回收聚酯在木塑复合材料中的应用

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1、reinforcedWPCwereinvestigated．Theoptimizedprocessingparametersweredeterminedaccordingly．ComparedtounreinforcedWPC，themechanicalpropertiesandwaterresistanceofPF—WPCwereimproved．TheoptimumPETconetentwasabout3％．overwhichthestrengthandwaterresistanceofPF-WPCdecreasedduetounevendispersio

2、nandagglomerationofPETfiber．Eithergraftingmaleicanhydride(MA)ontoHDPEorsurfacetreatingPETfiberwithNaOHandKH570CanimprovethepropertiesoftheresultingPF-WPC．TreatmentofPETfiberwimNaOHcausedanincreaseinwateruptakeandareductioninthemechanicalpropertiesoftheresultingPF-WPC．Recycledpolyeth

3、yleneterephthalate(rPET)Wasmodifiedthroughmeltcompounding、^，inlMAPEinthepresenceoftitaniumtetrabutoxide(Ti(OBu)4)astransesterificationcatalyst．TheeffectofthecontentofTi(OBuhonthepropertiesofrPET／MAPEWasinvestigated．Toobtainmoldingmethodandprocessingconditionsforwood／rPETcomposites，m

4、odifiedrPETmeltcompoundedwitllwoodflourtopreparepolyester／woodflourcompositesindiffn'entprocessingmethods．RheologicstudyindicatedthattheviscosityofrPET／MAPEWasrapidlydecreasedwithincreaseoffrequency,showingashearthinningbehavior．ThemechanicalpropertiesofrPET／MAPEblendWasweakduetothe

5、two-phaseinterfacebetweenrPETandMAPEasobservedbySEM．TheadditionofTi(OBu)4increasedthemechanicalpropertiesandviscosityofrPET／MAPE，whichattributedtotheeffectiveimprovementofinterfacialcompatibilitybetweenrPETandMAPE．AstheamountofTi(OBu)4exceeded1％，themechanicalpropertiesandviscosityof

6、rPET／MAPEdecreased，whichmaybeduetoPETdegradationathightemperature．AdditionofTi(OBu)4didn’tdecreasemeltponofPET．Themechanicalpropertiesofpolyester／woodflourcompositescontainedmodifiedrPETandwoodflourbycompressionmoldingwerepoor．Thesingle-screwextrusionWash’tappropriateforpreparation．

7、11．．111．目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯Abstract⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯⋯⋯．．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．．⋯⋯I⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．II1绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．．⋯⋯⋯⋯．⋯．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯⋯⋯⋯⋯．．⋯．．11．1引言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯l1．2聚酯回收利用方法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．2．1物理回收法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯

8、⋯⋯⋯⋯⋯⋯．11．2．2化学回收法⋯