Hav nyob ntawd! Raws li tus neeg muag khoom ntawm graphite bipolar daim hlau, kuv feem ntau tau nug txog cov khoom siv dab tsi los ua cov khoom tseem ceeb no. Yog li, kuv xav tias kuv yuav siv sij hawm los rhuav tshem rau koj.
Graphite bipolar daim hlau yog ib feem tseem ceeb ntawm cov roj hlwb, uas yog cov khoom siv uas hloov cov tshuaj lom neeg rau hauv hluav taws xob. Lawv ua lub luag haujlwm tseem ceeb hauv kev sib cais cov roj reactant, ua hluav taws xob, thiab muab kev txhawb nqa tshuab hauv cov roj cell. Tam sim no, cia peb dhia mus rau hauv cov ntaub ntawv uas nkag mus rau hauv kev ua cov phiaj no.
Ntuj Graphite
Ib qho ntawm cov ntaub ntawv tseem ceeb siv hauv graphite bipolar daim hlau yog ntuj graphite. Nws yog ib daim ntawv ntawm carbon uas tshwm sim nyob rau hauv lub ntiaj teb crust. Ntuj graphite muaj qee yam khoom zoo uas ua rau nws haum rau daim phiaj bipolar. Nws muaj cov khoom siv hluav taws xob siab, uas yog qhov tseem ceeb rau kev hloov cov hluav taws xob tam sim no hauv cov roj hluav taws xob. Nws kuj muaj cov tshuaj lom neeg ruaj khov zoo, txhais tau tias nws tuaj yeem tiv taus cov tshuaj hnyav ib puag ncig hauv cov roj cell yam tsis muaj degrading yooj yim.
Ntuj graphite tuaj yeem muab faib ua ntau hom, xws li flake graphite thiab amorphous graphite. Flake graphite muaj ib tug flaky los yog scaly qauv, uas muab nws zoo heev lubricating zog ntxiv rau nws conductivity. Amorphous graphite, ntawm qhov tod tes, muaj cov qauv tsis zoo thiab feem ntau siv rau hauv cov ntawv thov uas tus nqi yog qhov tseem ceeb.
Synthetic Graphite
Ntxiv nrog rau ntuj graphite, hluavtaws graphite kuj tau siv dav hauv kev tsim cov graphite bipolar daim hlau. Synthetic graphite yog tsim los ntawm cua sov cov ntaub ntawv carbonaceous, xws li roj av coke los yog thee tar pitch, thaum kub heev. Cov txheej txheem no, hu ua graphitization, hloov cov pa roj carbon rau hauv cov qauv graphite heev.
Synthetic graphite muaj ntau qhov zoo dua li ntuj graphite. Nws tuaj yeem tsim kho kom muaj cov khoom tshwj xeeb, xws li purity siab dua thiab zoo dua txhua yam zog. Qhov no ua rau nws yog qhov kev xaiv zoo rau cov ntawv thov uas yuav tsum tau ua haujlwm siab. Piv txwv li, nyob rau hauv cov roj hlwb siv nyob rau hauv tsheb daim ntawv thov, hluavtaws graphite bipolar daim hlau tuaj yeem muab cov kav ntev thiab kev ntseeg siab uas yuav tsum tau muaj los tiv thaiv kev nruj ntawm kev siv txhua hnub.
Cov pa roj carbon fibers
Carbon fibers yog lwm yam khoom tseem ceeb siv hauv graphite bipolar daim hlau. Cov fibers no yog tsim los ntawm cua sov thiab ncab cov organic polymers, xws li polyacrylonitrile (PAN), tsim kom ntev, nyias strands ntawm carbon. Cov pa roj carbon fibers muaj lub zog siab heev - mus rau - qhov hnyav piv thiab zoo heev thermal thiab hluav taws xob conductivity.
Thaum muab tso rau hauv graphite bipolar daim hlau, carbon fibers tuaj yeem txhim kho cov khoom siv hluav taws xob ntawm daim hlau, ua rau lawv tiv taus kev tawg thiab deformation. Lawv kuj tuaj yeem txhim kho cov hluav taws xob conductivity los ntawm kev muab txoj hauv kev ntxiv rau kev ntws ntawm electrons. Qhov no ua rau lub roj hluav taws xob ntau dua nrog kev ua haujlwm zoo dua.
