Lub cev muaj zog ntawm Titanium Dioxide (TiO₂)

Titanium dioxide, tseem hu ua titanium (IV) oxide los yog titania, yog ib txwm tshwm sim oxide ntawm titanium nrog cov tshuaj formula TiO₂. Nws yog ib qho ntawm ntau yam khoom siv thiab siv dav hauv ntau qhov kev lag luam vim nws lub cev tshwj xeeb. Kab lus no yog tsim los muab cov ntsiab lus dav dav ntawm lub cev lub cev ntawm titanium dioxide.

1. Cov tsos thiab xim

Titanium dioxide yog dawb, opaque khoom ntawm chav tsev kub. Nws lub siab refractive Performance index thiab muaj zog tawg ntawm lub teeb ua rau nws whiteness thiab opacity, ua rau nws ib tug zoo heev pigment rau xim, coatings, plastics, thiab ntawv.

2. Ceev ceev

Qhov ceev ntawm titanium dioxide txawv nyob ntawm nws daim ntawv crystalline. Feem ntau cov qauv yog:

- Rutile: Daim ntawv ntom ntom nrog qhov ntom ntawm kwv yees li 4.23 g / cm³.
- Anatase: Tsawg dua li rutile, nrog qhov ceev ntawm 3.89 g / cm³.
- Brookite: Daim ntawv tsawg tshaj plaws, nrog qhov ceev ntawm ib ncig ntawm 4.13 g / cm³.

3. Cov ntsiab lus melting thiab boiling

Titanium dioxide muaj cov ntsiab lus melting siab heev, uas yog kwv yees li 1843℃(3349℃F). Nws qhov kub kub yog siab dua, kwv yees li ntawm 2972 ​​degree (5380℃F). Cov kub kub no ua rau titanium dioxide haum rau cov ntawv thov uas xav tau thermal stability.

4. Cov qauv siv lead ua

Titanium dioxide tuaj yeem muaj nyob hauv ntau daim ntawv crystalline, txhua tus muaj lub cev sib txawv:

- Rutile: Daim ntawv ruaj khov tshaj plaws, tus cwj pwm los ntawm cov qauv siv lead ua tetragonal. Nws muaj ib tug siab refractive index thiab zoo heev tshuaj stability.
- Anatase: Ib daim ntawv metastable nrog cov qauv siv lead ua tetragonal. Nws yog tsawg ntom thiab muaj qhov qis qis dua qhov ntsuas piv rau rutile.
- Brookite: Daim ntawv tsis tshua muaj, nrog cov qauv siv lead ua orthorhombic. Nws tsis tshua pom muaj nyob hauv cov xwm txheej thiab muaj kev txwv kev siv.

5. Hardness

Titanium dioxide kuj nyuaj, nrog rau Mohs hardness txog 6 rau anatase thiab 6-7 rau rutile. Cov cuab yeej no ua rau nws muaj txiaj ntsig zoo li cov khoom siv abrasive hauv qee yam kev siv.

6. Hluav taws xob conductivity

Nyob rau hauv nws daim ntawv ntshiab, titanium dioxide yog ib qho insulator. Txawm li cas los xij, thaum doped nrog qee cov ntsiab lus, nws tuaj yeem pom cov khoom semiconducting. Cov yam ntxwv no yog siv nyob rau hauv ntau yam khoom siv hluav taws xob thiab cov sensors.

7. Optical Properties

Titanium dioxide muaj cov khoom siv kho qhov muag zoo heev, suav nrog qhov ntsuas qhov ntsuas siab siab thiab lub teeb muaj zog - muaj peev xwm tawg. Cov khoom no ua rau nws cov xim zoo tagnrho rau kev tsim cov xim ci, xim dawb hauv cov xim, txheej, thiab cov yas. Tsis tas li ntawd, nws muaj peev xwm nqus tau thiab tawg lub teeb ultraviolet (UV) ua rau nws muaj cov khoom tseem ceeb hauv cov tshuaj pleev thaiv hnub thiab lwm yam UV- cov khoom tiv thaiv.

8. Qhov chaw saum npoo av

Qhov chaw saum npoo ntawm titanium dioxide tuaj yeem sib txawv heev nyob ntawm lawv qhov loj thiab cov duab. Nanoparticles ntawm titanium dioxide muaj thaj tsam loj dua piv rau cov khoom loj dua, uas tuaj yeem cuam tshuam rau lawv cov reactivity thiab kev ua tau zoo hauv ntau yam kev siv.

9. Kev ruaj ntseg

Titanium dioxide yog tshuaj ruaj khov thiab tiv taus ntau cov kua qaub thiab alkalis. Txawm li cas los xij, nws tuaj yeem ua rau muaj zog acids thiab cov hauv paus hauv qee yam mob. Nws ruaj khov ua rau nws haum rau siv nyob rau hauv ib puag ncig hnyav thiab ntev - daim ntawv thov.

10. Solubility

Titanium dioxide yog insoluble hauv dej thiab feem ntau cov organic solvents. Txawm li cas los xij, nws tuaj yeem tawg mus rau hauv ntau yam xov xwm uas siv cov surfactants lossis lwm cov tshuaj tua kab mob. Cov cuab yeej no yog qhov tseem ceeb rau nws siv hauv cov xim, coatings, thiab lwm yam formulations.

Xaus

Titanium dioxide yog ib qho khoom siv zoo kawg nkaus nrog ntau yam khoom siv lub cev uas ua rau nws muaj nuj nqis hauv ntau daim ntawv thov. Los ntawm nws qhov siab refractive Performance index thiab lub teeb muaj zog- tawg muaj peev xwm rau nws cov thermal stability thiab tshuaj tiv thaiv, titanium dioxide tseem ua lub luag haujlwm tseem ceeb hauv kev lag luam xws li xim, coatings, plastics, ntawv, thiab tshuaj pleev ib ce. Nkag siab txog cov khoom siv lub cev no yog qhov tseem ceeb rau kev ua kom zoo dua nws siv hauv ntau daim ntawv thov thiab tsim cov thev naus laus zis tshiab.