Vim li cas rau cov yam ntxwv zoo ntawm flake graphite

Flake graphite siv dav hauv kev lag luam, uas yog los ntawm nws tus kheej cov yam ntxwv zoo. Niaj hnub no, Furuite Graphite Xiaobian yuav qhia koj cov laj thawj rau cov yam ntxwv zoo ntawm flake graphite los ntawm cov yam ntxwv ntawm tsev neeg cov khoom sib xyaw thiab cov siv lead ua ke:

Ua ntej, cov yam ntxwv zoo ntawm cov pa roj carbon uas ua raugraphite flakes.

1. Cov khoom siv tshuaj lom neeg ntawm cov pa roj carbon elemental yog qhov ruaj khov ntawm chav tsev kub, thiab nws tsis yaj hauv dej, dilute acid, dilute alkali thiab cov organic solvents;

2, ua rau muaj cov pa oxygen ntawm qhov kub sib txawv kom tsim cov pa roj carbon dioxide lossis carbon monoxide; Hauv halogen, tsuas yog fluorine thiaj li ua tau ncaj qha nrog cov pa roj carbon elemental;

3. Thaum cua sov, cov pa roj carbon yooj yim oxidized los ntawm acid;

4. Thaum kub siab, cov pa roj carbon kuj tseem tuaj yeem ua rau muaj ntau yam hlau los tsim cov hlau carbides;

5. Cov pa roj carbonyog reducible thiab siv tau los smelt hlau ntawm qhov kub siab.

Qhov thib ob, cov yam ntxwv ntawm cov khoom siv sib xyaw ua ke ntawm cov flake graphite.

1. Hauv cov siv lead ua los ntawm graphite, cov pa roj carbon hauv tib txheej sib xyaw nrog sp2 los tsim cov kev sib txuas ntawm covalent, thiab txhua lub atom carbon txuas nrog peb lub atoms los ntawm peb lub kev sib txuas ntawm covalent. Rau lub atoms carbon tsim ib lub nplhaib hexagonal ntawm tib lub dav hlau, ncab mus rau hauv ib txheej txheej, qhov twg qhov ntev ntawm CC kev sib txuas yog tag nrho 142pm, uas yog nyob rau hauv qhov ntev ntawm cov kev sib txuas ntawm atomic crystal, yog li rau tib txheej, nws yog ib lub siv lead ua los ntawm atomic.

2. Cov txheej ntawm cov graphite crystals raug sib cais los ntawm 340pm, uas yog qhov deb loj, thiab raug sib koom ua ke los ntawm van der Waals lub zog, uas yog, cov txheej yog cov molecular crystals. Txawm li cas los xij, vim yog qhov sib txuas ntawm cov pa roj carbon atoms hauv tib lub dav hlau txheej, nws nyuaj heev rau kev rhuav tshem, yog li qhov melting point ntawmgraphitekuj tseem siab thiab nws cov khoom siv tshuaj lom neeg ruaj khov.