Structure changes and tensile properties of poly(4,4’-diphenylsulphone terephthalamide-co-3,3’-diphenyl-sulphone terephthalamide) fiber during drawing process ，2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）-中国聚合物网,论文下载

Structure changes and tensile properties of poly(4,4’-diphenylsulphone terephthalamide-co-3,3’-diphenyl-sulphone terephthalamide) fiber during drawing process

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关键词：

polyarylsulphonamide fiber tensile property crystal structure drawing
technology

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所属学科：

分子表征

来源：

2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）

简介：

Thetensilepropertiesofthehigh-temperatureresistantPoly(4,4’-diphenylsulphoneterephthalamide-co-3,3’-diphenylsulphoneterephthalamide)(PSA)filamentswereinvestigatedbythetemperature-controlledStress-strainTester.Theeffectsofdrawingrate,drawingratioanddrawingtemperatureonthetensilepropertywereinvestigatedbyanalyzingthecharacteristicsofthetensilecurvesobtainedatdifferentdrawingconditions.DevelopmentofstructureandmorphologyforPSAas-spunfilamentduringdrawingprocesswasstudiedbysynchrotronwide-angleX-raydiffraction(WAXD)andsmall-angleX-rayscattering(SAXS)techniques.Itisshownthatthestrengthincreasedwiththeincreaseofdrawingratiountil2.2whilethecorrespondingelongationdecreased.ThetenacityofPSAfilamentenhancedwhendrawnathighertensilerateuntil30mm/minandreduceddramaticallyattensilerateof40mm/min.Theeffectofincreasingthedrawingtemperatureontensilepropertyequalstothatofdecreasingthedrawingrateinthecold-drawingprocess.AnalyzingtheWAXDpatternsshowsthatcrystallineorientationofPSAas-spunfilamentimprovedsignificantlywhendrawnuptostrainof220%anditcorrelatesverywellwiththemorphologychangesuggestedbySAXSresults.

作者：

WU Wantao,XIE Chao, ZHANG Li, ZHANG Yumei, WANG Huaping

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2010-03-23 11:58:50

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