改性尼龍6制備及紡絲性能的研究_第1頁
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1、湖北大學碩士學位論文改性尼龍6制備及紡絲性能的研究姓名：伍冬瑞申請學位級別：碩士專業(yè)：高分子化學與物理指導教師：葉正濤20080501AbstractInthisstudymodifiedpolyamide(modifiedpolyamide，MPA)andnylon6claynanocomposite(PANYC)werepreparedbytheblendofnylon6(polyamide6，PA6)withcompatibili

2、zerprecursor(CP)ornylon6clay(NYC)Thenthepolyamideandnylon6clayblends(MPANYC)werepreparedbythemixedofPANYCandMPAThechangeofmolecularstructure，crystalpropertiesandmeltflowrateofnylon6compositeweresystematicinvestigatedasth

3、emodifierfilledAtlast，theachievabledrawratioandtenacityvaluesofmodifiednylon6werestudiedaftermeltspinningTheFTIRandMFRanalysisofMPAsamplesindicatedthattheinfraredabsorptionpeakoriginallyassociatedwiththeCPdisappearedgrad

4、uallyandthemeltflowrate(MFR)ofMPAreducedcontinuouswiththeincreaseofCPcontentsTheseresultssuggestedthatthe伊心reactionofPAandCPcouldtakeplacewhentheCPcontentswerelessthan10wt％，buttheinfraredabsorptionpeakofCPwasgraduallyeme

5、rgingwiththefurtherincreaseofCPWXRDandDSCanalysisofMPAsamplesshowedthatasmallnumberof0【formcrystalscorrespondingtotheoriginalnylon6changedto丫formcrystalswiththeincreaseofCPThemeltingtemperaturereducedgraduallyastheadditi

6、onofCPButthestartcrystallizationtemperature(T0刪)andcrystallizationtemperature(L)ofMPAsamplesatfirstincreasedandthendecreasedwiththefurtherincreaseofCPTheachievabledrawratioandtenacityvaluesofMPAaspreparedfibersincreasedt

7、oitsbiggestwhentheCPcontentsincreasedtofivepercent，butthencontinuedteducewiththefurtherincreaseofCEOntheotherhand，theinfraredabsorptionpeakandX—raydiffractionpatternsof0cformcrystalofPAxNYCysamplesassociatedwiththeorigin

8、alnylon6weakenedobviouslyorevendisappearedgraduallywiththeincreaseofNYCDSCanalysisshowedthattheTons甜andTOvaluesofPAxNYCysamplesincreasedfistandthenreducedwiththeincreaseofNYCThepercentagecrystallinity㈨increasedsignifican

9、tlybutthemeltingtemperaturereducedwiththeNYCincreaseInaddition，themeltflowrateofPAxNYCvsamplesdroppedcontinuousastheNYCcontentsincreasedto2wt％ItisworthnotingthattheachievabledrawratioandtenacityvaluesofPAxNYCyas—prepared

10、fibersfirstincreasedtothemaximumastheNYCcontentswereequalto05wt％andthendecreasedafterthecontentsofNYCcontinuedincreaseSimilartothePAxNYCyandMPAas—preparedfibers，theachievabledrawratioandtenacityvaluesof(MPAxhNYCyas—prepa

11、redfibersincreasedtoitslargestwhentheCPorNYCcontentsreachedtotheoptimalamounts(5wt％and05wt％)HoweverwhenCPorNYCcontentscontinuedtoincreaseagain，theachievabledrawratioandtenacityvalueswoulddropgraduallyKeywords：nylon6；comp

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