Flake graphite imagwiritsidwa ntchito kwambiri m'makampani, zomwe zimachokera kuzinthu zake zapamwamba kwambiri. Lero, Furuite Graphite Xiaobian akuwuzani zifukwa zamakhalidwe apamwamba a flake graphite kuchokera kuzinthu zamabanja ndi makhiristo osakanikirana:
Choyamba, makhalidwe apamwamba a zinthu za carbon zomwe zimapangachithunzi cha graphite.
1. The mankhwala katundu wa elemental carbon ndi wokhazikika kutentha firiji, ndipo ndi insoluble m'madzi, kuchepetsa asidi, kuchepetsa alkali ndi organic solvents;
2, kuchita ndi mpweya pa kutentha osiyana kutentha kupanga mpweya woipa kapena mpweya monoxide; Mu halogen, fluorine yokha imatha kuchitapo kanthu mwachindunji ndi elemental carbon;
3. Pa kutentha, elemental carbon mosavuta oxidized ndi asidi;
4. Pa kutentha kwambiri, mpweya ungathenso kuchitapo kanthu ndi zitsulo zambiri kuti apange carbides zitsulo;
5. Mpweyandi reducible ndipo angagwiritsidwe ntchito kusungunula zitsulo pa kutentha kwambiri.
Chachiwiri, mawonekedwe a makhiristo osakanikirana omwe amapangidwa ndi flake graphite.
1. Mu kristalo wa graphite, maatomu a kaboni omwewo amasakanikirana ndi sp2 kupanga ma covalent bond, ndipo atomu iliyonse ya kaboni imalumikizidwa ndi ma atomu ena atatu ndi zomangira zitatu zolumikizana. Ma atomu asanu ndi limodzi a kaboni amapanga mphete ya hexagonal pa ndege yomweyo, yotambasulira mu mawonekedwe osanjikiza, pomwe kutalika kwa chomangira cha CC ndi 142pm, yomwe ndi yamtundu wamtundu wa kristalo wa atomiki, kotero kuti gawo lomwelo, ndi atomiki. kristalo.
2. Zigawo za makristasi a graphite zimasiyanitsidwa ndi 340pm, yomwe ndi mtunda waukulu, ndipo imaphatikizidwa ndi mphamvu ya van der Waals, ndiko kuti, zigawozo zimakhala za makristasi a maselo. Komabe, chifukwa cha mgwirizano wamphamvu pakati pa maatomu a carbon mu ndege yomweyi, zimakhala zovuta kwambiri kuwononga, kotero kuti kusungunuka kwagraphitenawonso ndi okwera komanso mankhwala ake ndi okhazikika.
Nthawi yotumiza: Apr-20-2023