Taw qhia ntawm graphite saj zawg zog xav

Kev kub siab graphite muaj cov khoom ntawm lub teeb yuag, kev cuam tshuam zoo, cov ntsiab lus carbon siab,kub tsis kam, tsis muaj volatilization ntawm qhov kub thiab txias,corrosion kuj, me methermal conductivitythiab siab zoo khaws cia.

Cov khoom lag luam muaj qhov zoo hauv qab no: tom qab 1800 ~ 2500 ℃ kub kho, qhov kub sib txawv ntawm ob lub ntsiab lus ntawm kev xav tsis ntau tshaj 50 ℃, yog li cov khoom ua haujlwm ruaj khov. Vim tias nws yog ib qho kev tsim khoom tas mus li, nws tuaj yeem ua kom muaj qhov sib xws ntawm cov khoom siv hauv txhua qhov dav thiab ntev.

Piv nrogcarbon xavkho ntawm qhov kub thiab txias (qis dua 900 ℃), graphite xav tau kho ntawm qhov kub thiab txias (siab tshaj 2200 ℃) muaj qhov zoo hauv qab no:

(1) Lub adsorption ntawm dej vapor thiab lwm yam gases ntawm graphite xav yog 2 txiav txim ntawm magnitude qis dua li cov pa roj carbon monoxide kho ntawm qhov kub thiab txias. Rau ntau lub nkoj kaw cov khoom siv uas yuav tsum tau nqus, qhov purity ntawm huab cua yog qhov tseem ceeb. Txawm li cas los xij, vim qhov siab adsorption ntawm qhov kub thiab txias kho cov pa roj carbon zoo, nws nyuaj rau nqus cov hlab ntsha.

(2) Cov graphite xav tau muaj zog thermal oxidation tsis kam. Cov qauv ntawm cov pa roj carbon tsis muaj graphitization yog ib hom kev tsis sib haum xeeb txheej txheej. Lub hav zoov ntawm ntau yam qauv tsis xws luag ua rau nws cov txheej txheem sib nrug loj dua, thiab nws yooj yim rau kev tawm tsam los ntawm oxygen atoms thiab oxidized. Lub lattice zoo meej thiab xaj peb-dimensional kev npaj ntawm graphite xav tau tom qab kev kho kub kub zoo heev txo cov txheej txheem thiab ua rau nws tsis yooj yim rau kev tawm tsam los ntawm oxygen atoms, yog li txhim kho lub peev xwm antioxidant.

(3) Lub purity ntawm graphite muaj siab, thiab cov ntsiab lus carbon yog ntau tshaj 99.5%. Cov ntsiab lus ntawm cov pa roj carbon uas tsis tshua muaj kev kho cov pa roj carbon zoo yog feem ntau tsawg dua 93%, uas yooj yim ua rau muaj kuab paug ib puag ncig hauv qhov cub.

Nyob rau hauv ib lo lus, qhov kub thiab txias kho graphite xav tau zoo dua thiab kev pab lub neej ntev dua li cov pa roj carbon tsawg.