STRUCTURE AND THERMAL PROPERTIES OF EXFOLIATED PVC/MGAL-LDH NANOCOMPOSITES VIA EXFOLIATION RESTACKING METHOD，2008纳米填充阻燃聚合物及复合材料国际学术研讨会（10.16-10.17，北京）-中国聚合物网,论文下载

STRUCTURE AND THERMAL PROPERTIES OF EXFOLIATED PVC/MGAL-LDH NANOCOMPOSITES VIA EXFOLIATION RESTACKING METHOD

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polyvinyl chloride layered double hydroxide nanocomposites thermal
properties exfoliation restacking

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488K

所属学科：

分子表征

来源：

2008纳米填充阻燃聚合物及复合材料国际学术研讨会（10.16-10.17，北京）

简介：

Exfoliatedpolyvinylchloride(PVC)/MgAllayereddoublehydroxide(LDH)nanocompositeshadbeenpreparedbyexfoliationrestackingmethodusinglauryletherphosphate(PK)modifiedLDH.TheformationprocessandstructureoftheexfoliatedPVC/LDHnanocompoiteswerecharacterizedbyX-raydiffraction(XRD)andtransmissionelectronmicroscopy(TEM),showingthatLDHwerewellexfoliatedanduniformlydistributedinPVCmatrix.Withdifferentialscanningcalorimetry(DSC)theglasstransitiontemperaturesofPVCphasesinthePVC/LDHnanocompositesweremeasuredandaslightlowervaluethanthatofpristinePVChadbeengiveninthepaper.Thermogravimetricanalysis(TGA)resultsshowthatthepresenceofLDHenhancedthedehydrochlorinationtemperature(Tmax1),reducedthemaximumdegradationrate(Rmax1)andthe5%weightlosstemperature,andpromotedthecharformationofPVC.However,thethermaldegradationtemperature(Tmax2)andthermaldegradationrate(Rmax2)ofthedehydrochlorinatedPVCwerelittleaffectedbythepresenceofLDH.TheapparentactivationenergieswerecalculatedbythemethodofFlynn-Wall-Ozawainnitrogenatfourdifferentheatingrates,showingthatthenanocompositeincreasedtheapparentactivationenergiesby10-26kJ/molwhencomparedwithpristinePVC,implyingthattheexfoliatedLDHlayersimprovethestabilityofchlorineatomonthePVCchains.

作者：

Nianhua Huang,Xiao Liu1,Jianqi Wang

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2009-02-17 13:58:53

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zuowu 2009-03-29 19:03:44

相当的强大···我下了你们都别下哈···

gl-xu 2009-03-03 20:16:05

没什么东西好看

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