izindaba

I-Titanium dioxide (TiO2) iwumbala omhlophe ofaneleka kakhulu ukuthola ubumhlophe namandla okufihla kuma-coatings, oyinki namapulasitiki.Lokhu kungenxa yokuthi inenkomba ye-refractive ephezulu kakhulu futhi ayikutholi ukukhanya okubonakalayo.I-TiO2 futhi itholakala kalula njengezinhlayiya ezinosayizi olungile (d ≈ 280 nm) nomumo ofanele (oyindilinga ongaphezulu noma ongaphansi) kanye nezinhlobonhlobo zokwelashwa kwangemuva.

Kodwa-ke, i-pigment iyabiza, ikakhulukazi lapho kusetshenziswa amanani entengo yezinhlelo.Futhi, kuhlala kunesidingo sokuthuthukisa isu elinobufakazi obugcwele ukuze kutholwe imiphumela engcono kakhulu ngokwesilinganiso sezindleko/ukusebenza, ukusebenza kahle kokuhlakaza, ukuhlakazeka... kuyilapho ulisebenzisa ekwenziweni kokumboza.Ingabe nawe usesha okufanayo?

Hlola ulwazi oluningiliziwe lwe-TiO2 pigment, ukusebenza kahle kwayo kokuhlakazeka, ukwenza kahle, ukukhetha, njll. ukuze uzuze amandla angcono kakhulu ombala omhlophe namandla okufihla ekuhlanganiseni kwakho.

Konke Mayelana ne-Titanium Dioxide Pigment

I-Titanium dioxide (i-TiO2) i-pigment emhlophe esetshenziselwa ukunikeza ubumhlophe namandla okufihla, okubizwa nangokuthi i-opacity, kuma-coatings, oyinki, namapulasitiki.Isizathu salokhu sikabili:
Izinhlayiya ze-oTiO2 zosayizi olungile zisakaza ukukhanya okubonakalayo, ezinobude beza obungu-λ ≈ 380 - 700 nm, ngempumelelo ngoba i-TiO2 inenkomba ephezulu ye-refractive
oImhlophe ngoba ayikutholi ukukhanya okubonakalayo

I-pigment iyabiza, ikakhulukazi uma kusetshenziswa amanani entengo yezinhlelo.Izinkampani eziningi zikapende noyinki zithenga izinto ezingavuthiwe ngesisindo ngasinye futhi zithengise imikhiqizo yazo ngevolumu.Njengoba i-TiO2 inokuminyana okuphezulu kakhulu, ρ ≈ 4 g/cm3, impahla eluhlaza inikela kakhulu enanini levolumu yesistimu.

Ukukhiqizwa kwe-TiO2 Pigment

Izinqubo ezimbalwa zisetshenziselwa ukukhiqiza umbala we-TiO2.I-Rutile TiO2 itholakala emvelweni.Lokhu kungenxa yokuthi i-rutile crystal structure iwuhlobo oluzinzile lwe-thermodynamically lwe-titanium dioxide.Ezinqubweni zamakhemikhali i-TiO2 yemvelo ingahlanzwa, ngaleyo ndlela ithole i-TiO2 yokwenziwa.I-pigment ingenziwa ngezinsimbi, ezicebile nge-titanium, ezimbiwa emhlabeni.

Izindlela zamakhemikhali ezimbili zisetshenziselwa ukwenza kokubili umbala we-rutile ne-anatase we-TiO2.

1.Enqubweni ye-sulfate, i-ore ecebile ye-titanium isabela nge-sulfuric acid, inikeza i-TiOSO4.I-TiO2 ehlanzekile itholakala ku-TiOSO4 ngezinyathelo ezimbalwa, ihamba nge-TiO(OH)2.Kuye ngekhemistri nomzila okhethiwe, i-rutile noma i-anatase titanium dioxide yenziwa.

2.Enqubweni ye-chloride, into yokuqala ecebile ye-titanium engahluziwe ihlanzwa ngokuguqula i-titanium ibe i-titanium tetrachloride (TiCl4) ngokusebenzisa igesi ye-chlorine (Cl2).I-titanium tetrachloride ibe i-oxidized ekushiseni okuphezulu, inikeze i-rutile titanium dioxide ehlanzekile.I-Anatase TiO2 ayenziwa ngenqubo ye-chloride.

Kuzo zombili izinqubo, ubukhulu bezinhlayiya ze-pigment kanye nokwelashwa ngemva kokwelashwa kulungiswa ngokulungisa kahle izinyathelo zokugcina emzileni wamakhemikhali.