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Study on the Novel Phosphorus-containing Epoxy Resin: Synthesis,Curing Process and Flame-retardant Property  
Study on the Novel Phosphorus-containing Epoxy Resin: Synthesis,Curing Process and Flame-retardant Property
資料類型: PDF文件
關(guān)鍵詞: epo  xy  resin  2-methy-2  5-dio  xo-l  2-oxaphospholane  
flame  retardancy  self-curing  
資料大小: 112K
所屬學(xué)科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
Asathermosettingresinwithgoodcomprehensiveperformance,epoxyresin(EP)iswidelyusedinelectronicindustries.However,theflameretardancyofgeneralEPcannotmeettheneedsforelectronicapplications.Traditionally,methodsofphysicallyblendingflame-retardantadditiveswithEPwerestudiedforobtainingflame-retardantEP.Themajordisadvantagewasthatallflame-retardingadditivesmightbelostinprocessing.Inrecentyears,relatedresearchmainlyfocusedonthephosphorus-containingreactiveflameretardants,throughwhichwecouldchemicallybondtheflameretardantwithphosphorusatomtopolymerchain.Thepermanentattachmentofphosphorusatomstopolymerleadtohighefficiencyinflameretardancycl].Inthisstudy,areagent2-methy-2,5-dioxo-l,2-oxaphospholane(OP)wereintroducedintoEPsystemasareactiveflameretardant.ThebestcuringtemperaturesofEPsystemsandglasstransitiontemperatures(Tg)ofcuredEPwerealldeterminedbyDSC(TAQ20).Thelimitoxygenindexes(LOI)weredeterminedaccordingtoGB/T2406-1993andverticalcombustiontestingswereconductedaccordingtoGB/T2408-1996.Inourresearch,OPplayedagoodflameretardanteffectontheEP/DDMsystem.TheLOIreached24.2%andUL-94gradereachedV-OlevelwiththemolarratioI:Iofepoxyandacidanhydridegroupsc2].ThroughthereactioninasystemofOP/m-dihydroxybenzene(orp-dihydroxybenzene)/EP,apre-polymerwasobtained.Thephosphorus-containingEPpre-polymerhadtheabilityofself-curing.ThecuredEPhadgoodflameretardantproperties.TheLOIofcuredEPwere25.0%and25.7%forOP/m-dihydroxybenzene/EPandOP/p-dihydroxybenzene/EPsystem,respectively.TheverticalcombustiontestbothreachUL-94V-olevelc3]
作者: S. J. Cai , X. Q. Liu , J. Y. Liu
上傳時間: 2013-07-03 14:36:00
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