Graphite yog ib qho allotrope ntawm cov pa roj carbon monoxide, cov khoom siv hloov pauv hloov ntawm atomic crystals, hlau muaju thiab molecular crystals. Feem ntau grey dub, mos zoo nkauj, greasy xav.Enhanced cua sov hauv huab cua los yog oxygen uas hlawv thiab tsim carbon dioxide. Cov oxidizing muaj zog yuav oxidize nws mus rau hauv cov organic acids.Siv raws li antiwear tus neeg sawv cev thiab lubricating cov ntaub ntawv, ua cov khoom siv roj teeb, cov khoom siv roj teeb, cov khoom siv hluav taws xob. graphite nrhiav tau: ntuj graphite, ntom crystalline graphite, flake graphite, cryptocrystalline graphite, graphite hmoov, graphite ntawv, nthuav graphite, graphite emulsion, nthuav graphite, av nplaum graphite thiab conductive graphite hmoov, thiab lwm yam.
1. kub tsis kam: lub melting point ntawm graphite yog 3850 ± 50 ℃, txawm tias tom qab ultra-siab kub arc hlawv, qhov hnyav poob yog me me, thermal expansion coefficient tsawg heev.Lub zog ntawm graphite nce nrog qhov kub thiab txias. Ntawm 2000 ℃, lub zog ntawm graphite ob npaug.
2. conductive, thermal conductivity: lub conductivity ntawm graphite yog ib puas lub sij hawm siab tshaj cov uas tsis yog-metallic ore.The thermal conductivity ntawm hlau, hlau, txhuas thiab lwm yam hlau cov ntaub ntawv.Thermal conductivity txo nrog qhov nce ntawm qhov kub thiab txias, txawm nyob rau hauv high kub, graphite rau rwb thaiv tsev;
3. Lubricity: lub lubrication kev ua tau zoo ntawm graphite nyob ntawm qhov loj ntawm graphite flake, flake, kev sib txhuam coefficient me dua, lub lubrication kev ua tau zoo dua;
4. tshuaj stability: graphite nyob rau hauv chav tsev kub muaj zoo tshuaj stability, acid kuj, alkali tsis kam thiab organic hnyav corrosion kuj;
5. plasticity: graphite toughness yog zoo, tuaj yeem crushed rau hauv ib daim ntawv nyias nyias;
6. thermal poob siab tsis kam: graphite ntawm chav tsev kub thaum siv tuaj yeem tiv taus qhov kub thiab txias tsis muaj kev puas tsuaj, kub hloov pauv, qhov ntim ntawm graphite hloov me ntsis, yuav tsis tawg.
1. muaj pes tsawg leeg tsom xam: taag carbon, ya raws, impurities, thiab lwm yam .;
2. Kev kuaj lub cev: hardness, tshauv, viscosity, fineness, particle loj, volatilization, tshwj xeeb gravity, qhov chaw nto, melting point, thiab lwm yam.
3. Mechanical zog kuaj: tensile lub zog, brittleness, dabtsi yog khoov xeem, tensile xeem;
4. Kev ntsuas tshuaj lom neeg: dej tsis kam, kav ntev, kua qaub thiab alkali tsis kam, corrosion kuj, huab cua tsis kam, kub tsis kam, thiab lwm yam
5. Lwm yam khoom kuaj: hluav taws xob conductivity, thermal conductivity, lubrication, tshuaj stability, thermal shock kuj