Zomwe zili zabwino kwambiri za graphite yowonjezera

Zomwe zili zabwino kwambiri za graphite yowonjezera

1. Zimango ntchito:
1.1High compressibility ndi kupirira: pazowonjezera zopangira ma graphite, pali malo ambiri otsekedwa ang'onoang'ono otseguka omwe amatha kumizidwa ndi mphamvu yakunja. Panthawi imodzimodziyo, amakhala ndi mphamvu chifukwa cha kugwedezeka kwa mpweya m'malo ang'onoang'ono otseguka.
1.2Kusinthasintha: kuuma ndi kochepa kwambiri. Ikhoza kudulidwa ndi zida wamba, ndipo ikhoza kuvulazidwa ndi kupindika mosasamala;
2. Ntchito zakuthupi ndi zamankhwala:
2.1 Chiyero: zomwe zili ndi mpweya wokhazikika ndi pafupifupi 98%, kapena kuposa 99%, zomwe ndizokwanira kukwaniritsa zofunikira zachiyero chapamwambazisindikizo mu mphamvu ndi mafakitale ena;
2. Kachulukidwe: akachulukidwe kachulukidwewa flake graphite ndi 1.08g/cm3, kachulukidwe chochulukira cha graphite kukodzedwa ndi 0.002 ~ 0.005g/cm3, ndipo kachulukidwe mankhwala ndi 0.8 ~ 1.8g/cm3. Choncho, kukodzedwa graphite zakuthupi ndi kuwala ndi pulasitiki;
3. Kutentha kukana: Theoretically, ndi kukodzedwa graphite akhoza kupirira - 200 ℃ mpaka 3000 ℃. Monga chisindikizo chonyamula, chingagwiritsidwe ntchito mosamala pa - 200 ℃ ~ 800 ℃. Lili ndi ntchito zabwino kwambiri zopanda embrittlement, palibe ukalamba pa kutentha otsika, palibe kufewetsa, palibe mapindikidwe ndipo palibe kuwonongeka pa kutentha;
4. Kukana dzimbiri: ali ndi ulesi wa mankhwala. Kuphatikiza pa kutentha kwapadera kwa okosijeni amphamvu monga aqua regia, nitric acid, sulfuric acid ndi halogen, angagwiritsidwe ntchito pazinthu zambiri monga asidi, alkali, mchere, madzi a m'nyanja, nthunzi ndi zosungunulira organic;
5. Wabwino matenthedwe madutsidwendi coefficient yaing'ono yowonjezera kutentha. Magawo ake ali pafupi ndi dongosolo lomwelo la kukula kwa magawo awiri a zida zosindikizira. Ikhozanso kusindikizidwa bwino pansi pa ntchito yotentha kwambiri, kutentha kwa cryogenic ndi kutentha kwakuthwa;
6. Radiation resistance: kutengera kuwala kwa neutroni γ Ray α Ray β X-ray kunyezimira kwa nthawi yayitali popanda kusintha koonekeratu;
7. Impermeability: bwino impermeability kwa mpweya ndi madzi. Chifukwa chachikulu padziko mphamvu kukodzedwa graphite, n'zosavuta kupanga woonda kwambiri mpweya filimu kapena madzi filimu kulepheretsa sing'anga malowedwe;
8. Kudzipaka mafuta: graphite yowonjezera imasungabe mawonekedwe a hexagonal ndege. Pansi pa mphamvu yakunja, zigawo za ndege ndizosavuta kusuntha pang'ono ndipo kudzipaka nokha kumachitika, komwe kumatha kuletsa kuvala kwa shaft kapena ndodo ya valve.