微鋁管超疏水表面制備及水流動(dòng)特性的研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文微鋁管超疏水表面制備及水流動(dòng)特性的研究姓名：霍素斌申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工程指導(dǎo)教師：于志家20070601一絲塑篁塑墮查墨亙型魚墨查亟墊暨絲塑堡塑InvestigationsontheFabricationofSuperHydrophobieSurfaceOnAluminumMicroTubesandWaterFlowCharacteristiesintheTubesAbstractWitllacidic

2、etchingandfluorinationtreatment，superhydrophobicsurfaceiSsuccessfullymadeonaluminousflaken圮watercontactangleonthesurfaceislalg盯than150。雒well鹋coataetanglehysteresisofabout4(5／mLdroplet)mresultantS；l：llfage$areexaminedbyme

3、ansofscanningelectronmicroscopy(SEM)ItISshownthata“l(fā)abyrinthie“蹦nld：u∞withmasscuboidplateausandcavesofmicroandllanOSlltlCtlll嗆formsOnthesuperhydrophobicSllrfaeeofaluminousflakeSurfacemicrostrueturesalethekeytothepreparat

4、ionofsuperhydrophobicsurfacesEffectsofdifferent口鋤砌etefsOilcontactanglesarcmvestigatedBasedonabovel讎alch)superhydrophobiealuminousmicro。channelsaresuccessfullymadebyreasonableamelioratingpreparationtechnologyandexperiment

5、condition‰flowcharacteristicsofwaterinsuperhydrophiliemicroehannelalestudied豫experimentresultssuggestthatthecriticalRefortransitionfmmlaminartoturbulentflowinsuperhydrophilicmicrochannelsdoesn’tevidentlychangecomparedwit

6、hthatinlllacro—channelsInlaminarrange，theroughnesshasasignificanteffectOntheflowresistanceTheflowcharaeteristicsofWaterinsuperhydrophobicmicro_channelsarestudiedItiSfoundthatthereisthelatertransitionwhichmaybeinducedbyth

7、echalactefisdcsofsuperhydrophobic蛐fagecomparedwiththatinuntreatedchannelsn圮pressl】redropofwaterflowinginsuperhydrophobiemicrochannelsevidentlydecreasescomp盯exlwiththatinsuperhydrophilicmicrochannels，withthemaximaldecreas

8、eofabout40％11IeslipvelocityandthesliplengthafecalculatedatdifferentflowvelocityandtheresultsshowthatboththeslipvelocityandthesliplengthincreasealongwithWaterflowvelocityn“心a∞nforwaterslippageOilsuperhydrophobicsurfacesis