Raws li rau kev nrhiav pom thiab kev siv ntawm FLAKE graphite, muaj ib phau ntawv Shuijing Zhu yog thawj zaug, uas tau hais tias "muaj ib lub roob graphite ntawm ib sab Luoshui River". Cov pob zeb yog xim dub, yog li cov phau ntawv tuaj yeem sib kis tau, yog li ntawd lawv muaj npe nrov rau lawv cov graphite. "Kev tshawb fawb archaeological qhia tau tias thaum ntxov tshaj 3,000 xyoo dhau los hauv cov ling dynacaco (AD 1820), cov neeg ua liaj ua teb, Hunan xeev mined flake graphite Raws li roj, uas tau hu ua "Roj carbon".
Cov lus Askiv ntawm Graphite los ntawm Greek lo lus "graphite hauv", uas txhais tau tias "sau". Nws tau muab npe los ntawm German Chemist thiab Mineralogist Agwerner hauv 1789.
Cov mis nyuj molecular ntawm flake graphite yog c thiab nws txoj hnyav molecular yog 12.01. Ntuj graphite yog hlau xim dub thiab hlau grey, nrog ci dub streaks, yog xim hlau luster thiab opacity. Lub Crystal belongs rau chav kawm ntawm cov chav hexagonal biconical crystals, uas yog hexagonal phaj muaju. Cov ntaub ntawv sib txawv xws li cov rooj zaum sib npaug, cov kab ke hexagonal, tab sis nws yog feem ntau cov kab nrib pleb lossis phaj feem ntau. Cov qauv: A0 = 0.246NM, C0 = 0.246nm ib qho qauv txheej txheem fawm, thiab cov pa roj carbon monections yog teem rau hauv txhua txheej yog teem rau hauv lub nplhaib hexagonal. Lub hexagonal rings ntawm cov pa roj carbon nyob rau hauv lub sauv thiab qis ib sab ntawm cov kev taw qhia nyob rau hauv cov kev taw qhia mus ncig rau mesh dav hlau. Cov lus qhia sib txawv thiab cov kev sib txawv ntawm kev hloov chaw ua rau cov qauv sib txawv polymorphic. Qhov kev ncua deb ntawm cov pa roj carbon atoms nyob rau hauv cov txheej txheem sab sauv thiab qis dua uas nruab nrab ntawm cov txheej txheem qub (CC spacing hauv txheej txheej (0.142nm, CC spacing ntawm txheej = 0.340NM). 2.09-2.23 Kev nqus kev ntiajteb thiab 5-10m2 / g tshwj xeeb cheeb tsam. Lub hardness yog anisotropic, qhov ntsug cleavage dav hlau yog 3-5, thiab parallel cleavage dav hlau yog 1-2. Aggregates yog feem ntau kuj kuj kuj yog av thiab pob zeb thiab ntiaj teb. Graphite flake muaj hluav taws xob zoo thiab thermal conductivity. Cov ntxhia pob zeb hauv qab yog feem ntau opaque nyob rau hauv kev xa tawm lub teeb, muaj lub teeb liab qab yog lub teeb ntsuab-grey, nrog ib tug refack instex of 1.93 ~ 2.07. Hauv qab cov teeb pom kev, lawv yog lub teeb xim daj-Grey, RE tsaus-roenection grey thiab renection grey thiab reterogeneity, muaj zog heterogeneity thiab polarization. Cov cim xim: hlau dub, qis hardness, ib pawg ntawm huab kev ntse zoo, hloov pauv kev zoo, yooj yim rau stain ham. Yog hais tias zinc falles wetted los ntawm tooj liab sulfate daws tau muab tso rau ntawm graphite, nws yog xim tooj liab, thaum molybdenite zoo ib yam li nws tsis muaj cov tshuaj tiv thaiv no.
Graphite yog ib feem ntawm cov nroj tsuag roj carbon monoxentalal (lwm cov pa roj carbon monoxide), thiab cov pa roj carbon monoxide), thiab cov pa roj carbon monoxide), thiab cov pa roj carbon monomal) Txij li thaum txhua tus roj av attrits lub tshuab hluav taws xob, cov tshuab hluav taws xob tuaj yeem txav mus dawb, yog li flake graphite yog hluav taws xob coj. Cleavage dav hlau yog yeej los ntawm molecular Bonds, uas muaj qaug zog rau cov molecules, yog li nws ntuj ntab yog qhov zoo heev. Vim tias yog txoj kev sib koom ua ke tshwj xeeb ntawm Feding Graphite, peb tsis tuaj yeem xav tias Fedgle graphite yog tib lub crystal lossis polycystal. Tam sim no nws yog feem ntau suav tias Flake Graphite yog ib hom ntawm crystal.
Lub sij hawm ncua: Nov-04-2022