Cov Khoom Tshwj Xeeb Ntawm Graphite
Mar 17, 2021
(1) Kub kub tsis kam
Lub melting point ntawm graphite yog 3850 ± 50 ° C. Txawm hais tias nws raug kub hnyiab los ntawm ultra-siab kub arc, qhov poob qis yog me me, thiab thermal expansion coefficient kuj tsawg heev. Lub zog ntawm graphite nce nrog qhov nce ntawm qhov kub thiab txias. Ntawm 2000 ° C, lub zog ntawm graphite ob npaug.
(2) Hluav taws xob thiab thermal conductivity
Lub conductivity ntawm graphite yog ib puas lub sij hawm siab tshaj ntawm cov minerals uas tsis yog-hlau. Cov thermal conductivity tshaj cov khoom siv hlau xws li hlau, hlau, thiab txhuas. Thermal conductivity txo nrog nce kub, txawm tias kub heev, graphite ua ib qho insulator. Graphite tuaj yeem ua hluav taws xob vim tias txhua cov pa roj carbon atom hauv graphite tsuas yog 3 covalent daim ntawv cog lus nrog rau lwm cov pa roj carbon atom, thiab txhua cov pa roj carbon atom tseem khaws 1 cov hluav taws xob dawb los hloov cov nqi.
(3) Lubricity
Lub lubricating kev ua tau zoo ntawm graphite nyob ntawm qhov loj ntawm graphite flakes. Qhov loj ntawm cov flakes, qhov me me ntawm kev sib txhuam coefficient thiab qhov zoo ntawm lubricating kev ua tau zoo.
