聚氨酯注浆材料阻燃性能的研究-材料学专业毕业论文

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1、AbstractThisstudyinvestigatedthebasisformulationsofpolyurethanegroutingmaterialandflameretardant.Compoundmodifypolyurethanwithsolidflameretardants(melamin、ammoniumpolyphosphate、Br)andliquidflameretardants(DMMP、TCEP).Studyontheroleoftheadditivesandinfuencelawofthemech

2、anicalproperties.Studyontheroleofdifferentflameretardantstomechanicalpropertiesandflameretardancyofflame-retardantpolyurethanegroutingmaterial.Theresultindicatesasfollow：(1)Thebasisformulationsofpolyurethanegroutingmaterialasfollow：isocyanateindexis1.02,watercontentw

3、as0.1%,sanyaethyldiaminecontentwas0.2%,stannoustinwas0.15%,defoamercontentwas0.8%.Thebestmechanicalpropertiescanreach7.456MPaintension,11.640KJm-2inimpact,and17.790MPaincompression.(2)Theflameretardedeffectofunitaryflameretardantonpolyurethanegroutingmaterialwereunco

4、nspicuous,whiletheflameretardancyofpolyurethanegroutingmaterialwereimprovedsignificantlybymultiplexflameretardantforsynergismeffectofflameretardant,theoptimumflameretardantmixratioofBr,DMMPis1:2.(3)MicroscopictypeofmaterialisobservedbySEM.Afterflameretardant,themater

5、ialsurfacecoveredwithadenselayerofcoke.Thecokelayercanpreventfromfurtherburningflame,andimproveperformancetheflame-retardantpolyurethanematerial.(4)Flameretardantaddedcanimprovethethermalstabilit,yaverageburningtimeissharplyreduced.KeyWords：polyurethan；grouting；flame

6、-retardaney；burningtime；mechanicalproperties；retardantmechanism-II-目录摘要...........................................................................................................IAbstract................................................................................

7、............................II引言..........................................................................................................11绪论.............................................................................................................21.1聚氨酯注浆材料简介...

8、.....................................................................21.1.1聚氨酯材料的发展应用现状............................................