一種新型苯并噁嗪的合成及其固化行為的研究.pdf

1、湖南大學(xué)碩士學(xué)位論文一種新型苯并噁嗪的合成及其固化行為的研究姓名：鐘海林申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工程與技術(shù)指導(dǎo)教師：盧彥兵20100531一種新型苯并噬嗪的合成及j￡同化行為的研究AbstractInthispaper’theprogressofbenzoxazineresinwasreViewedAimingatthedisadvantagesofbenzoxazineresinsuchashighcuringtenlperatu

2、re、lowcrosslinkdensitiesandpoortoughness，anovelbenzoxazinecontainingmaleimideandcarboxylmoietieswassynthesizedFurthermore，blendingmodi行cationwasusedintheresearchandhighperfomanceresinwithlowprocessingtemperaturewasobtain

3、edThenovelbenzoxazine1【3一(4carboxylphenyl)3，4一dihydro一2H—benzo【e】【1，3】—oxazin6一yl】maleimide(Mal—Bz—Co)wassynthesizedbysolutionmethodwithselfmadeHPMasrawmaterial，andthesynthesizedconditionandpurificationwasresearchedBythe

4、research，isopropanolwasselectedtosynthesisMal—Bz—Co，whichshowedhighyieldandhighpurityoftheproductsAndtheresearchshowedthatmaininlpurityintheprimaryproductswastriazineintermediateandunreactedreagentsAnewseparationandpurif

5、icationmethodusedisopropanolanddioxanewasfoundbysolubilitytestThestructureofMalBzCowascharacterizedwithFouriertransforminfaredspectra(FTIR)andProtonnuclearmagneticresonancespectra(1HNMR)ThecuringbehaviorofMalBzCoandtheco

6、curingbehaviorofMal—BzCowithtwokindofepoxyresinswereresearchedbyDifferentialscanningcalorimetry(DSC)TheresultsshowedthatthecuringtenlperatureofMalBz—Cowasstillhighandthemaximumcuringtemperature(Tp)was2383oCHoweVer，thecur

7、ingtemperatureofMalBzCobecomesverylowwhencocuredwithD—Cresolformaldehydeepoxyresin(DCFER)orDiglycidyletherofbisphenolA(DGEBA)TheTpofMal—Bz—Co／D‘CFER(1：2)andMalBz—Co／DGEBA(1：1)were1486oCand1413oCrespectiVely，whichwerenoto

8、nlymuchlowerthanthatofpureMalBz—Co，butalsomuchlowerthanthatofthereponedbenzoxazine／epoxysystemTheeffectoftheratioofMalBzCoandD—CFERonthecuringbehaviorwasresearchedinthispaperAndtheresultsshowedthatthecuringtemperatureoft

9、heblendingsystemwasrelatiVelow(Tpaboutl415。C)whentheratioofMalBzCoandD—CFERwas1：1ThethennalpropertiesofpureMalBzCoresinandMalBzCo／DCFERresinwasresearchedbyThermogravimet“canalysis(TGA)TheresultsshowedthatTlo(degradationt

10、emperatureofloss1Owt％)ofpureMal—Bz—Cesinwas371oCandYc(charyieldat800)ofpureMalBz—Coresinwas45％AndTloandYcofMalBzCo／DCFER(1：1)resinwere380oCand434％respectivelyTheTGAresultsindicatedgoodthermalpropertiesofpureMal—Bz—Coresi