聚偏氟乙烯(PVDF)增韌體系的研究.pdf

1、聚偏氟乙烯(PVDF)增韌體系的研究學(xué)位論文完成日期：指導(dǎo)教師簽字：答辯委員會(huì)成員簽字：青島科技大學(xué)研究生學(xué)位論文STUDYONTOUGHENINGMODIFICATIONOFPVDFABSTRACTPVDFwithitsgoodchemicalstabilitythermalstabilitymechanicalstrengthandweatherresistancecharacteristicshasitsplaceintheflu

2、orinematerial，manymanufacturersathomeandabroadaresteppingupresearchtoexpanditsapplicationinthefieldofhighendFormousstudiesfocusonthemodificationofPVDFmembranesInthispaperbasedontheresearchofthePVDFontougheningcanexpandpo

3、ly(vinylidenefluoride)(PVDF)intheuseoftheharshenvironment，whichhasimportantpracticalsignificanceBasedonthemechanicspropertiestest、differentialthermalscanningcalorimetryfDSC)、scanningelectronmicroscope(SEM)、thermogravimet

4、ricanalysis(TGA)andFouriertransforminfraredspectrometer(FTIR)，westudiedthetougheningofPVDFsystemInthestudyofPVDF／TPUblendingsystem，comparedwithpressmolding，themoreaccurateexperimentalresultscanbeobtainedbyinjectionmoldin

5、gTheelongationatbreak，impactstrengthandprocessabilityofPVDFcanbeimprovedsignificantlybyaddingTPU，moreover，theelongationatbreakofPVDF／TPUblendingsystemcanbefurtherimprovedbyaddingPPg—MAHWhenSEBSwithdifferentstructureswere

6、employedastougheningagentofPVDF，theresultsshowedthatlinearstructuredSEBSimprovedthetensileductilityofPVDFWhenthecontentofSEBSgMAHwas1％theblendingsystemreacheditsmaximumofstrainatbreakInordertoimprovetheperformanceofPVDF／

7、SEBSblendingsystem，wegraftedonPVDFpowderTheresultssuchasFTIR、DSC、TGAshowedthatbacauseofthegraftedproductPVDFg—PSwasintroducedintothePVDF／SEBSblendingsystem，crystallinityofblendingsystemhadbeengreatlyimproved；whenaddingco