Titanium Dioxide

Titanium dioxide (TiO2) yog xim dawb siv dav hauv ntau qhov kev lag luam vim nws cov khoom tshwj xeeb. Nov yog cov ntsiab lus ntawm titanium dioxide, nws cov khoom, thiab nws cov kev siv ntau yam:

1. Chemical Composition: Titanium dioxide yog ib txwm tshwm sim oxide ntawm titanium nrog cov tshuaj formula TiO2. Nws muaj nyob rau hauv ntau hom crystalline, nrog rutile thiab anatase yog cov feem ntau. Rutile TiO2 paub txog nws qhov siab refractive index thiab opacity, thaum anatase TiO2 nthuav tawm cov haujlwm zoo tshaj plaws photocatalytic.
2. Cov Pigment Dawb: Ib qho ntawm kev siv titanium dioxide yog cov xim dawb hauv cov xim, txheej, yas, thiab ntawv. Nws imparts brightness, opacity, thiab whiteness rau cov ntaub ntawv no, ua rau lawv visually txaus siab thiab txhawb lawv cov kev pab them nqi thiab nkaum hwj chim. Titanium dioxide nyiam dua lwm cov xim dawb vim nws qhov zoo tshaj plaws lub teeb-scattering zog thiab tsis kam mus rau discoloration.
3. UV Absorber thiab Sunscreen: Titanium dioxide yog dav siv los ua UV absorber hauv cov tshuaj pleev thaiv hnub thiab cov khoom pleev xim. Nws ua raws li cov tshuaj tiv thaiv lub cev los ntawm kev xav txog thiab cuam tshuam txog UV hluav taws xob, yog li tiv thaiv daim tawv nqaij los ntawm kev puas tsuaj xws li sunburn, kev laus ntxov ntxov, thiab mob qog noj ntshav. Nanoscale titanium dioxide feem ntau yog ua haujlwm hauv cov tshuaj pleev thaiv hnub rau lawv cov pob tshab thiab dav-spectrum UV tiv thaiv.
4. Photocatalyst: Qee cov ntaub ntawv ntawm titanium dioxide, tshwj xeeb tshaj yog anatase TiO2, nthuav tawm cov haujlwm photocatalytic thaum raug ultraviolet lub teeb. Cov cuab yeej no tso cai rau titanium dioxide rau catalyze ntau yam tshuaj tiv thaiv, xws li decomposition ntawm organic pollutants thiab sterilization ntawm qhov chaw. Photocatalytic titanium dioxide yog siv rau hauv cov txheej txheem ntxuav tus kheej, cov tshuab ua kom huv huv, thiab kev siv dej.
5. Khoom noj khoom haus Additive: Titanium dioxide tau pom zoo ua zaub mov ntxiv (E171) los ntawm cov koom haum tswj hwm xws li FDA thiab European Food Safety Authority (EFSA). Nws yog feem ntau siv rau hauv cov khoom noj khoom haus, xws li cov khoom qab zib, cov khoom ci, thiab cov khoom noj siv mis, ua cov tshuaj ntxuav hniav dawb thiab opacifier. Titanium dioxide pab txhim kho cov tsos thiab kev ntxhib los mos ntawm cov khoom noj, ua rau lawv pom kev txaus siab rau cov neeg siv khoom.
6. Kev them nyiaj yug Catalyst: Titanium dioxide ua haujlwm pab txhawb nqa hauv ntau cov txheej txheem tshuaj, suav nrog cov catalysis heterogeneous thiab kev kho ib puag ncig. Nws muab thaj chaw siab saum npoo thiab ruaj khov kev txhawb nqa rau cov chaw catalytic nquag, ua kom yooj yim rau cov tshuaj lom neeg muaj txiaj ntsig thiab ua kom muaj kuab paug. Titanium dioxide-txhawb catalysts yog ua hauj lwm nyob rau hauv daim ntawv thov xws li automotive kev kho mob, hydrogen ntau lawm, thiab kev kho dej khib nyiab.
7. Electroceramics: Titanium dioxide yog siv los tsim cov khoom siv hluav taws xob, xws li capacitors, varistors, thiab sensors, vim nws cov khoom dielectric thiab semiconductor. Nws ua raws li high-k dielectric cov ntaub ntawv nyob rau hauv capacitors, enabling cia ntawm hluav taws xob lub zog, thiab raws li ib tug gas-rhiab heev cov ntaub ntawv nyob rau hauv sensors rau ntes gases thiab volatile organic tebchaw.

Hauv cov ntsiab lus, titanium dioxide yog ntau yam khoom siv nrog ntau yam kev siv, suav nrog cov xim dawb, UV absorber, photocatalyst, khoom noj khoom haus, kev txhawb nqa catalyst, thiab electroceramic tivthaiv. Nws qhov tshwj xeeb ua ke ntawm cov khoom ua rau nws tseem ceeb hauv kev lag luam xws li xim thiab txheej, tshuaj pleev ib ce, kev kho ib puag ncig, khoom noj khoom haus, hluav taws xob, thiab kev kho mob.