npmi2fgma2fst的制备与其在环氧树脂改性中的应用

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1、摘要度分别提高了70℃和50℃。另外对改性后的环氧固化物进行了热分解动力学研究，采用Starink法、Kissinger法和F-W-O法计算了固化物的热分解表观活化能E值分别为：186．33kJ／tool、183．86kJ／mol、179．15kJ／mol，三种计算方法求得的E值相差不大。关键词：溶解度密度黏度NPMI／GMA／St三元共聚物耐热改性热分解动力学ⅡAbstractN—substitutedmaleimideisanimportantmonomerofheat·resistantmodifi

2、cationanditscopolymerwithvinylmonomersisoftenappliedtoheat-resistantmodifiedfieldsofresin．Itcanimprovetheheatresistanceoftheresin，inthecaseoftheotherpropertiesofthepolymermaterialnotaffectsignificantly．N-phenylmaleimideasmainmonomer,glycidylmethaerylatean

3、dstyreneascomonomer,synthesisNPMI／GMA／StterpolymenThen嬲aheat—resistantmodifierblendscuredwithmatrixresin．studythechangesoftheresinheatresistanceafterthemodified,inordertoachievetheeffectofhighheatresistanceofmatrixresin．Combinedwithrelatedliteratureprepar

4、edtheN-phenylmaleimide，thestructureofthemonomerwascharacterizedandconfirmedbyFTIR、1HNMR．Onthisbasis，thesolubilitiesofN-phenylmaleimideintheacetone，ethanolItetrahydrofuran，chloroform、ethylacetate、andmethylethylketonesolutionsystemweremeasured．The舳equationa

5、ndApelblatsimplifiedequationwereusedtocorrelatedtheexperimentaldata，themaxil[n：unlrelativeaveragedeviationwere5．56％、3．30％，andthefittingresultofApelblatsimplifiedequationwasbetter．DensitiesandviscositiesofthebinarymixturesofN-phenylmaleimidewithethanol、ace

6、toneandethylacetateweredetermined,thetemperaturewasrangefrom293．15K-318．15ICDensitiesandviscositiesdatawerefittedby肿equationrespectively,andthelargeststandarddeviationwaslessthan1．61％．Theequationappliestothefittingofthedensityandviscositysystems．N-phenylm

7、aleimide、glycidylmethacrylateandstyreneareadoptedasrawmaterials，tosynthesisoftheNPMI／GMAJStterpolymerthroughthesolutioncopolymerization．Thes缸'uctureoftheproductWascharacterizedandconfirmedbyFTIRthemolecularweightanditsdistributionwasmeasuredbyGPC．Processc

8、onditionsareoptimizedthroughsinglefactorexperiments：polymerizationtemperatureis75oC，theamountofinitiatoris1．0％，monomermelarratio0、IPMI：GMA：St)is1：1：2，totalmonomerconcentrationis0．6mol／L，reactiontimeiS6h，undertheseco