Nrog rau kev txhim kho tas mus li ntawm cov khoom sib xyaw, ntxiv rau cov iav fiber-reinforced plastics, carbon fiber-reinforced plastics, boron fiber-reinforced plastics, thiab lwm yam tau tshwm sim. Carbon fiber reinforced polymer composites (CFRP) yog cov khoom siv sib dua thiab muaj zog uas siv los tsim ntau yam khoom uas peb siv hauv peb lub neej txhua hnub. Nws yog ib lo lus siv los piav qhia txog cov khoom sib xyaw fiber-reinforced uas siv carbon fibers ua cov khoom tseem ceeb.
Cov Ntsiab Lus:
1. Cov Qauv Polymer Uas Muaj Cov Khoom Siv Carbon Fiber
2. Txoj Kev Moulding ntawm Carbon Fiber Reinforced Yas
3. Cov Khoom ntawm Carbon Fiber Reinforced Polymer
4. Cov txiaj ntsig ntawm CFRP
5. Qhov tsis zoo ntawm CFRP
6. Cov Khoom Siv Yas Uas Muaj Carbon Fiber Reinforced
Cov Qauv Polymer Uas Muaj Cov Khoom Siv Carbon Fiber
Cov yas ua los ntawm cov roj carbon fiber yog cov khoom siv uas tsim los ntawm kev npaj cov khoom siv roj carbon fiber rau hauv ib qho kev taw qhia thiab siv cov khoom siv polymer sib txuas. Lub txoj kab uas hla ntawm cov roj carbon fiber yog nyias heev, txog li 7 microns, tab sis nws lub zog yog siab heev.
Cov khoom siv tseem ceeb tshaj plaws ntawm cov khoom siv carbon fiber reinforced composite yog carbon fiber filament. Cov khoom siv raw ntawm carbon filament yog prepolymer polyacrylonitrile (PAN), rayon, lossis petroleum pitch. Cov carbon filaments ces ua rau cov ntaub carbon fiber los ntawm cov tshuaj lom neeg thiab cov txheej txheem kho tshuab rau cov khoom carbon fiber.
Cov polymer khi feem ntau yog cov thermosetting resin xws li epoxy. Lwm cov thermosets lossis thermoplastic polymers qee zaum siv, xws li polyvinyl acetate lossis nylon. Ntxiv rau cov carbon fibers, cov composites kuj tseem tuaj yeem muaj aramid Q, ultra-high molecular weight polyethylene, txhuas, lossis iav fibers. Cov khoom ntawm cov khoom carbon fiber kawg kuj tuaj yeem cuam tshuam los ntawm hom additives nkag mus rau hauv lub matrix bonding.
Txoj Kev Moulding ntawm Carbon Fiber Reinforced Yas
Cov khoom siv carbon fiber feem ntau txawv vim yog cov txheej txheem sib txawv. Muaj ntau txoj hauv kev los tsim cov khoom siv polymer uas muaj carbon fiber ntxiv rau.
1. Txoj Kev Tso Tes
Muab faib ua txoj kev qhuav (ua ntej npaj khw) thiab txoj kev ntub (ntaub fiber thiab resin glued siv). Tes lay-up kuj siv los npaj prepregs rau kev siv hauv cov txheej txheem molding theem nrab xws li compression molding. Txoj kev no yog qhov twg cov ntawv ntawm cov ntaub carbon fiber yog laminated rau ntawm pwm los tsim cov khoom kawg. Lub zog thiab cov khoom tawv ntawm cov khoom tshwm sim tau zoo tshaj plaws los ntawm kev xaiv qhov sib phim thiab weave ntawm cov ntaub fibers. Lub pwm ces puv nrog epoxy thiab kho nrog cua sov lossis cua. Txoj kev tsim khoom no feem ntau siv rau cov khoom tsis muaj kev ntxhov siab, xws li lub cav npog.
2. Txoj Kev Tsim Lub Tshuab Nqus Tsev
Rau cov khoom siv laminated prepreg, nws yog qhov tsim nyog los siv lub zog los ntawm qee txoj kev kom nws nyob ze rau pwm thiab kom kho thiab ua kom nws zoo li qub nyob rau hauv qee qhov kub thiab siab. Txoj kev siv lub hnab nqus tsev siv lub twj tso kua mis nqus tsev kom tshem tawm sab hauv ntawm lub hnab ua kom lub zog tsis zoo ntawm lub hnab thiab pwm tsim lub zog kom cov khoom sib xyaw nyob ze rau pwm.
