Qhov sib txawv tseem ceeb ntawm zinc oxide thiab titanium dioxide yog zinc oxide (ZnO) yog qhov zoo dua UV absorber hla ntau lub wavelengths thaum piv rau titanium dioxide (TiO2).
Zinc oxide yog cov oxide ntawm zinc muaj cov tshuaj formula ZnO, whereas titanium dioxide yog cov oxide ntawm titanium muaj cov tshuaj formula TiO2 Ob lub zinc oxide thiab titanium dioxide yog inorganic. tshuaj sib xyaw. Ob lub tebchaw no yog xim dawb; yog li ntawd, nws yog ib qho nyuaj rau txheeb xyuas lawv cais tsuas yog saib lawv. Txawm li cas los xij, lawv muaj cov tshuaj lom neeg thiab lub cev sib txawv heev.
Zinc Oxide yog dab tsi?
Zinc oxide yog cov oxide ntawm zinc hlau, muaj cov tshuaj formula ZnO. Nws zoo nkaus li cov khoom dawb. Txawm li cas los xij, nws tshwm sim nyob rau hauv daim ntawv ntawm zincite. Tab sis feem ntau ntawm zinc oxide peb siv nyob rau hauv kev lag luam yog tsim synthetically. Muaj 3 txheej txheem rau qhov no: cov txheej txheem tsis ncaj (Fabkis txheej txheem), cov txheej txheem ncaj qha (cov txheej txheem Asmeskas) thiab cov txheej txheem ntub dej.
Daim duab 01: Zinc Oxide Appearance
Tsis tas li ntawd, cov khoom no yog insoluble hauv dej; yog li ntawd, nws yog ib qho tseem ceeb nyob rau hauv ntau daim ntawv thov. Piv txwv li, raws li ib tug additive ntawm roj hmab, yas, ceramic, iav, cement, lubricants, thiab lwm yam. Tsis tas li ntawd, zinc oxide kuj yog siv nyob rau hauv ceramic kev lag luam vim nws cov khoom muaj txiaj ntsig zoo li lub peev xwm kub, siab kub conductivity, thermal expansion thiab siab. melting point.
Ntxiv mus, zinc oxide crystallizes nyob rau hauv ob daim ntawv tseem ceeb: hexagonal qauv thiab cubic qauv. Mohs nplai hardness rau cov khoom no yog 4.5. Tsis tas li ntawd, nws yog amphoteric oxide. Txawm hais tias nws yog insoluble hauv dej, nws dissolves nyob rau hauv feem ntau acids. Qee zaum, cov khoom zinc oxide tuaj yeem yaj hauv alkalis thiab. Nws muab zincates soluble.
Titanium Dioxide yog dab tsi?
Titanium dioxide yog cov oxide ntawm titanium hlau, thiab nws muaj cov tshuaj formula TiO2. Nws zoo nkaus li cov khoom dawb thiab yog insoluble hauv dej. Tsis tas li ntawd, nws yog ib txwm tshwm sim oxide ntawm titanium hlau; Qhov no feem ntau tshwm sim hauv peb hom xws li ilmenite, rutile thiab anatase.
Daim duab 02: Titanium Dioxide tshwm sim
Nyob hauv cov txheej txheem tsim khoom, cov khoom siv feem ntau yog ilmenite. Rutile kuj tuaj yeem siv los ua qhov chaw, thiab peb tuaj yeem tau txais titanium dioxide los ntawm cov txheej txheem chloride. Qhov tseem ceeb tshaj, peb tuaj yeem hloov ilmenite mus rau qib xim titanium dioxide. Muaj ob txoj hauv kev rau qhov no: txheej txheem sulfate thiab txheej txheem chloride.
Ntxiv mus, titanium dioxide raws li cov xim yog cov ntawv tseem ceeb uas muaj kev siv dav. Nws yog vim nws brightness thiab siab refractive index. Peb tuaj yeem siv cov xim no los muab cov xim dawb thiab opacity rau xim, txheej, yas, ntawv, khoom noj, tshuaj, tshuaj txhuam hniav, thiab lwm yam. Tsis tas li ntawd, nws yog ib feem ntawm cov tshuaj pleev thaiv hnub vim nws muaj zog UV lub teeb absorbing peev xwm.
Qhov txawv ntawm Zinc Oxide thiab Titanium Dioxide yog dab tsi?
Zinc oxide yog cov oxide ntawm zinc muaj cov tshuaj formula ZnO, whereas titanium dioxide yog cov oxide ntawm titanium muaj cov tshuaj formula TiO2 Thaum xav txog cov tshuaj formula, zinc oxide. muaj ib qho oxygen atom rau ib lub hlau atom qhov twg titanium dioxide muaj ob lub atoms ntawm titanium atom.
Tsis tas li ntawd, qhov sib txawv tseem ceeb ntawm zinc oxide thiab titanium dioxide yog zinc oxide yog qhov zoo dua UV absorber hla ntau lub wavelengths, thaum titanium dioxide tsis yog ib qho zoo absorber ntawm UV rays vim nws UV nqus spectrum tsis yog dav.. Ntxiv mus, thaum xav txog toxicity thiab kev nyab xeeb, zinc yog cov ntxhia hauv cov khoom noj uas peb xav tau thaum titanium yog cov hlau hnyav hnyav; Yog li ntawd, zinc oxide muaj kev nyab xeeb dua li titanium dioxide. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm zinc oxide thiab titanium dioxide.
Summary – Zinc Oxide vs Titanium Dioxide
Zinc oxide thiab titanium oxide yog cov oxides ruaj khov tshaj plaws ntawm cov hlau zinc thiab titanium. Txawm li cas los xij, muaj qhov sib txawv ntawm zinc oxide thiab titanium dioxide, feem ntau ntawm lawv cov khoom. Zinc oxide yog ib qho zoo dua UV absorber hla ntau wavelengths thaum piv rau titanium dioxide. Ntxiv mus, zinc oxide muaj kev nyab xeeb ntau dua li titanium dioxide vim tias tom kawg yog cov hlau hnyav hnyav.