Resins thiab Binders
Txhawm rau tuav tag nrho cov ntaub ntawv no ua ke thiab tsim ib qho khoom graphite bipolar phaj, resins thiab binders yog siv. Cov ntaub ntawv no ua raws li cov nplaum, sib txuas cov graphite hais thiab carbon fibers ua ke los tsim cov qauv cohesive. Muaj ntau ntau hom resins thiab binders uas tuaj yeem siv tau, suav nrog phenolic resins, epoxy resins, thiab thermoplastic resins.
Phenolic resins feem ntau yog siv rau hauv kev tsim cov graphite bipolar daim hlau vim tias lawv muaj cov cua sov zoo thiab tshuaj lom neeg ruaj khov. Lawv tuaj yeem tiv taus qhov kub thiab txias ib puag ncig hauv cov roj cell yam tsis tau tawg. Epoxy resins, ntawm qhov tod tes, muab cov adhesion zoo heev thiab cov khoom siv kho tshuab, ua rau lawv muaj kev xaiv nrov rau cov ntawv thov uas yuav tsum muaj lub zog siab.
Lwm yam Additives
Ntxiv nrog rau cov ntaub ntawv tseem ceeb uas tau hais los saum toj no, lwm cov khoom siv ntxiv kuj tseem siv tau rau hauv kev tsim cov graphite bipolar daim hlau. Cov additives no tuaj yeem siv los txhim kho cov khoom tshwj xeeb ntawm daim hlau, xws li lawv cov hydrophobicity (ua haujlwm rau dej), corrosion resistance, los yog gas permeability.
Piv txwv li, qee cov tuam txhab lag luam tuaj yeem ntxiv cov tshuaj hydrophobic rau cov resin los yog khi kom tiv thaiv dej los ntawm kev sib sau ntawm cov phaj bipolar. Qhov no tuaj yeem pab txhim kho kev ua haujlwm ntawm cov roj hluav taws xob los ntawm kev tiv thaiv dej nyab, uas tuaj yeem txo qhov kev ua haujlwm ntawm cov tshuaj tiv thaiv. Lwm cov khoom siv ntxiv, xws li cov tshuaj tiv thaiv corrosion, tuaj yeem siv los tiv thaiv cov phaj bipolar los ntawm cov teebmeem corrosive ntawm cov roj reactant thiab cov electrolyte.
Txheej txheem tsim khoom
Tam sim no peb tau tham txog cov ntaub ntawv siv los ua graphite bipolar daim hlau, cia peb saib sai ntawm cov txheej txheem tsim khoom. Cov txheej txheem feem ntau muaj ob peb kauj ruam, suav nrog kev sib xyaw cov khoom siv raw, molding cov khoom sib xyaw rau hauv cov duab uas xav tau, thiab tom qab ntawd kho lossis sintering qhov molded kom tawv.
Ua ntej, lub ntuj los yog hluavtaws graphite, carbon fibers, resin, thiab tej additives yog tov ua ke nyob rau hauv ib tug tshwj xeeb piv. Qhov sib tov no ces muab tso rau hauv pwm, uas yog tsim los muab cov phaj bipolar nws cov duab kawg. Cov pwm feem ntau yog rhuab thiab pressurized los xyuas kom meej tias qhov sib tov puv tag nrho cov kab noj hniav thiab siv rau hauv daim ntawv xav tau.
Tom qab cov txheej txheem molding, lub phaj bipolar raug tshem tawm ntawm cov pwm thiab ua tiav cov txheej txheem sintering. Qhov no suav nrog cua sov qhov chaw ntawm qhov kub thiab txias kom ua kom cov resin los yog khi thiab ntxiv dag zog rau cov khoom ntawm graphite. Qhov ntsuas kub thiab lub sijhawm ntawm kev kho lossis sintering yog nyob ntawm cov ntaub ntawv tshwj xeeb thiab cov txheej txheem tsim khoom siv.
Peb cov khoom thiab lawv qhov zoo
Raws li tus neeg muag khoom ntawm graphite bipolar daim hlau, peb txaus siab rau kev siv siab - cov ntaub ntawv zoo thiab cov txheej txheem tsim khoom siab heev los tsim peb cov khoom. Peb muab ntau hom graphite bipolar daim hlau uas tsim nyog rau ntau yam kev siv, suav nrog tsheb, hluav taws xob nyob ruaj ruaj, thiab khoom siv hluav taws xob.