Raws li txoj kev siv lub hnab nqus tsev, txoj kev tsim lub hnab nqus tsev-autoclave tau tsim tom qab. Autoclaves muab kev siab dua thiab cua sov kho qhov khoom (hloov chaw kho ntuj) dua li cov txheej txheem siv lub hnab nqus tsev xwb. Cov khoom zoo li no muaj cov qauv me dua, zoo dua qhov chaw, tuaj yeem tshem tawm cov pa npuas (cov npuas yuav cuam tshuam loj rau lub zog ntawm qhov khoom), thiab qhov zoo tag nrho yog siab dua. Qhov tseeb, cov txheej txheem ntawm lub hnab nqus tsev zoo ib yam li cov txheej txheem ntawm cov yeeb yaj kiab xov tooj ntawm tes lo rau. Kev tshem tawm cov pa npuas yog ib txoj haujlwm tseem ceeb.
3. Txoj Kev Sib Tov Khoom
Kev txhaj tshuaj moldingyog ib txoj kev molding uas ua rau muaj kev tsim khoom ntau thiab ntau. Cov pwm feem ntau yog ua los ntawm cov khoom sab saud thiab sab qis, uas peb hu ua pwm txiv neej thiab pwm poj niam. Cov txheej txheem molding yog muab cov lev ua los ntawm prepregs rau hauv cov pwm hlau, thiab nyob rau hauv qhov kub thiab txias thiab siab, cov lev raug cua sov thiab yas rau hauv qhov pwm, ntws raws li siab, thiab sau cov pwm qhov, thiab tom qab ntawd Thiab molding thiab kho kom tau cov khoom. Txawm li cas los xij, txoj kev no muaj tus nqi pib siab dua li cov yav dhau los, txij li thaum cov pwm xav tau kev ua haujlwm CNC siab heev.
4. Winding Molding
Rau cov khoom uas muaj cov duab nyuaj lossis zoo li lub cev tig rov qab, lub tshuab cua filament tuaj yeem siv los ua qhov khoom los ntawm kev ntswj lub filament rau ntawm lub mandrel lossis lub hauv paus. Tom qab ntswj tag, kho lub mandrel thiab tshem tawm. Piv txwv li, cov caj npab sib koom ua ke siv rau hauv cov tshuab ncua kev kawm tuaj yeem ua tau siv txoj kev no.
5. Kev Hloov Pauv Resin
Kev hloov pauv resin (RTM) yog ib txoj kev molding uas nrov heev. Nws cov kauj ruam yooj yim yog:
1. Muab cov ntaub carbon fiber phem uas tau npaj tseg rau hauv pwm thiab kaw lub pwm.
2. Muab cov kua thermosetting resin txhaj rau hauv nws, ua kom cov khoom siv reinforcing impregnate, thiab kho.
Cov Khoom ntawm Carbon Fiber Reinforced Polymer
(1) Lub zog siab thiab elasticity zoo.
Lub zog tshwj xeeb (uas yog, qhov piv ntawm lub zog tensile rau qhov ceev) ntawm carbon fiber yog 6 npaug ntawm cov hlau thiab 17 npaug ntawm cov txhuas. Lub modulus tshwj xeeb (uas yog, qhov piv ntawm Young's modulus rau qhov ceev, uas yog lub cim ntawm elasticity ntawm ib yam khoom) yog ntau dua 3 npaug ntawm cov hlau lossis txhuas.
Nrog lub zog tshwj xeeb siab, nws tuaj yeem dais tau lub nra hnyav ua haujlwm. Nws qhov siab tshaj plaws ua haujlwm tuaj yeem ncav cuag 350 kg / cm2. Tsis tas li ntawd, nws yog qhov compressible thiab resilient dua li F-4 ntshiab thiab nws cov braid.
(2) Kev ua haujlwm zoo thiab kev tiv thaiv kev qaug zog.
Nws qhov kev tiv taus qaug zog siab dua li ntawm epoxy resin thiab siab dua li ntawm cov khoom siv hlau. Cov fibers graphite yog cov roj nplua nyeem thiab muaj cov coefficient me me ntawm kev sib txhuam. Qhov hnyav ntawm kev hnav yog 5-10 npaug me dua li ntawm cov khoom siv asbestos dav dav lossis F-4 braids.
(3) Kev ua tau zoo ntawm cov thermal thiab kev ua haujlwm kub.
Cov yas ua los ntawm cov roj carbon fiber muaj cov thermal conductivity zoo, thiab cov cua sov uas tsim los ntawm kev sib txhuam yooj yim yaj. Sab hauv tsis yooj yim rau overheat thiab khaws cia cua sov thiab siv tau ua cov khoom siv sealing dynamic. Hauv huab cua, nws tuaj yeem ua haujlwm ruaj khov hauv qhov kub ntawm -120 ~ 350 ° C. Nrog rau kev txo qis ntawm cov hlau alkali hauv cov roj carbon fiber, qhov kub ntawm kev pabcuam yuav nce ntxiv. Hauv cov roj inert, nws qhov kub hloov pauv tau tuaj yeem ncav cuag li 2000 ° C, thiab nws tuaj yeem tiv taus kev hloov pauv sai hauv qhov txias thiab cua sov.
(4) Kev co zoo tsis kam.
Nws tsis yooj yim rau resonate lossis flutter, thiab nws kuj yog ib qho khoom siv zoo heev rau kev txo kev co thiab txo suab nrov.
