Lub cev muaj zog ntawm rutile hom titanium dioxide

Coatings kev lag luam:
Rutile titanium dioxide, raws li ib qho ntawm ob hom tseem ceeb tshaj plaws ntawm titanium dioxide, yog cov xim dawb zoo nkauj nrog cov dispersibility siab, huab cua tsis kam, siab zais zis, thiab kev ruaj ntseg zoo. Nws yog dav siv nyob rau hauv sab hauv thiab sab nrauv phab ntsa latex xim, industrial coatings, composite inks, flexographic printing inks, laminated ntawv, yas masterbatch, hmoov coatings, thiab lwm yam. Yog li, dab tsi yog lub cev khoom ntawm rutile titanium dioxide?
01
txheeb ze ntom ntom
Cov txheeb ze ntom ntom ntawm titanium dioxide muaj feem xyuam rau nws cov siv lead ua morphology, particle loj, tshuaj muaj pes tsawg leeg, thiab tshwj xeeb tshaj yog tus nqi ntawm kev kho deg. Thaum lub sij hawm tsim khoom, nws nce nrog qhov nce ntawm calcination kub thiab ncua sij hawm calcination. Ntawm cov feem ntau siv cov xim dawb, titanium dioxide muaj qhov sib txawv tsawg tshaj plaws. Ntawm cov xim dawb ntawm qhov zoo ib yam, titanium dioxide muaj thaj tsam loj tshaj plaws thiab cov xim loj tshaj plaws. Tus txheeb ze ntom ntom ntawm rutile titanium dioxide yog 3.8-3.9g / cm3, thaum tus txheeb ze ntom ntom ntawm flake titanium dioxide yog 4.2-4.3g / cm3.
02
Melting point, boiling point
Txij li thaum ob qho tib si rutile thiab flake titanium dioxide yuav hloov mus rau hauv rutile ntawm qhov kub thiab txias, lawv cov ntsiab lus melting thiab boiling point tsis muaj nyob. Lub melting point ntawm rutile titanium dioxide yog inconsistent nyob rau hauv ntau yam ntaub ntawv, thiab feem ntau ntseeg tau hais tias nyob rau hauv 1800 thiab 1875 degree. Cov ntaub ntawv qhia tias lub melting point nyob rau hauv huab cua yog 1830 ± 15 degree, thiab nyob rau hauv oxygen - nplua nuj tej yam kev mob nws yog 1879 ± 15℃. Lub melting point yog txuam nrog purity ntawm titanium dioxide. Kub taw tes ntawm rutile titanium dioxide yog (3200 ± 300)K.
03
Dielectric tsis tu ncua
Vim lub siab dielectric tas li ntawm titanium dioxide, nws muaj hluav taws xob zoo heev. Nyob rau hauv qhov kev txiav txim ntawm ib qho hluav taws xob sab nraud, ions cuam tshuam nrog ib leeg los ua ib qho chaw muaj zog heev hauv cheeb tsam hauv hluav taws xob. Nyob rau hauv qhov kev txiav txim ntawm qhov chaw hluav taws xob sab hauv, sab nrauv electron orbits ntawm ions yog deformed, thiab cov ions lawv tus kheej kuj tseem txav chaw.
Cov kab impurities muaj nyob rau hauv daim ntawv titanium dioxide siv lead ua muaj qhov cuam tshuam tseem ceeb ntawm dielectric tas li. Lub dielectric tas li ntawm hom rutile sib txawv nrog cov kev taw qhia ntawm titanium dioxide siv lead ua: thaum uas tig mus rau C axis, nws qhov dielectric tas li ntsuas yog 180; thaum nws nyob ntawm txoj cai kaum, nws yog 90; Qhov nruab nrab tus nqi ntawm nws cov hmoov yog 114. Lub dielectric tas li ntawm rutile titanium dioxide tsuas yog 48.
04
Kev coj ua
Titanium dioxide muaj cov khoom siv hluav taws xob semiconductor, thiab nws cov conductivity nce sai nrog qhov kub thiab txias, thiab nws kuj tseem ceeb heev rau oxygen deficiency. Rutile titanium dioxide tseem yog ib qho insulator ntawm 20 degree, tab sis thaum rhuab mus rau 420 degree, nws conductivity nce 107 zaug; cov conductivity ntawm stoichiometric titanium dioxide (TiO2) yog tsawg dua 10-10s / m, thiab thaum me me ntawm cov pa ploj, cov conductivity ntawm TiO2 xws li TiO2 1.9995 tuaj yeem ncav cuag 10-1s / m. Kev lag luam hluav taws xob feem ntau siv cov dielectric tas li thiab semiconductor cov khoom ntawm rutile titanium dioxide los tsim cov khoom siv hluav taws xob xws li ceramic capacitors.
05
Hardness
Yog tias 10-point Mohs hardness tester (uas tsuas yog sawv cev rau qib hardness ntawm ntau cov muaju, tsis yog lawv qhov tseeb proportions) yog siv los ntsuas qhov hardness ntawm rutile titanium dioxide yog 5.5-6.0, thiab hardness ntawm non-rutile titanium dioxide yog 6-7. Hardness muaj feem xyuam rau cov qauv siv lead ua ntawm titanium dioxide, thiab hauv kev tsim khoom nws kuj muaj feem xyuam rau purity thiab calcination kub ntawm cov khoom. Sintering yog ib qho yooj yim tshwm sim ntawm qhov kub thiab txias, thiab hardness nce raws li. Nws yog precisely vim hais tias rutile titanium dioxide muaj siab hardness thiab tsis yooj yim rau crush, thiab muaj ib tug siab coj tus nqi ntawm spinneret qhov thiab rollers, uas nws tsis haum rau tshuaj fiber ntau matting thiab gravure printing.
06
Hygroscopicity
Txawm hais tias titanium dioxide yog hydrophilic, nws hygroscopicity tsis muaj zog heev, thiab hygroscopicity ntawm rutile yog me ntsis ntau dua li ntawm rutile. Lub hygroscopicity ntawm titanium dioxide muaj feem xyuam rau cov khoom ntawm tus neeg saib xyuas kev kho mob thaum lub sij hawm kho deg, thiab kuj rau qhov loj ntawm nws qhov chaw tshwj xeeb. Titanium dioxide nrog thaj chaw loj tshwj xeeb kuj muaj me ntsis hygroscopicity.
07
Thermal stability
Titanium dioxide yog ib qho thermally ruaj khov compound. Thaum tshav kub kub hauv lub tshuab nqus tsev, me ntsis deoxidation cov tshuaj tiv thaiv yuav tshwm sim, nrog rau xim xiav tsaus. Cov tshuaj tiv thaiv no yog thim rov qab thiab yuav rov qab mus rau nws cov xim dawb tom qab txias.
Cov saum toj no yog cov khoom ntawm lub cev ntawm rutile titanium dioxide uas peb tau teev tseg rau koj. Koj tuaj yeem xa daim foos hauv qab no kom tau txais cov ntaub ntawv kev lag luam ntau ntxiv uas peb muab rau koj.