Graphite ntawv yog ib daim ntawv tshwj xeeb ua los ntawm graphite ua raw khoom. Thaum graphite tsuas yog khawb hauv av, nws zoo li cov nplai, thiab nws yog mos thiab hu ua ntuj graphite. Cov graphite no yuav tsum tau ua tiav thiab ua kom zoo kom zoo. Ua ntej, soak lub ntuj graphite nyob rau hauv ib tug sib tov ntawm concentrated sulfuric acid thiab concentrated nitric acid rau ib lub sij hawm ntawm lub sij hawm, ces muab nws tawm, yaug nws nrog dej, qhuav nws, thiab ces muab tso rau hauv ib lub qhov cub kub kub rau hlawv. Furuite graphite editor hauv qab no qhia txog qhov yuav tsum tau ua ua ntej rau kev tsim cov ntawv graphite:
Vim hais tias cov inlays ntawm cov graphites evaporate sai sai tom qab rhuab, thiab nyob rau tib lub sij hawm, lub ntim ntawm graphite sai expands los ntawm kaum ob los yog ntau pua lub sij hawm, yog li ib tug dav graphite yog tau, uas yog hu ua "expanded graphite". Muaj ntau cov kab noj hniav (sab laug tom qab cov inlays raug tshem tawm) hauv cov graphite nthuav dav, uas txo qhov ntom ntom ntawm cov graphite, uas yog 0.01-0.059 / cm3, lub teeb hauv qhov hnyav thiab zoo heev hauv cov rwb thaiv tsev kub. Vim tias muaj ntau qhov sib txawv, qhov sib txawv, thiab qhov tsis sib xws, lawv tuaj yeem sib tsoo nrog ib leeg thaum siv lub zog sab nraud. Qhov no yog tus kheej-adhesion ntawm nthuav graphite. Raws li tus kheej-adhesion ntawm nthuav graphite, nws tuaj yeem ua tiav rau hauv daim ntawv graphite.
Yog li ntawd, qhov yuav tsum tau ua ua ntej rau kev tsim cov ntawv graphite yog kom muaj cov khoom siv ua tiav, uas yog, cov cuab yeej siv los npaj cov graphite nthuav dav los ntawm kev immersion, ntxuav, hlawv, thiab lwm yam, uas muaj dej thiab hluav taws. Nws yog ib qho tseem ceeb tshwj xeeb; qhov thib ob yog papermaking thiab nias cov menyuam tshuab. Lub siab linear ntawm cov menyuam nias yuav tsum tsis txhob siab dhau, txwv tsis pub nws yuav cuam tshuam rau qhov sib npaug thiab lub zog ntawm daim ntawv graphite, thiab yog tias lub siab ntawm cov kab tawm me me dhau lawm, nws yog qhov tsis txaus ntseeg. Yog li ntawd, cov txheej txheem txheej txheem yuav tsum yog qhov tseeb, thiab daim ntawv graphite ntshai tsam ya raws, thiab daim ntawv tiav yuav tsum tau ntim rau hauv cov khoom ntim dej noo thiab khaws cia kom zoo.
Post lub sij hawm: Sep-23-2022