Dab tsi yog cov khoom zoo ntawm nthuav graphite

Dab tsi yog cov khoom zoo ntawm nthuav graphite

1, Mechanical Function:
1.1High compressibility thiab resilience: rau cov khoom lag luam graphite nthuav dav, tseem muaj ntau qhov chaw kaw me me uas tuaj yeem ua kom nruj raws li qhov kev txiav txim ntawm sab nraud quab yuam. Nyob rau tib lub sijhawm, lawv muaj kev ua haujlwm tsis zoo vim qhov nro ntawm huab cua hauv qhov chaw qhib me me.
1.2Yooj yim: lub hardness yog tsawg heev. Nws tuaj yeem txiav nrog cov cuab yeej zoo tib yam, thiab tuaj yeem raug mob thiab khoov arbitrarily;
2, Lub cev thiab tshuaj ua haujlwm:
2.1 Purity: cov ntsiab lus ntawm cov pa roj carbon monoxide yog li 98%, lossis ntau tshaj 99%, uas yog txaus kom ua tau raws li qhov yuav tsum tau ua.siab purityseals hauv lub zog thiab lwm yam kev lag luam;
2. Ceev: lubqhov ntom ntomntawm flake graphite yog 1.08g / cm3, qhov ceev ntawm nthuav graphite yog 0.002 ~ 0.005g / cm3, thiab cov khoom ceev yog 0.8 ~ 1.8g / cm3. Yog li ntawd, cov khoom siv graphite nthuav dav yog lub teeb thiab yas;
3. Kub tiv taus: theoretically, qhov nthuav graphite tuaj yeem tiv taus - 200 ℃ to 3000 ℃. Raws li kev ntim khoom ntim, nws tuaj yeem siv nyab xeeb ntawm - 200 ℃ ~ 800 ℃. Nws muaj cov haujlwm zoo heev ntawm tsis muaj embrittlement, tsis muaj kev laus ntawm qhov kub thiab txias, tsis muaj softening, tsis deformation thiab tsis decomposition ntawm kub kub;
4. Corrosion kuj: nws muaj chemical laziness. Ntxiv rau qee qhov tshwj xeeb kub ntawm cov oxidants muaj zog xws li aqua regia, nitric acid, sulfuric acid thiab halogen, nws tuaj yeem siv rau feem ntau cov xov xwm xws li kua qaub, alkali, ntsev tov, dej hiav txwv, chav dej thiab cov organic hnyav;
5. Zoo heev thermal conductivitythiab me me thermal expansion coefficient. Nws cov tsis muaj nyob ze rau tib qhov kev txiav txim ntawm qhov loj ntawm cov ntaub ntawv ob feem ntawm cov khoom siv sib khi dav dav. Nws kuj tseem tuaj yeem raug kaw zoo nyob rau hauv kev ua haujlwm ntawm qhov kub thiab txias, kev hloov pauv ntawm qhov kub thiab txias;
6. Radiation tiv thaive: raug rau neutron rays γ Ray α Ray β X-ray irradiation ntev ntev yam tsis muaj kev hloov pauv;
7. Impermeability: zoo impermeability rau roj thiab kua. Vim lub zog loj ntawm cov graphite nthuav dav, nws yog ib qho yooj yim los tsim cov roj av nyias nyias los yog kua zaj duab xis los cuam tshuam qhov nruab nrab nkag;
8. Self lubrication: qhov nthuav graphite tseem tuav lub dav hlau hexagonal txheej txheej. Nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam, lub dav hlau khaubncaws sab nraud povtseg yog ib qho yooj yim rau swb kuj thiab nws tus kheej lubrication tshwm sim, uas muaj peev xwm tiv thaiv kom txhob hnav ntawm ncej los yog valve pas nrig.