丁腈弹性纳米粒子改性酚醛树脂的研究

32004210211,2004211218;(G1999064800);3331,22111133(1100013)(2100871),,,,,.,,.,..,,,,,,,.,.,[1][2].,[3].[4,5],.(NBENP),[6].(DSC)(SEM),,.1,.NBENP,VP2401,,100nm,26%.NBENP58101520phr,,.80,.,,.,,80,3h;90,2h;100,2h;120,2h.,,150,4h;180,4h.,.,80mm10mm4mm.2NicoletMagna2IR760NBENP(5050).,.TAQ100DSC,5KPmin,50300,,50mLPmin.GB22576289.ISO17922000,ISO17822001.PerkinElmerTGA27,50600,N2,10KPmin.PhilipsXL230320056ACTAPOLYMERICASINICANo.3Jun.,2005467.3NBENP,[7].NBENP,NBENP(5050),1.cab,(1)1060980cm-1CO,1058cm-1,,;(2)1057cm-1;(3)3333cm-13375cm-1,,;(4)NBENP2238cm-1,18002200cm-1;(5)NBENP1,41675cm-1965cm-1CH,1,2911cm-1CH,NBENP,911cm-1965cm-1,,1675cm-1,,.Fig.1FT2IRspectraofresol(a),NBENP(b)andtheirmixture(c),NBENP,,,,.:(1)HCCH2CN+CH2RHOH2COHCH2OHRHOH2COHCH2OCNHCHCH2CH2(2)HCCH2CH2CHCH2+RHOH2COHCH2OHRHOH2COHCH2OCH2CH2CHCH2CH2NBENP,..,.4NBENPDSC2.DSC,170,,;230,.2,170230,NBENPDSC,170230,170.,,NBENP,,170,,;NBENP,,.,9113%8417%,..8642005Fig.2DSCcurvesofresols51.1,418wt%NBENP117kJPm2312kJPm2,88%,6712MPa7217MPa,8%.NBENP,,.NBENP,,,,,,.Table1MechanicalandthermalpropertiesofNBENPmodifiedphenolicmoldingsampleNBENPcontent(wt%)Charpyimpactstrength(kJPm2)Flexuralstrength(MPa)Flexuralmodulus(GPa)01176712412441831272173152(Td).NBENP3.Td2.2,Td43,300,.,,,Td.3,370,.Fig.3TGcurvesofNBENPmodifiedphenolicmoldingsampleTable2TGAofNBENPmodifiedphenolicmoldingsampleNBENPcontent(wt%)Td()Residuein300(%)Residuein420(%)Residuein600(%)04131719517294100761774184571059610693147691206SEM4NBENP,.4(a),,.4(b),NBENP,(4c),,.Fig.4SEMphotographoffracturesurfaceofphenolicmoldingsamplea)Purephenolic;b),c)418%NBENPmodifiedphenolic,,,,[8].9643:Fig.5Specialtopographyoffracturesurface,,[9].NBENP,,,,,.NBENP.,,,5,150nm.,.,,.NBENP,,..REFERENCES1XuWeibing(),BaoSuping(),ShenShijun(),TangShupei(),HePingsheng().ActaPolymericaSinica(),2002,(4):4574612SuZhiqiang(),LiuYunfang(),WeiQiang(),ZhangYang(),ShenZengmin().CarbonTechniques(),2002,(1):8113CaminoG,AlbaE,BuonficoP,VikoulovK.JApplPolymSci,2001,82(6):134613514LiuYQ,ZhangXH,WeiGS,GaoJM,HuangF,ZhangML,GuoMF,QiaoJL.ChineseJPolymSci,2002,20(2):93985HuangF,LiuYQ,ZhangXH,WeiGS,GaoJM,SongZH,ZhangML,QiaoJL.MacromolRapidCommun,2002,23:7867906QiaoJL,WeiGS,ZhangXH,ZhangSJ,GaoJM,ZhangW,LiuYQ,LiJQ,ZhangFR,ZhaiRL,ShaoJB,YanKK,YinH.USApatent,6423760.2002-07-237SasidharanAP,RamaswamyR.JApplPolymSci,1998,69:118712018DuttaA,MaumanE.PolymMaterSciEng,1992,67:4824839YinJinghua(),MoZhishen().ModernPolymerPhysics().Beijing():SciencePress(),2001.217218STUDYONMODIFICATIONOFPHENOLICRESINBYELASTOMERICNANOPARTICLESOFNITRILEBUTADIENEMAHengyi1,2,WEIGenshuan2,ZHANGXiaohong1,LIUYiqun1,HUANGFan1,QIAOJinliang1(1SINOPECBeijingResearchInstituteofChemicalIndustry,Beijing100013)(2DepartmentofAppliedChemistry,CollegeofChemistryandMolecularEngineering,PekingUniversity,Beijing100871)AbstractAnitrilebutadieneelastomericnanoparticle(NBENP)wasusedformodificationofresolphenolicresin.ThereactionbetweenNBENPandresolwasmeasuredbyFT2IR,andthecuringbehaviorofresinswascharacteredbyDSC.Themecanicalandthermalpropertiesofmodifiedresinsweremeasured.FracturesurfaceofmodifiedphenolicresinwasobservedbySEM.Theresultsshowedthat,theimpactstrength,flexuralstrengthandheatresistanceofNBENPmodifiedphenolicresinwereincreasedatthesametime.AstronginterfaceadhesionwasformedbecauseofthereactionbetweenhydroxymethylofresolandNBENP.Thisspecialinterfaceconducestotransmissionofstresswhenmaterialswereloaded,andinhibitionofdeformationanddecompositionofphenolicmatrixwhenheated.Themicrocrack,initiatedwithrubberparticle,andcavitationofrubbersmightbethemainreasonforincreaseintoughness.Thehoneycombstructureinfracturesurfacemightbeanotherpossiblereasonforexcellentmechanicalproperties.KeywordsResol,NBENP,Toughness,Heatresistance0742005