Peb cov phaj yog tsim los ntawm kev sib xyaw ntawm ntuj thiab hluavtaws graphite, carbon fibers, thiab siab -kev ua tau zoo resins thiab binders. Qhov no muab lawv zoo heev hluav taws xob conductivity, mechanical zog, thiab tshuaj stability. Peb kuj siv cov txheej txheem tsim khoom siab heev los xyuas kom meej tias peb cov phaj muaj qhov zoo thiab ua haujlwm zoo.
Ntxiv rau peb cov khoom lag luam, peb kuj muab cov kev cai daws teeb meem kom tau raws li cov kev xav tau tshwj xeeb ntawm peb cov neeg siv khoom. Txawm hais tias koj xav tau ib lub phaj bipolar nrog cov duab tshwj xeeb, qhov loj me, lossis kev ua tau zoo, peb tuaj yeem ua haujlwm nrog koj los tsim cov kev daws teeb meem raws li koj xav tau.
Yam khoom Graphite
Peb kuj muab ntau yam ntawm lwm yam graphite khoom uas muaj feem xyuam rau peb graphite bipolar daim hlau. Piv txwv li, peb muaj PECVD Graphite Boat, uas yog siv nyob rau hauv kev lag luam photovoltaic rau tshuaj vapor deposition txheej txheem. Cov nkoj no yog tsim los ntawm siab - zoo graphite thiab yog tsim los tiv taus kub thiab corrosive ib puag ncig.
Peb kuj muaj Graphite Chuck, uas yog siv nyob rau hauv semiconductor manufacturing rau tuav thiab ua wafers. Peb cov graphite chucks yog qhov tseeb - tshuab ua kom paub tseeb qhov chaw thiab ua haujlwm siab.
Thiab yog tias koj xav tau Graphite Base Susceptors, peb tau txais koj them. Cov susceptors no yog siv rau hauv kev tsim cov silicon wafers thiab lwm yam khoom siv semiconductor. Lawv yog tsim los ntawm siab - purity graphite thiab yog tsim los muab thermal conductivity zoo thiab uniformity.
Vim Li Cas Xaiv Peb
Muaj ob peb lub laj thawj vim li cas koj yuav tsum xaiv peb ua koj tus graphite bipolar phaj tsum. Ua ntej tshaj plaws, peb muaj ib pab pawg kws tshaj lij engineers thiab cov kws tshaj lij uas tau mob siab rau tsim cov khoom zoo -. Peb siv cov thev naus laus zis tshiab thiab cov cuab yeej siv los xyuas kom meej tias peb cov khoom ua tau raws li cov qauv zoo tshaj plaws thiab kev ua haujlwm zoo.
Thib ob, peb muab cov nqi sib tw yam tsis muaj kev cuam tshuam rau qhov zoo. Peb nkag siab tias tus nqi yog qhov tseem ceeb rau peb cov neeg siv khoom, yog li peb ua haujlwm kom peb cov nqi qis li sai tau thaum tseem muab tus nqi zoo tshaj rau cov nyiaj.
Thaum kawg, peb muab kev pabcuam zoo rau cov neeg siv khoom. Peb pab pawg muag khoom thiab kev txhawb nqa yeej ib txwm muaj los teb koj cov lus nug, muab kev pabcuam, thiab pab koj nrhiav cov khoom tsim nyog rau koj daim ntawv thov. Peb ntseeg tias tsim kom muaj kev sib raug zoo nrog peb cov neeg siv khoom, thiab peb tau cog lus tias yuav muab cov kev paub zoo tshaj plaws rau lawv.
Tau nyob rau hauv kov
Yog tias koj txaus siab kawm ntxiv txog peb cov graphite bipolar daim hlau lossis ib qho ntawm peb cov khoom siv graphite, thov tsis txhob yig tiv tauj peb. Peb zoo siab los tham txog koj cov kev xav tau thiab muab cov lus qhia rau koj. Txawm hais tias koj yog cov chaw tsim khoom loj lossis kev lag luam me, peb muaj cov khoom lag luam thiab cov kws tshaj lij kom tau raws li koj cov kev xav tau. Yog li, vim li cas tos? Hu rau peb hnub no thiab cia peb pib sib tham txog yuav ua li cas peb tuaj yeem pab koj nrog koj cov khoom lag luam graphite xav tau.
Cov ntaub ntawv
"Fuel Cell Technology Phau Ntawv Qhia" los ntawm Paul RN Childs
"Graphite thiab Carbon Fibers" los ntawm Lawrence F. Allard
Ntau yam kev lag luam luam tawm thiab cov ntaub ntawv tshawb fawb txog roj cell technology thiab graphite cov ntaub ntawv