Tag: hydrophobic txheej
Kawm txog Superhydrophobic Biomimetic Surfaces
Cov khoom saum npoo ntawm cov ntaub ntawv tseem ceeb heev, thiab cov kws tshawb fawb sim txhua hom kev kom tau txais cov ntaub ntawv nto nrog cov khoom xav tau. Nrog rau txoj kev loj hlob ntawm bionic engineering, cov kws tshawb fawb tau them nyiaj ntau ntxiv rau qhov chaw lom neeg kom nkag siab tias qhov xwm txheej tuaj yeem daws teeb meem engineering li cas. Kev tshawb nrhiav dav dav ntawm cov chaw lom neeg tau pom tias cov chaw no muaj ntau yam txawv txawv. Qhov "lotus-effect" yog ib qho tshwm sim uas tus natural nto qauv raws li daim ntawv qhia yog siv los tsimNyeem ntxiv…
Superhydrophobic Surface tuaj yeem npaj tau los ntawm ob txoj hauv kev
Cov neeg paub txog kev tu tus kheej lotus nyhuv rau ntau xyoo, tab sis tsis tuaj yeem ua cov khoom raws li cov nplooj nplooj nplooj. Los ntawm qhov xwm txheej, qhov raug superhydrophobic nto - txoj kev tshawb nrhiav pom tias nplooj nplooj, tsim nrog ib qho tshwj xeeb geometry ntawm roughness nyob rau hauv lub qis nto zog khoom nto plays lub luag hauj lwm tseem ceeb ntawm superhydrophobic.Raws li cov hauv paus ntsiab lus, cov kws tshawb fawb pib ua raws li qhov saum npoo no. Tam sim no, kev tshawb fawb ntawm ntxhib superhydrophobic nto tau ntau qhov kev pab cuam. Hauv general, superhydrophobic ntoNyeem ntxiv…
Kev ntxuav tus kheej ntawm Super Hydrophobic Surface
Wettability yog ib qho tseem ceeb feature ntawm cov khoom nto, uas yog txiav txim los ntawm cov tshuaj muaj pes tsawg leeg thiab morphology ntawm lub nto. Super-hydrophilic thiab super hydrophobic nto cov yam ntxwv yog cov ntsiab lus tseem ceeb ntawm kev tshawb fawb ntxeem tau. Lub superhydrophobic (dej-repellent) nto generally hais txog qhov chaw uas lub kaum sab xis ntawm dej thiab saum npoo yog siab dua 150 degrees. Tias tib neeg paub superhydrophobic nto yog feem ntau los ntawm cov nplooj nplooj - nplooj nplooj nplooj, "tus kheej tu" tshwm sim. Piv txwv li, cov tee dej tuaj yeem dov mus rau yobNyeem ntxiv…
Lub hauv paus ntsiab lus ntawm Hydrophobic / Super Hydrophobic Txheej
Pa sol-gel coatings tau npaj siv MTMOS thiab TEOS ua silane precursors los tsim ib tug du, meej thiab ntom organic / inorganic network ntawm ib tug txhuas alloy substrate. Cov txheej txheem zoo li no tau paub tias muaj qhov adhesion zoo heev vim lawv muaj peev xwm tsim Al-O-Si linkages ntawm txheej txheej / substrate interface.Sample-II hauv txoj kev tshawb no sawv cev xws li cov pa sol-gel txheej. Txhawm rau txo qis lub zog saum npoo, thiab yog li ua kom muaj dej ntau ntxiv, peb tau koom nrog organo-silane uas muaj fluorooctyl saw, ntxiv rau MTMOS thiab TEOS (piv txwv.Nyeem ntxiv…
Super hydrophobic nto yog tsim los ntawm Super hydrophobic txheej
Super-hydrophobic txheej tuaj yeem ua los ntawm ntau yam khoom sib txawv. Cov hauv qab no paub tias muaj peev xwm ua tau rau txheej txheej: Manganese oxide polystyrene (MnO2 / PS) nano-composite Zinc oxide polystyrene (ZnO / PS) nano-composite Precipitated calcium carbonate Carbon nano-tube lugs Silica nano-coating Super-hydrophobic coatings yog siv. los tsim super hydrophobic nto. Thaum cov dej los yog cov khoom siv dej los rau hauv kev sib cuag nrog cov coated nto, cov dej los yog cov khoom yuav "khiav" ntawm qhov chaw vim yog cov yam ntxwv hydrophobic ntawm txheej. Neverwet yog ibNyeem ntxiv…
Kev tsim kho yav tom ntej ntawm cov xim hydrophobic
Cov xim hydrophobic feem ntau xa mus rau cov chav kawm ntawm cov txheej txheem qis zog uas cov dej zoo li qub sib cuag lub kaum sab xis θ ntawm cov txheej txheem ntawm qhov chaw du yog siab dua 90 °, thaum cov xim superhydrophobic yog hom tshiab txheej txheej nrog cov khoom tshwj xeeb, lub ntsiab lus dej sib cuag nrog txheej txheej. Lub kaum sab xis yog siab dua 150 ° thiab feem ntau txhais tau tias cov dej sib cuag lub kaum sab xis yog tsawg dua 5 °. Los ntawm 2017 txog 2022, kev lag luam xim hydrophobic yuav loj hlob ntawmNyeem ntxiv…