聚乙烯中空纖維微孔膜的研制.pdf

1、天津工業(yè)大學(xué)碩士學(xué)位論文聚乙烯中空纖維微孔膜的研制姓名：朱磊申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：杜啟云劉振20021201ABSTRACTUsingthepolyethylene，weproducedthepolyethylenemicroporoushollowfibermembraneandfiguredoutthediameteranddistributingofmicroporebyseekingthebetternumer

2、icalvalue，thedataofgasosmosisexperimentandKozeny—CarmanformulausedinthisprocessThen，wecarriedoutsurfacemodificationonhollowfibermembrane’SsurfaceAtfirst，weproducedthepolyethylenemicroporoushollowfibermembranebyascendingm

3、eltingfilatureandmademicroporebydrawingTheeffectsoffilature、annealanddrawingtechnicsonmembranescapabilitywerecomparedWecarriedoutthenumericalvaluesimulationanalysistotheprocessofascendingmeltingfilatureandconcludedthatas

4、cendingmeltingfilaturehaveadvantagesoverdescendingmeltingfilature，asfollows：1Resinwithlargerrelativemolecularweightcouldbespun；2Fiberwithlargerdiametercould；3Well—proportionedgeometricaldimension、ratioofmicroporeandmolec

5、uletropismcouldbeacquired；4HigherosmosisfluxandmechanicalintensitycouldbeacquiredSecondly，withthedataofgasosmosisexperimentandKozeny—Carmanformula，wefiguredoutthediameteranddistributingofmicroporebyseekingthebetternumeri

6、calvalueTheadvantagesaresimplemethodandreliabledataWedealwiththedatabycomputerandcouldexpresstheaveragediameterofmembrane’SmicroporeefficientlyAtlast，toimprovethehydrophilicityofmembraneandextendtheapplicationrangesmembr

7、ane’SsurfaceInthispaperweusedthreemodificationmethods，asfollows：1Mixedsolutionwithethanolandacidmodification；2Surfactantmodification；3SurfacegraftingmodificationTheexperimentalresultindicatedthatmixedsolutionwithethanola

8、ndacidmodificationisbetterTheeffectisgreatestwhentheproportionmentofmixedsolutionisethanol(80m01)：water(138mot)：nitricacid(62m01)Atthistime，waterfluxcouldreachat250L／m2hSurfactantmodificationandsurfacegraftingmodificatio