Cov pa roj carbon fiber ntau yog cov khoom siv fiber ntau. Nws cov txheej txheem npaj feem ntau suav nrog cov kauj ruam hauv qab no:
1.Raw khoom xaiv
Lub ntsiab raw khoom ntawm carbon fiber yog polyacrylonitrile, uas yog ib tug hluavtaws fiber.
Qee lwm cov ntaub ntawv raw xws li thee pitch, natural fibers, kuj tuaj yeem siv los npaj cov pa roj carbon fibers.
2. Khiav
Lub precursor yog tov nrog lwm cov ntaub ntawv thiab ces spun rau hauv fibers.
Tom qab ntawd cov fibers yog ntxuav thiab ncab.
3. Kev ruaj ntseg
Cov pa roj carbon fiber yuav tsum tau hloov kho cov tshuaj ua ntej carbonization kom nws thermally ruaj khov los ntawm kev hloov nws cov linear atomic bonds rau ntaiv bonds. Ua kom sov cov fiber ntau hauv huab cua mus rau 200-300 degree li ntawm 30 feeb mus rau 2 teev. Cov txheej txheem cua sov no ua rau cov pa roj carbon atom kom nqus cov pa oxygen los ntawm huab cua thiab rov kho cov molecules rau hauv cov qauv kev sib txuas ntau dua thermally.
Cov txheej txheem exothermic no yuav tsum tau ua tib zoo tswj kom tsis txhob overheating ntawm fiber ntau. Muaj ntau txoj hauv kev siv los ua kom cov pa roj carbon fiber ntau ruaj khov.
4.Carbonization
Tom qab cov fiber ntau yog thermally stabilized, nws yog rhuab mus rau 1, 000-3, 000 degree nyob rau hauv tsis muaj oxygen rau ob peb feeb.
Qhov tsis muaj oxygen tiv thaiv cov fibers los ntawm qhov kub kub. Thaum lub sijhawm txheej txheem no, nws yog ib qho tseem ceeb uas yuav tsum ua kom cov huab cua siab nyob rau hauv lub qhov cub kom siab tshaj qhov cua siab sab nraum lub qhov cub, thiab ua kom lub qhov hluav taws xob thiab qhov hluav taws xob kaw kom tsis txhob muaj oxygen nkag mus rau hauv lub qhov cub.
Thaum qhov kub thiab txias no, cov fiber ntau tshem tawm nws cov tsis-carbon atoms, thiab cov seem carbon atoms tsim nruj nreem khi carbon crystals.
Cov pa roj carbon monoxide no tau ua raws li qhov sib npaug mus rau qhov ntev ntawm cov pa roj carbon fiber ntau.
5. Kev kho deg
Cov txheej txheem carbonization muab cov fiber ntau du nto uas tsis tuaj yeem sib raug zoo nrog epoxy resin thiab lwm yam khoom siv los ua cov khoom sib xyaw.
Yog li ntawd, qhov saum npoo yog me ntsis oxidized. Oxidation muab qhov chaw zoo dua tshuaj lom neeg cov khoom thaum tseem etching saum npoo kom cia cov tshuaj ua kom zoo dua rau ntawm qhov chaw.
Fibers qee zaum oxidized los ntawm immersing lawv nyob rau hauv gases xws li carbon dioxide, huab cua, los yog ozone, los yog nyob rau hauv cov kua xws li nitric acid los yog sodium hypochlorite. Lwm lub sij hawm, oxidation yog ua tiav los ntawm electrolysis los ntawm dipping zoo nqi fibers rau hauv da dej ntawm cov khoom conductive.
Txawm hais tias siv txoj kev npaj saum npoo av, nws yog ib qho tseem ceeb uas nws yuav tsum tau ua raws li kev saib xyuas kom zoo los ntawm cov kws tshaj lij los tiv thaiv kev qhia txog qhov tsis zoo ntawm qhov chaw uas tuaj yeem ua rau cov khoom tsis zoo.
6.Sizing
Thaum oxidized, cov fibers yog qhwv los tiv thaiv kev puas tsuaj thaum lub qhov txhab mus rau spools los yog woven rau hauv ntaub.
Cov txheej txheem txheej yog hu ua sizing, thiab cov khoom sizing yog ua tib zoo xaiv kom haum nrog cov nplaum siv los ua cov qauv sib xyaw.
Cov ntaub ntawv txheej muaj xws li polyester, nylon, urethane lossis epoxy.
Nws yuav tsum raug sau tseg tias cov txheej txheem kev npaj ntawm carbon fiber yog qhov nyuaj thiab yuav tsum tau tswj cov txheej txheem nruj thiab cov cuab yeej siv los xyuas kom meej tias cov pa roj carbon fiber ntau muaj kev ua haujlwm zoo thiab zoo.