Cov txiaj ntsig ntawm CFRP
1. Lub teeb yuag
Cov yas ua los ntawm cov iav fiber ntau ib txwm siv cov iav fiber tas mus li thiab 70% iav fiber (qhov hnyav iav / qhov hnyav tag nrho) thiab feem ntau muaj qhov ceev ntawm 0.065 phaus ib cubic inch. Ib qho CFRP composite nrog tib 70% fiber hnyav feem ntau muaj qhov ceev ntawm 0.055 phaus ib cubic inch.
2. Muaj Zog Siab
Txawm hais tias cov polymers uas muaj carbon fiber reinforced yog cov uas tsis hnyav, CFRP composites muaj zog dua thiab tawv dua ib qho hnyav dua li cov iav fiber composites. Piv nrog cov khoom siv hlau, qhov zoo no pom tseeb dua.
Qhov tsis zoo ntawm CFRP
1. Tus nqi siab
Tus nqi tsim cov yas uas muaj carbon fiber ntau ntxiv yog qhov tsis txaus ntseeg. Tus nqi carbon fiber tuaj yeem sib txawv ntau heev nyob ntawm seb muaj pes tsawg yam khoom siv thiab xav tau, hom carbon fiber (aerospace piv rau qib lag luam), thiab qhov loj ntawm cov fiber ntau. Yog hais txog phaus rau phaus, cov carbon fiber tshiab tuaj yeem kim dua 5 txog 25 npaug ntau dua li cov iav fiber. Qhov sib txawv no tseem loj dua thaum piv rau hlau rau CFRP.
2. Kev coj ua
Qhov no yog qhov zoo thiab qhov tsis zoo ntawm cov ntaub ntawv carbon fiber composite. Nws nyob ntawm daim ntawv thov. Cov carbon fibers yog cov conductive heev thiab cov iav fibers yog insulating. Ntau yam khoom siv fiberglass es tsis txhob carbon fiber lossis hlau vim lawv xav tau kev rwb thaiv tsev nruj. Hauv kev tsim cov khoom siv hluav taws xob, ntau yam khoom xav tau kev siv cov iav fibers.
Cov Khoom Siv Yas Uas Muaj Carbon Fiber Reinforced
Cov ntawv thov ntawm cov roj carbon fiber reinforced polymer yog dav hauv lub neej, los ntawm cov khoom siv kho tshuab mus rau cov ntaub ntawv tub rog.
(1)raws li kev ntim khoom sealing
Cov khoom siv PTFE uas muaj carbon fiber ntxiv rau tuaj yeem ua rau cov nplhaib sib khi lossis cov khoom ntim uas tiv taus xeb, hnav tsis taus, thiab kub tsis taus. Thaum siv rau kev sib khi zoo li qub, lub neej ua haujlwm ntev dua, ntau dua 10 npaug ntev dua li cov khoom ntim asbestos uas siv roj. Nws tuaj yeem tswj tau kev ua haujlwm sib khi hauv qab kev hloov pauv ntawm qhov hnyav thiab txias sai thiab cua sov sai. Thiab vim tias cov khoom tsis muaj cov tshuaj corrosive, yuav tsis muaj xeb pitting ntawm cov hlau.
(2)ua qhov sib tsoo
Siv nws cov khoom siv lubricating, nws tuaj yeem siv ua bearings, iav, thiab piston rings rau cov hom phiaj tshwj xeeb. Xws li cov bearings tsis muaj roj lubricated rau cov cuab yeej aviation thiab cov ntaub ntawv kaw suab, cov iav tsis muaj roj lubricated rau cov tsheb ciav hlau hluav taws xob diesel (kom tsis txhob muaj xwm txheej los ntawm kev xau roj), cov piston rings tsis muaj roj lubricated ntawm compressors, thiab lwm yam. Tsis tas li ntawd, nws kuj tuaj yeem siv ua cov bearings swb lossis cov foob hauv kev lag luam zaub mov thiab tshuaj los ntawm kev siv nws cov yam ntxwv tsis muaj tshuaj lom.
(3) Ua cov ntaub ntawv siv rau kev tsim kho aerospace, aviation, thiab missile. Nws tau siv thawj zaug hauv kev tsim dav hlau los txo qhov hnyav ntawm lub dav hlau thiab txhim kho kev ya dav hlau. Nws kuj tseem siv rau hauv tshuaj lom neeg, roj av, hluav taws xob, tshuab, thiab lwm yam lag luam ua lub foob pob hluav taws xob lossis lub foob pob hluav taws xob rov qab lossis ntau yam khoom siv foob pob hluav taws xob.
Zhengxi yog ib tug kws tshaj lijHoobkas hydraulic xovxwm hauv Suav teb, muab kev zoo siabsib xyaw ua ke hydraulic xovxwmrau kev tsim cov khoom CFRP.
Lub sijhawm tshaj tawm: Tsib Hlis-25-2023
