanateanddifferentchainextenders（ethylenediamine,isophoronediamine,diethylenetriamine）wereusedasrawmaterialstoprepareauto-oxidizingwater-bornepolyurethanebyprepolymerizationmethod.Theeffectsofthetypesofchainextendersonthepropertiesofauto-oxidizingwater-bornepolyurethaneandpaintfilmswerealsodiscussed.Theresultsshowthatthepreparedauto-oxidizingwater-bornepolyurethanehasamoretransparentappearance,thesmallestparticlesize（57.6nm）,andthestoragestabilityat50°Creached6monthswhenisophoronediaminewasusedasthechainextender.Theabove-mentionedauto-oxidizingwater-bornepolyurethaneexhibitedthehighestpencilhardness（2H）andthebestwaterresistance（180h）aftercuringinairfor14days.Keywords:Auto-oxidizing;alkydresin;water-bornepolyurethane;chainextender;paintfilm扩链剂种类对自氧化水性聚氨酯及漆膜性能影响研究曾庆元1，薛书静1，尤烨峰1，丁永波1，2，*，申亮1，2（1.江西科技师范大学化学化工学院，江西南昌330013；2.江西省水性涂...
