I-silica ye-Hydrophobic iwuhlobo lwempahla ye-silica ezindawo zayo ezingaphezulu zishintsha ukusuka ku-hydrophilic kuya ku-hydrophobic ngemva kokwelashwa okukhethekile.

Ngesisekelo se-silica evuthayo noma i-silica eshisayo, ingaphezulu lixhunywe namaqembu e-hydrophobic ngezindlela zokuguqulwa kwamakhemikhali, njengokwelashwa kwe-ejenti yokuhlanganisa i-silane, ingxenye ye-hydrophobic ye-silane isabela neqembu le-hydroxyl phezu kwe-silicon dioxide, ukuze ingaphezulu le-silicon dioxide limbozwe amaqembu e-hydrophobic.

Impahla ebonakalayo
- Ukubukeka ngokuvamile kuyimpushana emhlophe, efana ne-silica evamile.
- Inosayizi wezinhlayiyana ze-nanoscale, okuyinikeza indawo enkulu ethile engaphezulu. Kodwa-ke, ngenxa ye-hydrophobic surface, ibonisa izakhiwo eziyingqayizivele lapho uthintana namanzi, njengokungacwiliswa kalula ngamanzi njenge-silica ye-hydrophilic, futhi kuyoba khona i-hydrophobic phenomenon efana ne "lotus leaf effect".

Impahla yamakhemikhali
- Ukuzinza kwamakhemikhali aphezulu, kungasimama ezingeni elithile le-asidi, imvelo ye-alkali.
- Amaqembu e-Hydrophobic angaphezulu anikeza ukuhlobana okuhle kwezinhlanganisela eziphilayo, angahlakazeka kahle ezincibilikisini eziningi eziphilayo, futhi abe nesixosha emanzini.

Inkambu yohlelo lokusebenza

- Imboni kapende: ingathuthukisa kakhulu ukusebenza kopende olungangeni manzi, nokuvikela umswakama. Lapho izigqoko zisetshenziswa ezindaweni ezinjengamabhilidi angaphandle nemikhumbi, i-silica ye-hydrophobic ingavimbela umswakama ukuthi ungangeni ekugqokeni, ngaleyo ndlela wandise impilo yesevisi ye-coating, kuyilapho futhi ithuthukisa i-rheology yokugqoka futhi yenza ukugqoka kube lula ukusebenzisa.
- Imboni yezimonyo: Kwezinye izimonyo ezingangeni manzi, njenge-mascara engangeni manzi, i-lipstick engangeni manzi neminye imikhiqizo, i-hydrophobic silica njengesengezo esibalulekile, ingavimbela izimonyo ukuthi zingancibiliki noma zigezwe ngamanzi, ukusiza umkhiqizo ugcine umphumela omuhle wezimonyo.
- Izinto ze-elekthronikhi: Isetshenziselwa ukupakisha izinto zemikhiqizo ye-elekthronikhi ukuvimbela umswakama ukuthi ubangele umonakalo ezingxenyeni ze-elekthronikhi, kuyilapho ukuhlakazeka kwawo okuhle kusiza ukuthuthukisa ukusebenza kwezinto zokupakisha
Ekuguqulweni kwe-hydrophobic ye-silica, izinsiza ezisetshenziswa kakhulu yizi ezilandelayo:

I-ejenti yokuguqulwa evamile
1. Silane coupling agent
- Uhlobo kanye nezici: Lesi isigaba esivame ukusetshenziswa kakhulu sezithasiselo. Okufana ne-methyl trimethoxy-silane, i-vinyl trimethoxy-silane, njll. Isakhiwo sayo samangqamuzana ngokuvamile siqukethe amaqembu asebenzayo angasabela neqembu le-hydroxyl ebusweni be-silicon dioxide (njengeqembu le-methoxy) kanye namaqembu e-organic ane-hydrophobicity (njengeqembu le-methyl kanye neqembu le-vinyl).
- Isimiso sesenzo: Iqembu elisebenzayo ku-ejenti yokuhlanganisa i-silane lizosabela ngokwekhemikhali neqembu le-hydroxyl ebusweni be-silicon dioxide ukuze lenze isibopho samakhemikhali, kuyilapho iqembu le-hydrophobic ngakolunye uhlangothi lizodlulela ngaphandle, ngaleyo ndlela liguqule izici zobuso be-silicon dioxide ukusuka ku-hydrophilic kuya ku-hydrophobic.

2. Amafutha e-Silicone
- Uhlobo nezici: njengamafutha e-silicone e-dimethyl, njll. Amafutha e-Silicone anokuqina okuhle kwamakhemikhali, ukungezwani okuphansi kwendawo kanye ne-hydrophobicity enhle kakhulu.
- Isimiso sesenzo: Uwoyela we-silicone ungambozwa phezu kwe-silicon dioxide nge-adsorption ebonakalayo noma ukuhlanganisa amakhemikhali ingxenye. Enqubweni ye-adsorption ebonakalayo, ngenxa ye-hydrophobicity yamafutha a-silicone ngokwayo, ungqimba lwe-hydrophobic luzokwakhiwa phezu kwe-silicon dioxide, ngaleyo ndlela kuncishiswe ukuthintana phakathi kwe-silicon dioxide namanzi.

Inkampani

Amaqoqo

Mayelana

Silandele