Nyob rau lub caij nyoog niaj hnub no ntawm kev nce qib sai ntawm thev naus laus zis, cov khoom sib xyaw carbon fiber tau ua lub npe rau lawv tus kheej hauv ntau qhov chaw vim lawv qhov kev ua tau zoo tshaj plaws. Los ntawm cov ntawv thov siab kawg hauv aerospace mus rau cov kev xav tau txhua hnub ntawm cov khoom siv kis las, cov khoom sib xyaw carbon fiber tau qhia txog lub peev xwm zoo. Txawm li cas los xij, los npaj cov khoom sib xyaw carbon fiber ua tau zoo, kev kho mob ua kom muaj zog ntawmcov fiber carbonyog ib kauj ruam tseem ceeb.
Daim duab ntawm lub tshuab microscope uas muaj carbon fiber ntau
Cov roj carbon fiber, yog ib yam khoom siv fiber ua tau zoo heev, muaj ntau yam zoo. Nws feem ntau yog ua los ntawm cov roj carbon thiab muaj cov qauv filamentary ntev. Los ntawm qhov pom ntawm qhov chaw, qhov chaw ntawm cov roj carbon fiber yog du thiab muaj tsawg dua cov pab pawg ua haujlwm. Qhov no yog vim qhov tseeb tias thaum lub sijhawm npaj cov roj carbon fiber, kev ua kom kub thiab lwm yam kev kho mob ua rau qhov chaw ntawm cov roj carbon fiber muaj lub xeev inert ntau dua. Cov yam ntxwv ntawm qhov chaw no coj ntau yam kev cov nyom rau kev npaj cov roj carbon composites.
Qhov chaw du ua rau qhov sib txuas ntawm cov carbon fiber thiab cov khoom siv matrix tsis muaj zog. Hauv kev npaj cov khoom sib xyaw, nws nyuaj rau cov khoom siv matrix los tsim kom muaj kev sib txuas zoo rau ntawm qhov chaw ntawmcov roj carbon fiber, uas cuam tshuam rau tag nrho cov kev ua tau zoo ntawm cov khoom sib xyaw. Qhov thib ob, qhov tsis muaj cov pab pawg ua haujlwm txwv tsis pub cov tshuaj tiv thaiv ntawm cov carbon fibers thiab cov ntaub ntawv matrix. Qhov no ua rau kev sib txuas ntawm ob qho no feem ntau yog nyob ntawm cov teebmeem ntawm lub cev, xws li kev siv tshuab, thiab lwm yam, uas feem ntau tsis ruaj khov txaus thiab yooj yim sib cais thaum raug rau cov zog sab nraud.
Daim duab kos ntawm kev txhawb nqa ntawm cov ntaub carbon fiber los ntawm cov pa roj carbon nanotubes
Yuav kom daws tau cov teeb meem no, kev kho mob ua kom cov carbon fiber ua haujlwm tau zoo yuav tsum tau ua.cov fiber carbonqhia txog kev hloov pauv tseem ceeb hauv ntau yam.
Kev kho mob ua kom lub ntsej muag ntawm cov carbon fibers nce ntxiv. Los ntawm kev siv tshuaj oxidation, kev kho plasma thiab lwm txoj kev, cov qhov me me thiab cov grooves tuaj yeem raug etched rau hauv qhov chaw ntawm cov carbon fibers, ua rau qhov chaw ntxhib. Qhov chaw ntxhib no ua rau thaj chaw sib cuag ntawm cov carbon fiber thiab cov khoom siv substrate nce ntxiv, uas txhim kho kev sib txuas ntawm ob qho tib si. Thaum cov khoom siv matrix raug khi rau cov carbon fiber, nws muaj peev xwm zoo dua los nkag mus rau hauv cov qauv ntxhib no, tsim kom muaj kev sib txuas zoo dua.
Kev kho mob ua kom muaj zog tuaj yeem ua rau muaj ntau pawg neeg ua haujlwm reactive rau ntawm qhov chaw ntawm cov carbon fiber. Cov pawg ua haujlwm no tuaj yeem ua rau muaj kev sib txuas lus nrog cov pawg ua haujlwm sib xws hauv cov khoom siv matrix los tsim cov tshuaj sib txuas. Piv txwv li, kev kho oxidation tuaj yeem ua rau muaj cov pab pawg hydroxyl, cov pab pawg carboxyl thiab lwm cov pab pawg ua haujlwm rau ntawm qhov chaw ntawm cov carbon fiber, uas tuaj yeem ua rau muaj kev sib txuas lus nrogepoxycov pab pawg hauv cov resin matrix thiab lwm yam los tsim covalent bonds. Lub zog ntawm cov tshuaj sib txuas no siab dua li ntawm kev sib txuas lub cev, uas ua rau lub zog sib txuas ntawm cov carbon fiber thiab cov khoom siv matrix zoo dua.
Lub zog ntawm cov carbon fiber uas ua kom muaj zog kuj nce ntxiv ntau heev. Qhov nce ntawm lub zog ntawm cov carbon fiber ua rau cov khoom siv matrix yooj yim dua rau cov carbon fiber kom ntub, yog li ua rau cov khoom siv matrix kis tau thiab nkag mus rau saum npoo ntawm cov carbon fiber. Thaum npaj cov khoom sib xyaw, cov khoom siv matrix tuaj yeem faib sib npaug zos nyob ib puag ncig cov carbon fiber kom tsim tau cov qauv ntom dua. Qhov no tsis yog tsuas yog txhim kho cov khoom siv kho tshuab ntawm cov khoom sib xyaw xwb, tab sis kuj txhim kho nws cov khoom siv lwm yam, xws li kev tiv thaiv corrosion thiab thermal stability.
