Carbon fiber, tseem hu ua graphite fiber los yog carbon graphite, yog tsim los ntawm zoo heev filaments ntawm lub caij carbon. Cov pa roj carbon fiber ntau muaj lub zog tensile siab thiab muaj zog heev rau nws qhov loj. Nws kuj yog ib yam khoom siv lub teeb heev.
Txoj kab uas hla ntawm txhua fiber ntau yog {{0}} microns. Txhawm rau muab koj lub tswv yim ntawm qhov me me, ib micron yog sib npaug rau 0.0001 mm. Ib kab laug sab web filament yog nruab nrab ntawm 3 thiab 8 microns nyob rau hauv txoj kab uas hla.
Nta thiab daim ntawv thov
Cov pa roj carbon fiber ntau yog ob zaug nyuaj thiab tsib npaug zog li hlau. Lwm qhov tshwj xeeb yog lawv cov qib siab ntawm cov tshuaj tiv thaiv, kub tsis kam thiab qis thermal expansion.
Cov pa roj carbon fiber ntau yog cov khoom siv engineering tseem ceeb hauv kev tsim cov dav hlau, tsheb ua haujlwm siab, cov khoom ua si thiab cov twj paj nruag.
Yuav ua li cas carbon fiber
Carbon fiber yog tsim los ntawm cov organic polymers. Cov polymers no yog tsim los ntawm cov hlua ntev ntawm cov molecules txuas ua ke los ntawm carbon atoms. Txog 90% ntawm carbon fiber yog tsim los ntawm cov txheej txheem polyacrylonitrile (PAN). Qhov seem 10% yog tsim los siv cov txheej txheem rayon lossis roj av bitumen.
Cov pa roj carbon monoxide, kua thiab lwm yam khoom siv hauv cov txheej txheem tsim khoom tsim muaj qee yam kev cuam tshuam carbon fiber, zoo thiab qib. Cov qib siab tshaj plaws ntawm cov pa roj carbon fiber ntau nrog cov khoom siv tau zoo yog siv rau hauv kev thov xws li kev lag luam aerospace.
Cov tuam txhab carbon fiber ntau sib txawv hauv kev sib xyaw ntawm cov khoom siv raw lawv siv. Lawv feem ntau kho lawv cov zaub mov txawv raws li kev lag luam zais cia.
kev tsim khoom
Thaum lub sij hawm tsim cov txheej txheem, raw khoom hu ua precursors yog kos rau hauv cov fiber ntau ntev. Tom qab ntawd cov fibers yog woven rau hauv ntaub. Lawv tuaj yeem ua ke nrog lwm cov ntaub ntawv, filament-qhov txhab lossis molded rau hauv cov duab thiab qhov loj me.
Txoj kev tsim khoom yog raws li nram no:
Tig. PAN yog tov nrog lwm cov khoom xyaw thiab spun rau hauv fibers, uas yog ces ntxuav thiab stretched.
Ua kom ruaj khov. Kev hloov tshuaj lom neeg kom ruaj khov.
Carbonization. Cov stabilizing fibers yog rhuab mus rau qhov kub siab heev, tsim nruj nreem khi cov muaju muaju.
Kho qhov chaw. Lub fiber nto yog oxidized los txhim kho cov khoom sib txuas.
qhov loj me. Cov fibers yog coated thiab raug mob rau spools. Tom qab ntawd lawv tau thauj mus rau cov tshuab spinning, uas twist cov fibers rau hauv cov xov paj ntawm ntau qhov sib txawv.
Fibers tuaj yeem tsim rau hauv cov ntaub ntawv sib xyaw es tsis yog siv rau hauv cov ntaub. Txhawm rau tsim cov khoom sib xyaw, cua sov, siab lossis lub tshuab nqus tsev tuaj yeem siv los txuas cov fibers rau cov yas polymer.
Tej yam uas yuav tsum tau xav txog
Kev tsim cov pa roj carbon fiber ntau ntsib teeb meem, suav nrog:
Kev kho kom zoo thiab kho kom zoo dua qub yog xav tau.
Cov txheej txheem kho saum npoo yuav tsum tau ua tib zoo tswj kom tsis txhob tsim cov pits uas tuaj yeem ua rau muaj fiber ntau.
Kev tswj nruj yuav tsum tau ua kom zoo ib yam.
Vim muaj zog conductivity ntawm carbon fiber, arcing thiab luv circuits tuaj yeem tshwm sim hauv cov khoom siv hluav taws xob.
Kev txhawj xeeb txog kev noj qab haus huv thiab kev nyab xeeb xws li khaus tawv nqaij thiab teeb meem ua pa.
