Graphite hmoov yog ib hom hmoov zoo cov khoom ua los ntawm cov pa roj carbon tom qab high-temperature pyrolysis los yog carbonization, thiab nws cov khoom tseem ceeb yog carbon.Graphite hmoov muaj cov txheej txheem tshwj xeeb, uas yog grey dub lossis lub teeb dub.Nws qhov hnyav molecular yog 12.011.
Cov yam ntxwv ntawm graphite hmoov tuaj yeem ua tiav raws li hauv qab no:
1. High conductivity thiab thermal conductivity: graphite hmoov yog ib tug zoo conductive thiab thermal conductivity khoom, nrog high thermal conductivity thiab conductivity.Qhov no feem ntau yog vim qhov nruj nruj thiab txheej txheej txheej ntawm carbon atoms hauv graphite, uas ua rau nws yooj yim rau electrons thiab cua sov ua.
2. Zoo tshuaj inertness: graphite hmoov muaj tshuaj zoo stability thiab inertness nyob rau hauv ib txwm tej yam kev mob, thiab tsis hnov mob nrog ntau yam tshuaj.Qhov no kuj yog vim li cas graphite hmoov yog siv dav hauv cov khoom siv hluav taws xob thiab tshuaj lom neeg, kub kub tiv thaiv corrosion, thiab lwm yam.
3. Nws muaj qee yam khoom siv dag zog: piv nrog lwm cov khoom siv nano, graphite hmoov muaj kev cuam tshuam ntau dua, extrusion kuj thiab tawg tsis kam, uas tuaj yeem txhim kho cov khoom siv ntawm cov khoom siv rau qee yam.
Cov txheej txheem kev npaj ntawm graphite hmoov yog ntau yam, thiab cov txheej txheem ntau yog raws li hauv qab no:
1. Pyrolysis ntawm qhov kub thiab txias: tshav kub ntuj graphite los yog chemically synthesized graphite siv lead ua kom kub (siab tshaj 2000 ℃) kom decompose nws mus rau hauv graphite hmoov.
2. High-temperature carbonization method: graphite hmoov yog tau los ntawm cov tshuaj tiv thaiv ntawm graphite nrog raw cov ntaub ntawv nrog txheej txheej zoo li graphite.Raws li cov ntaub ntawv sib txawv, nws tuaj yeem muab faib ua ntau hom kev npaj, xws li vapor chemical vapor deposition, pyrolysis thiab carbonization.
3. Mechanical method: los ntawm kev sib tsoo tshuab thiab kev tshuaj ntsuam xyuas, cov khoom siv graphite lossis hluavtaws graphite tau ua tiav kom tau txais graphite hmoov.
Cov kev npaj sib txawv muaj qhov sib txawv ntawm qhov zoo, purity thiab morphology ntawm graphite hmoov.Hauv kev siv cov tswv yim, cov kev npaj tsim nyog yuav tsum raug xaiv raws li cov kev xav tau sib txawv.
1. Cov khoom siv hluav taws xob thiab tshuaj lom neeg: graphite hmoov tuaj yeem npaj rau hauv cov khoom siv hluav taws xob thiab thermal conductive polymer sib xyaw, uas yog siv rau hauv cov khoom siv hluav taws xob, roj teeb, inks conductive thiab lwm yam.Piv txwv li, nyob rau hauv cov ntaub ntawv electrode, graphite hmoov tuaj yeem ua rau cov khoom siv hluav taws xob nce ntxiv, txhim kho cov khoom siv hluav taws xob ntawm electrode, thiab txuas ntxiv lub neej kev pab cuam ntawm lub roj teeb.
2. Cov ntaub ntawv txheej: graphite hmoov tuaj yeem siv rau kev npaj cov txheej txheem ntau yam, xws li tshuaj tiv thaiv corrosion, thermal conductivity txheej, electromagnetic shielding txheej, thiab lwm yam. Nyob rau hauv lub tsheb, aircraft, kev tsim kho, thiab lwm yam., cov coatings npaj. nrog graphite hmoov tuaj yeem txhim kho ultraviolet tsis kam thiab corrosion kuj ntawm cov ntaub ntawv.
3. Catalyst: Graphite hmoov tuaj yeem siv rau kev npaj cov catalyst, thiab siv dav hauv cov organic synthesis, tshuaj lom neeg thiab lwm yam kev lag luam.Piv txwv li, nyob rau hauv hydrogenation ntawm zaub roj, graphite hmoov tom qab kev kho mob yuav siv tau raws li ib tug catalyst los txhim kho cov tshuaj tiv thaiv selectivity thiab yield.
4. Cov ntaub ntawv ceramic: Hauv kev npaj cov ntaub ntawv ceramic, graphite hmoov tuaj yeem txhim kho nws cov khoom siv dag zog thiab lwm yam khoom los ntawm kev ua kom muaj zog.Tshwj xeeb tshaj yog nyob rau hauv cermets thiab porous ceramics, graphite hmoov yog dav siv.
