Graphite Properties-Matenthedwe Conductivity

Graphite ndi chinthu chapadera komanso chapadera chomwe chimakhala ndi zinthu zochititsa chidwi zamatenthedwe. The matenthedwe madutsidwe a graphite kumawonjezeka ndi kuwonjezeka kutentha, ndi madutsidwe ake matenthedwe madutsidwe akhoza kufika 1500-2000 W / (mK) kutentha firiji, amene ali pafupifupi 5 nthawi kuti zamkuwa komanso nthawi zopitilira 10 kuposa aluminiyumu yachitsulo.

Thermal conductivity imatanthawuza kuthekera kwa chinthu kuchititsa kutentha.Amayesedwa potengera momwe kutentha kumayendera mwachangu mu chinthu.Graphite, mtundu wopangidwa mwachilengedwe wa kaboni, uli ndi imodzi mwazinthu zotenthetsera kwambiri pakati pa zida zonse zodziwika.Imawonetsa kuwongolera kwapadera kwamafuta komwe kumayenderana ndi zigawo zake, ndikupangitsa kuti ikhale yabwino kwazinthu zambiri.

Mapangidwe a graphiteimakhala ndi zigawo za maatomu a carbon opangidwa mu nthiti ya hexagonal.Mu gawo lirilonse, ma atomu a carbon amagwiridwa pamodzi ndi zomangira zolimba.Komabe, mgwirizano pakati pa zigawo, zomwe zimadziwika kuti mphamvu za Van der Waals, ndizochepa.Ndiko kupangidwa kwa maatomu a kaboni mkati mwa zigawo izi komwe kumapangitsa graphite kukhala ndi mawonekedwe ake apadera amafuta.

The matenthedwe madutsidwe wa graphite makamaka chifukwa cha mkulu mpweya wake ndi wapadera magalasi kapangidwe.Zomangira za carbon-carbon mkati mwa gawo lililonse zimalola kutentha kusuntha mosavuta mu ndege ya wosanjikiza.Kuchokera ku mankhwala opangidwa ndi graphite, tikhoza kumvetsetsa mphamvu zofooka zapakati-wosanjikiza zimapangitsa kuti ma phononi (vibrational energy) aziyenda mofulumira. kupyolera mu latisi.

The mkulu matenthedwe madutsidwe graphite kwachititsa kuti ntchito kwambiri m'mafakitale osiyanasiyana.

I: Kupanga ma elekitirodi a graphite.

Graphite ndi imodzi mwazinthu zofunika kwambirikupanga graphite electrode, yomwe ili ndi ubwino wa matenthedwe apamwamba, kutentha kwapamwamba, kukhazikika kwa mankhwala, mphamvu zamakina apamwamba, choncho amagwiritsidwa ntchito kwambiri muzitsulo, makampani opanga mankhwala, mphamvu zamagetsi ndi mafakitale ena mu electrolytic ndi ng'anjo yamagetsi.

II: Graphite imagwiritsidwa ntchito pazinthu zamagetsi.

Graphite imagwiritsidwa ntchito ngati zida zoyatsira kutentha kuti zichotse kutentha komwe kumapangidwa ndi zida zamagetsi monga ma transistors, ma frequency ophatikizika, ndi ma module amphamvu.Kuthekera kwake kusamutsa kutentha kutali ndi zida izi kumathandiza kuti pakhale bata komanso kupewa kutenthedwa.

III: graphite imagwiritsidwa ntchito popangazitsulondi nkhungu zopangira zitsulo.

Kutentha kwake kwapamwamba kumapangitsa kuti kutentha kutheke bwino, kuonetsetsa kuti kutentha kwa yunifolomu ndi kuzizira kwachitsulo.Izi, nazonso, zimathandizira kukhazikika komanso kusasinthika kwa chinthu chomaliza.

IV: Graphite thermal conductivity imagwiritsidwa ntchito pazamlengalenga.

Ma graphite composites amagwiritsidwa ntchito popanga zida za ndege ndi zakuthambo.Kutentha kwapadera kwa ma graphite kumathandizira kuwongolera kutentha kwambiri komwe kumachitika paulendo wapamlengalenga komanso maulendo apandege othamanga kwambiri.

V: Graphite imagwiritsidwa ntchito ngati mafuta m'mafakitale osiyanasiyana.

Amagwiritsidwa ntchito kwambiri popanga momwe kutentha ndi kupanikizika kumakhudzidwa, monga injini zamagalimoto ndi makina opangira zitsulo.Kutha kwa graphite kupirira kutentha kwakukulu ndikuchepetsa kukangana kumapangitsa kuti ikhale mafuta abwino opangira zinthu ngati izi.

VI: Graphite imagwiritsidwa ntchito pofufuza zasayansi.

Nthawi zambiri amagwiritsidwa ntchito ngati chinthu choyezera kutenthetsa kwazinthu zina.Zomwe zimakhazikitsidwa bwino za matenthedwe amtundu wa graphite zimakhala ngati malo ofananirako ndikuwunika kutentha kwazinthu zosiyanasiyana.

Pomaliza, matenthedwe a graphite ndi apadera chifukwa cha mawonekedwe ake apadera a kristalo komanso kuchuluka kwa kaboni.Kutha kwake kusamutsa bwino kutentha kwapangitsa kuti ikhale yofunikira m'mafakitale osiyanasiyana, kuphatikiza zamagetsi, zoponya zitsulo, zakuthambo, ndi mafuta.Komanso, graphite imagwira ntchito ngati benchmark zinthu zoyezera matenthedwe matenthedwe azinthu zina.Mwa kumvetsetsa ndi kugwiritsa ntchito mwapaderakatundu wa graphite, titha kupitiriza kufufuza ntchito zatsopano ndi kupita patsogolo m'munda wa kutentha kwa kutentha ndi kayendetsedwe ka kutentha.