幾種氧化物薄膜及聚丙烯材料的表面潤濕性控制研究.pdf

1、大連理工大學碩士學位論文幾種氧化物薄膜及聚丙烯材料的表面潤濕性控制研究姓名：秦衛(wèi)龍申請學位級別：碩士專業(yè)：化學工程指導教師：王軍趙毅20050601兒種氧化物薄膜及聚丙烯材料的表面潤濕性控制研究StudyonsurfacewettabilitycontrolofseveraloxidefilmsandpolypropyleneAbstractWettabilityofsolidsurfacesisanimportantpropertyt

2、akentoconsiderationinmanypracticalfieldsThecontrolofsurfacewettabilityhasatlractedincreasingresearchattentioninrecentyears11isdissertationworksmairdyonthistopicFirstlythecontrolofthewettabilityofseveraloxidethinfilms，inc

3、ludingTi02，ZnO，Sn02，Fe203andCr203，isdemonstratedbytheuseofUVirradiationandwetmechanicalrobbing，Then，wetchemicaltreatmenthasbeensuccessfullyappliedtoimprovethehydrophilicityofpolypropylenesurfaceInaddition，anovelsol—gelap

4、proachhasbeendevelopedforthefabricationofFe203，andCr203filmsSeveraloxidefilms，includingTi02，ZnO，Sn02，Fe203andCr203，arefabricatedoncA3rnmonglasssubstratesbysol—geldip—coatingtechniqueTheas—preparedfilmsandcorrespondingpow

5、dersarecharacterizedbyvarioustechniques，suchasDSC，XRD，SEMandAFMnecontrollabilityoftheirwettabilltyuponUVirradiationandwetmechanicalrobbingiSinvestigatedTheresuitsindicatethattheas—preparedfilmsaredense，uniformandadheredt

6、ightlytothesubstmtesThefilmsarecomposedofnanocrystallineparticlesTheirradiationwithUVrendersthesurfaceofTi02，ZnO，Sn02andFe203hydrophilicThishydrophilicsurface，afterwetrubbingtreating，Canbeconvertedtoarelativelyhydrophobi

7、coneThehydrophilichydrophobictransitionisreversibleandcallbequicklyaccomplishedThetransitionfromhydrophobicitytohydmphilicityunderUVirradiationisbelievedtobearesultoftheformationofsurfacehydroxylAlso，thetransitionfromhyd

8、mphilicitytohydrophobicityunder“wetrobbing”maybecausedbytheeliminationofsurfacehydroxylonthesurfaceToimprovethehydrophilicityofpolypropylenesurface，wetchemicaltreatingisusedinthisstudyThefollowinginfluentialfactorsinclud

9、ingthespeciesofoxidizer，concentrationofH2S04，themassratioofK2Cr204toH2S04，treatingtime，andtreatingtemperature，areinvestigatedThetreatingconditionsareoptimizedaccordingtoorthogonaltestsAftertreating，thecontactangledecreas

10、esby30％TheFT—IRspectrashowanincreaseOftheintensityoftheabsorptionpeakofthecarboxylicgroupC=Oatl7l4cm—ThisindicatesthatthenumberofpolaroxygenousgroupsincreasesaftertreatingAtthesametime，themicroscopeimagesrevealthatsurfac