一種新型苯并噁嗪的合成及其固化行為的研究.pdf

1、湖南大學碩士學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：鐘海林申請學位級別：碩士專業(yè)：化學工程與技術指導教師：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