Isimiso se-Hydrophobic/Super Hydrophobic Coatings

Izembatho ezivamile ze-sol-gel zalungiswa kusetshenziswa i-MTMOS ne-TEOS njengama-silane precursors ukuze kwakhiwe inethiwekhi ye-organic/inorganic/inorganic network ebushelelezi, ecacile futhi eminyene ku-substrate ye-aluminium alloy. Izembatho ezinjalo zaziwa ngokunamathela okuhle kakhulu ngenxa yekhono lazo lokwakha ukuxhumana kwe-Al-O-Si ku-coating/substrate interface.
Isampula-II kulolu cwaningo imele ukunamathela okunjalo okujwayelekile kwe-sol-gel. Ukuze kwehliswe amandla angaphezulu, futhi ngaleyo ndlela kwandise i-hydrophobicity, sihlanganise i-organo-silane equkethe iketango le-fluorooctyl, ngaphezu kwe-MTMOS ne-TEOS (isampula A). Amaketanga e-Alkyl aqukethe ama-athomu e-fluorine aziwa ngokuhlinzeka nge-hydrophobicity enkulu. Amaketango anjalo, lapho exhunywe kunethiwekhi ye-polymer ngokuxhunyaniswa kwe-siloxane eguquguqukayo, angaba nokuthambekela kokuzungeza phezulu futhi ngaleyo ndlela anciphise amandla angaphezulu kwezingubo, njengoba kuboniswe kuMfanekiso 1. Njengoba indawo ye-hydrophobic ayincikile kuphela ekubunjweni kwamakhemikhali. ongaphezulu, kodwa futhi kuthonywa ukubukeka kwendawo kwamafilimu, sizame ukukhiqiza ama-coatings anamazinga ahlukahlukene obuhwaqa obungaphezulu. Kumasampuli B no-C, izinhlayiya ezincane kanye ne-nanosilica, ngokulandelana, zahlanganiswa ukuze kwakhiwe ukuhwashaza kwendawo okuzothuthukisa i-hydrophobicity. Ukusetshenziswa kwama-microparticles (isampula B) kanye nama-micro + nanoparticles (isampula C) asetshenziselwa ukuqonda umphumela wokuma kwezinhlayiya ezinjalo phezulu, ngakho-ke, umphumela we-hydrophobicity.

Umfanekiso wesi-2 ubonisa ukumelwa kohlaka kwezindawo ezicatshangelwayo ezingaphezulu kwezingubo ezinama-nano/microparticles nangaphandle kwazo, kanye ne-engeli yazo yokuthinta amanzi ezindaweni ezinjalo.