PVC增塑糊塑化及其制品迁移机理的研究

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ThePlasticizationMechanismofPVCPlastisolandtheMigration

MechanismofPlasticizerinPVC

YETing,BIANJie,ZHUGeng—ping,XUYu

(CollegeofMaterialandChemistryandChemicalEngineering,HangzhouNormalUniversity,Hangzhou310036,China)

Abstract:ThepaperhasstudiedontheplasticizationmechanismofPVCplastisolandthemigrationmechanismofplasticizerinPVCbyIRandDLI(depolatizedlightintensity)techniques.TheresulthasshowedthatthePVCplasticizationistheprocessofformattingthehydrogen-bondsbetweentheearbonyloftheplasticizerandthea-hydrogenofPVCinthe

typeofC一0…H—C—Cl,nomatterwhethertheH—C—C1groupisinthecrystallinestateornot.ThedegreeofinteractionbetweenPVCandplasticizerdependsonthenumbersandthestabilityofthehydrogen—bond.Themigrationrate

ofplasticizersinPVCisdecidedmainlybytheirmoleculeweights,andinfluencedbytheinteractiondegreebetweenplasticizerandPVC.

Keywords:PVC;plasticizationmechanism;plasticizermigration;IR

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