Dab tsi yog cov khoom tshwj xeeb thiab kev siv graphite?

Vim nws cov qauv tshwj xeeb, graphite muaj cov khoom tshwj xeeb hauv qab no:

1) Hom kub resistant: Lub melting point ntawm graphite yog 3850 ± 50 degree, thiab boiling point yog 4250 degree. Txawm hais tias nws yog kub hnyiab los ntawm qhov kub thiab txias arc, qhov poob qis me me, thiab thermal expansion coefficient kuj me me. Lub zog ntawm graphite nce nrog qhov kub thiab txias, thiab ntawm 2000 degree, lub zog ntawm graphite ob npaug.

2) Hluav taws xob thiab thermal conductivity: cov conductivity ntawm graphite yog ib puas lub sij hawm siab tshaj ntawm cov minerals uas tsis yog-hlau. Thermal conductivity tshaj cov khoom hlau xws li hlau, hlau, thiab txhuas. Thermal conductivity txo qis nrog qhov kub thiab txias, thiab txawm tias kub heev, graphite ua raws li thermal insulator.

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.

4) Chemical stability: Graphite muaj tshuaj zoo nyob rau hauv chav tsev kub, thiab yog resistant rau acid, alkali thiab organic solvents.

Plasticity: Graphite muaj qhov toughness zoo thiab tuaj yeem tsim rau hauv cov flakes nyias heev.

Thermal shock resistance: Thaum graphite siv nyob rau hauv chav tsev kub, nws tuaj yeem tiv taus qhov kub thiab txias tsis muaj kev puas tsuaj. Thaum qhov kub thiab txias hloov pauv, qhov ntim ntawm graphite tsis hloov ntau, thiab tsis muaj qhov tawg yuav tshwm sim.

Kev siv graphite tshiab:

Nrog rau kev txhim kho txuas ntxiv ntawm kev tshawb fawb thiab thev naus laus zis, tib neeg kuj tau tsim ntau yam tshiab siv rau graphite.