Graph ib daim ntawv yog qhov siab - Kev ua tau cov khoom ua los ntawm kev ua tshwj xeeb lossis hluavtaws graphite. Nws tau khav theeb thermal thiab hluav taws xob conductivity, yog lub teeb yuag, thiab hloov tau. Nws yog dav siv hauv cov khoom siv hluav taws xob txias, cov roj teeb tshiab, cov roj teeb, thiab lwm thaj teb. Cov txheej txheem ntau lawm cuam tshuam ntau cov kauj ruam, suav nrog raw khoom pretreatment, graphitization, thiab tshaj tawm {{{{kev ua.
Cov Khoom Siv Raw Ua Ntej
Graphite ntawv yog feem ntau ua los ntawm ntuj flake graphite lossis hluavtaws graphite lossis hluavtaws graphite. Ua ntej, cov khoom siv tau ua tiav undergoes muldization thiab kev faib tawm, sib tsoo {-}} qhov loj me ntawm cov kauj ruam kev ua tiav. Tom qab, impurities xws li silicates thiab hlau oxides tau muab tshem tawm los ntawm kev muab tshuaj txhuam lossis tshuaj purification kom ntseeg tau tias yog cov duab graphite siab tshaj 99%. Rau graphite daim ntawv xav tau siab siab muaj siab, ntxiv kev ua kom zoo yog ua kom siv siab - qhov kub thiab txias acid ntxuav lossis alkali fusion.
Duab
Lub pretreated graphite hmoov incebeoes graphitization ntawm qhov kub kom txhim kho nws cov qauv fawm. Tus txheej txheem no feem ntau tshwm sim nyob rau hauv graphitization rauv taws (xws li kev kub siab lossis kev ntsuas hluav taws xob ntau tshaj li 2800℃cov carbon rau hauv cov qauv graphous graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite graphite. Gracitizitization tsis tsuas yog txhim kho cov khoom siv thermal thiab hluav taws xob conductivity tab sis kuj txhim kho nws cov khoom siv zog. Hauv qee cov txheej txheem, ib phau ntawv (xws li Phenolic Resin lossis Suab) yog ntxiv rau kev kho cov pa roj hmab txuas ntxiv, tab sis ua tiav cov pa roj carbon monoxide ntawm qhov kub siab yuav tsum tau ua kom tsis txhob muaj kev cuam tshuam dab tsi.
Daim ntawv suav
Cov khoom siv graphitized yog tsoo thiab tshuaj ntsuam, tom qab ntawd tov nrog me me ntawm cov roj nplua nyeem (xws li molybdenum disulfide) thiab rolled tsis tu ncua los ntawm ntau- theem calender. Thaum pib, roughing yob tau siv los txo cov tuab, ua raws li kev ua kom tiav rau lub hom phiaj tuab (feem ntau 0.05} 2 hli). Thaum lub sij hawm calendering txheej txheem, kub (kwv yees li ntawm 100-300 yuav tsum nruj me ntsis tswj hwm kom ntseeg tau nruj ntawm cov khaubncaws sab nraud ntawm cov txheej txheem thiab cov npoo ruaj khov. Qee qhov kev kawm graphite high-as graphite
Post - Ua thiab Kev Soj Ntsuam Zoo
Tom qab sib sau, daim ntawv graphite undergoes txiav, trimming, thiab kev kho kom nto (xws li isti {}} oxidation txheej) raws li qhov xav tau. Thaum kawg, nws undergoes nyuaj ntsuas, suav nrog cov tuab tuab, muab tshuaj ntsuam thensile, kom ntseeg tau tias cov khoom lag luam muaj txiaj ntsig.
Cov txheej txheem ntau lawm rau graphite ntawv sib xyaw ua ke cov ntaub ntawv tshawb fawb thiab kev tsim khoom siv thev naus laus zis. Kev tsim kho cov txheej txheem ncaj qha cuam tshuam kev ua tau zoo kawg nkaus, ua rau nws cov khoom tseem ceeb rau cov khoom siv rau niaj hnub no.