Cov roj carbon activated muaj ntau yam zoo rau kev npaj cov roj carbon fiber composites.
Nyob rau hauv cov nqe lus ntawm cov khoom siv kho tshuab, lub zog sib txuas ntawm cov interfacial ntawm cov activatedcov fiber carbonthiab cov khoom siv matrix tau zoo dua qub, uas ua rau cov khoom sib xyaw ua ke hloov pauv kev ntxhov siab zoo dua thaum raug rau sab nraud. Qhov no txhais tau tias cov khoom siv kho tshuab ntawm cov khoom sib xyaw xws li lub zog thiab modulus tau zoo dua qub. Piv txwv li, hauv thaj chaw aerospace, uas xav tau cov khoom siv kho tshuab siab heev, cov khoom siv dav hlau ua los ntawm cov khoom siv carbon fiber ua kom muaj peev xwm tiv taus cov khoom thauj dav hlau ntau dua thiab txhim kho kev nyab xeeb thiab kev ntseeg siab ntawm lub dav hlau. Hauv thaj chaw ntawm cov khoom siv kis las, xws li cov thav duab tsheb kauj vab, cov khoom siv golf, thiab lwm yam, cov khoom siv carbon fiber ua kom muaj peev xwm muab lub zog thiab kev tawv zoo dua, thaum txo qhov hnyav thiab txhim kho kev paub ntawm cov neeg ncaws pob.
Hais txog kev tiv thaiv corrosion, vim yog kev qhia txog cov pab pawg ua haujlwm reactive rau ntawm qhov chaw ntawm cov fibers carbon activated, cov pab pawg ua haujlwm no tuaj yeem tsim cov tshuaj sib txuas ruaj khov dua nrog cov khoom siv matrix, yog li txhim kho qhov kev tiv thaiv corrosion ntawm cov composites. Hauv qee qhov xwm txheej ib puag ncig hnyav, xws li ib puag ncig marine, kev lag luam tshuaj lom neeg, thiab lwm yam, qhov activatedcov khoom sib xyaw ua los ntawm cov roj carbon fibertuaj yeem tiv taus qhov kev puas tsuaj ntawm cov xov xwm corrosive thiab ntev lub neej kev pabcuam. Qhov no yog qhov tseem ceeb heev rau qee cov khoom siv thiab cov qauv uas siv rau hauv qhov chaw nyuaj rau lub sijhawm ntev.
Hais txog kev ruaj khov ntawm thermal, kev sib txuas zoo ntawm cov roj carbon fiber thiab cov khoom siv matrix tuaj yeem txhim kho qhov ruaj khov ntawm cov khoom sib xyaw. Nyob rau hauv qhov chaw kub siab, cov khoom sib xyaw tuaj yeem tswj tau cov khoom siv kho tshuab zoo dua thiab qhov ntev ruaj khov, thiab tsis yooj yim rau kev hloov pauv thiab kev puas tsuaj. Qhov no ua rau cov khoom sib xyaw carbon fiber muaj kev cia siab dav hauv kev siv kub siab, xws li cov khoom siv cav tsheb thiab cov khoom siv kub kawg ntawm lub cav dav hlau.
Hais txog kev ua haujlwm tau zoo, cov carbon fibers activated tau ua haujlwm ntau dua thiab sib haum xeeb zoo dua nrog cov khoom siv matrix. Qhov no ua rau nws yooj yim dua rau cov khoom siv matrix kom nkag mus thiab kho rau ntawm qhov chaw ntawm cov carbon fiber thaum lub sijhawm npaj cov khoom sib xyaw, yog li txhim kho kev ua haujlwm zoo thiab cov khoom zoo. Tib lub sijhawm, qhov tsim tau ntawm cov khoom sib xyaw carbon fiber activated kuj tau txhim kho, tso cai rau lawv kom raug kho rau ntau daim ntawv thov thiab kom ua tau raws li ntau yam kev xav tau engineering nyuaj.
Yog li ntawd, kev kho mob activation ntawmcov fiber carbonyog ib qho tseem ceeb hauv kev npaj cov khoom siv carbon fiber ntau. Los ntawm kev kho mob ua kom lub zog, cov qauv ntawm cov carbon fiber tuaj yeem txhim kho kom ua rau qhov roughness ntawm qhov chaw nce ntxiv, qhia cov pab pawg ua haujlwm nquag, thiab txhim kho lub zog ntawm qhov chaw, kom txhim kho lub zog sib txuas ntawm cov carbon fiber thiab cov khoom siv matrix, thiab tso lub hauv paus rau kev npaj cov khoom siv carbon fiber nrog cov khoom siv zoo heev, kev tiv thaiv corrosion, thermal stability thiab kev ua haujlwm. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, nws ntseeg tau tias cov thev naus laus zis carbon fiber yuav txuas ntxiv tsim kho tshiab thiab txhim kho, muab kev txhawb nqa zoo dua rau kev siv dav ntawm cov khoom siv carbon fiber.
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