Graphite yog ib yam khoom tshwj xeeb thiab tshwj xeeb uas muaj cov khoom siv thermal conductivity zoo kawg li.The thermal conductivity ntawm graphite nce nrog qhov nce ntawm qhov kub thiab txias, thiab nws cov thermal conductivity tuaj yeem ncav cuag 1500-2000 W / (mK) ntawm chav tsev kub, uas yog li 5 zaug. ntawm tooj liab thiab ntau tshaj 10 npaug ntawm cov hlau txhuas.
Thermal conductivity yog hais txog lub peev xwm ntawm cov khoom siv los ua cua sov.Nws yog ntsuas nyob rau hauv cov nqe lus ntawm yuav ua li cas sai sai cua sov mus los ntawm ib yam khoom.Graphite, ib daim ntawv tshwm sim ntawm cov pa roj carbon, muaj ib qho ntawm cov thermal conductivity siab tshaj plaws ntawm txhua yam ntaub ntawv paub.Nws nthuav tawm tshwj xeeb thermal conductivity nyob rau hauv cov kev taw qhia perpendicular mus rau nws cov khaubncaws sab nraud povtseg, ua rau nws ib tug zoo tagnrho cov ntaub ntawv rau ntau daim ntaub ntawv.
Graphite qauvmuaj cov txheej txheem ntawm carbon atoms teem rau hauv hexagonal lattice.Nyob rau hauv txhua txheej, carbon atoms yog tuav ua ke los ntawm muaj zog covalent bonds.Txawm li cas los xij, kev sib raug zoo ntawm cov khaubncaws sab nraud povtseg, hu ua Van der Waals rog, kuj tsis muaj zog.Nws yog kev npaj ntawm carbon atoms nyob rau hauv cov khaubncaws sab nraud povtseg uas muab graphite nws tshwj xeeb thermal conductivity zog.
Lub thermal conductivity ntawm graphite feem ntau yog vim nws cov ntsiab lus carbon siab thiab cov qauv siv lead ua tshwj xeeb.Cov pa roj carbon-carbon bonds nyob rau hauv txhua txheej tso cai rau cov cua sov hloov tau yooj yim hauv lub dav hlau ntawm txheej. Los ntawm cov tshuaj formular ntawm graphite, peb tuaj yeem nkag siab txog qhov tsis muaj zog ntawm cov txheej txheem ua rau nws ua tau rau phonons (lub zog vibrational) mus sai. dhau ntawm txoj kab.
Lub siab thermal conductivity ntawm graphite tau ua rau nws siv dav hauv ntau yam lag luam.
I: Kev tsim cov graphite electrode.
Graphite yog ib qho ntawm cov ntaub ntawv tseem ceeb raumanufacturing graphite electrode, uas muaj qhov zoo ntawm cov thermal conductivity, kub tsis kam, zoo tshuaj stability, siab mechanical zog, yog li nws yog dav siv nyob rau hauv metallurgy, tshuaj lom neeg kev lag luam, hluav taws xob fais fab thiab lwm yam industries nyob rau hauv lub electrolytic thiab hluav taws xob rauv txheej txheem.
II: Graphite yog siv nyob rau hauv lub teb ntawm electronics.
Graphite yog siv los ua cov khoom siv hluav taws xob los ua kom cov cua sov uas tsim los ntawm cov khoom siv hluav taws xob xws li transistors, kev sib koom ua ke, thiab cov khoom siv hluav taws xob.Nws lub peev xwm los hloov cov cua sov kom deb ntawm cov cuab yeej no pab tswj kev ruaj ntseg thiab tiv thaiv overheating.
III: graphite yog siv rau hauv kev tsim khoom ntawmcruciblesthiab pwm rau hlau casting.
Nws cov thermal conductivity siab tso cai rau kev hloov hluav taws xob zoo, ua kom cov cua sov tsis sib xws thiab txias ntawm cov hlau.Qhov no, nyob rau hauv lem, txhim kho qhov zoo thiab sib xws ntawm cov khoom kawg.
IV: Graphite thermal conductivity yog siv hauv kev lag luam aerospace.
Graphite composites yog siv nyob rau hauv kev tsim kho ntawm aircraft thiab spacecraft Cheebtsam.Qhov tshwj xeeb ntawm cov khoom siv hluav taws xob hloov hluav taws xob ntawm graphite pab tswj qhov kub thiab txias uas tau ntsib thaum lub sijhawm ua haujlwm hauv chaw ua haujlwm thiab kev kub ceev.
V: Graphite yog siv los ua cov roj nplua nyeem hauv ntau qhov kev lag luam.
Nws yog feem ntau siv rau hauv kev tsim cov txheej txheem uas muaj qhov kub thiab txias, xws li cov cav tsheb thiab cov tshuab hlau ua haujlwm.Lub peev xwm ntawm graphite tuaj yeem tiv taus qhov kub thiab txias thaum txo kev sib txhuam ua rau nws yog ib qho zoo tagnrho lubricant rau cov ntawv thov.
VI: Graphite yog siv rau hauv kev tshawb fawb tshawb fawb.
Nws yog feem ntau siv los ua cov khoom siv rau kev ntsuas thermal conductivity ntawm lwm yam khoom.Qhov zoo-tsim thermal conductivity qhov tseem ceeb ntawm graphite ua qhov taw qhia rau kev sib piv thiab ntsuas cov khoom siv hluav taws xob sib txawv ntawm cov khoom sib txawv.
Hauv kev xaus, graphite thermal conductivity yog qhov tshwj xeeb vim nws cov qauv siv lead ua tshwj xeeb thiab cov ntsiab lus carbon siab.Nws lub peev xwm los hloov cov cua sov kom zoo tau ua rau nws tseem ceeb hauv ntau yam lag luam, suav nrog hluav taws xob, hlau casting, aerospace, thiab lubrication.Ntxiv mus, graphite ua haujlwm raws li cov khoom siv ntsuas ntsuas thermal conductivity ntawm lwm yam khoom.Los ntawm kev nkag siab thiab siv qhov tshwj xeebcov khoom ntawm graphite, peb tuaj yeem tshawb xyuas cov ntawv thov tshiab thiab kev nce qib hauv kev hloov pauv cua sov thiab kev tswj xyuas thermal.
Post lub sij hawm: Aug-06-2023