有机硅耐高温涂料的研究

3312006JOURNALOFBEIJINGUNIVERSITYOFCHEMICALTECHNOLOGYVol.33,No.120063(,,100029):,700,,3050g2030g115610g10g115g:;;:TQ32412;TQ63716:2005205220:,1963,3E2mail:[e-mail],[1],,,[2][3],1427,700,,,,,,,,,700,1111,50%,,;sn2330,50%,;;11211211,,11212,11213,,,11311311,1802h,,5/min,,,,(25),,,,,,,(25),,11312,GB/T17321993;,GB17201979;,GB1728197911313,S22215212,;,TGS22,PERKIN2ELMER2211,,,,11Table1Twokindsofcoatingformulas/g123050sn2330305015351535510510525525015015020204040100100141014112122125001h,22,,,(1),800,,18211%,28615%,2,,,,,[4],21,sn23302Table2Performanceparameterofthetwokindsofcoatingformulas1221(50025)12/kgcm2025/min610/h111610h500,;2h600,;7008h600,;1h700,112Fig.1TGcurveofformula1and2213,,,,221311,[5],,,0620063,5001h,23Table3Effectofdosageoflowmelting2pointglasspowderonresistancetohightemperature/g500/min600/min700/min10325190351541023040205152954525655335553092039085358603557050225001h(1000)Fig.2Microscopephotoofthecoatingheatedfor1hunder500(1000)2,,5001h:400500,,,SiO2,2(b),,,;2(a),,,32,,,;,:,,,,500,,,2030g,,[4],,,,,21312,,,5001h44Table4Effectofdosageoftalcumpowderoncoatingsperformance/g/g0131180163100194151126101154,112g,,610g21313,,;,,33,,,,4,,,,,,10g,10g21314161:3Fig.3Effectofdosageofaluminiumpowderonresistancetohightemperature4Fig.4Sketchmapofaluminiumpowderdiffusingtothesteelandformingalloy,RnSiX4-n(n4),R,X,55Fig.5Sketchmapofinteractivityofcouplingagentwithresin,pigmentsandsteelsubstrate55Table5Effectofdosageofcouplingagentonadhesionofthecoating/g011523013230162301923112131151221113310235,,,013210g,115g,3(1),,700,(2),2030g;115610g;,,10g;115g;3050g[1],.[J].,2002,16(3):28.[2].[M].:,2004,59.[3].[M].:,1984.[4],,,.[C].().:,2004,105.[5].[J].,2003,41:3.(67)262006[4]GuoBaohua,ChanChiming.Chainextensionofpoly(butyleneterephthalate)byreactiveextrusion[J].JApplPolymSci,1999,71:1827-1834.[5]TakiyamaE,FujimakiT.Biodegradableplasticsandpolymers[M].NewYork:Elsevier,1994:150.[6]BruceVB,AkkapeddiMK,GlansJH.Processforpro2ducingandpolyamidecompositionscomprisinglactamylphosphatesaschainextendingagents:US5357030[P].1994211218.[7]BruceVB,AkkapeddiMK,GlansJH.Processforpro2ducingandpolyestercompositionscomprisinglactamylphosphatesaschainextendingagents:US5281676[P].1994201225.[8],,,.66[J].,1999(4):7-8.Chain2extendingreactionofpolybutyleneadipateprepolymerswithtricapralactamylphosphiteCHENXue2rongZHAOJing2bo(CollegeofMaterialsScienceandEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Polybutyleneadipate(PBA)prepolymerswithdifferentterminalgroupssuchasCOOHandOHwerepreparedbypolycondensationfromadipicacidwithbutanediolatdifferentmolarratiosinxylenesolutionorbulksystem.Thechain2extendingreactionofPBAprepolymerswithtricaprolactamylphosphite(TCP)wascar2riedoutunderareducedpressure.Theinfluencefactorssuchasthetemperature,PBA/TCPmolarratioandtheterminalgroupsofthePBAprepolymerswerealsostudied.Theoptimalconditionsofthechain2extendingreac2tionare:thePBA/TCPmolarratiois310;thechain2exendingreactiontemperatureis180;thechain2exend2ingreactiontimeis2h.Attheoptimalconditions,achainextendedPBAwithMnof9627andMwof72255wasobtained.Twodifferentchain2extendingmechanismswereproposed.Keywords:polybutyleneadipate;tricaprolactamylphosphite;chain2extendingreaction(62)Preparationoforganicsiliconecoatingwithhigh2temperatureresistanceWANGHai2qiaoLIYingXUNGuo2liLIXiao2yu(TheKeyLaboratoryofNanomaterial,MinistryofEducation,CollegeofMaterialsScienceandEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Akindofhightemperatureorganicsiliconecoatingthatcanresist700wasprepared.Twogeneraltrademarksiliconeresinswereused.Theeffectofthelowmelting2pointglasspowder,talcumpowder,alumini2umpowderandthesiliconalkylcouplingagentontheperformanceofthecoatingandtheirmechanismofactionwerestudied.Theresultsshowedthattheperformanceofthecoatingisbestwhenthemassoforganicsiliconeresin,lowmelting2pointglasspowder,talcumpowder,aluminiumpowder,andsiliconalkylcouplingagentis3050g,2030g,115610g,10gand115g,respectively.Keywords:organicsilicone;hightemperaturecoatings;mechanismofaction761: