Nrog rau kev txhim kho txuas ntxiv ntawm cov ntaub ntawv sib xyaw, ntxiv rau cov iav fiber ntau cov yas, carbon fiber-reinforced plastics, boron fiber-reinforced plastics, thiab lwm yam tau tshwm sim.Carbon fiber reinforced polymerComposites (CFRP) yog cov khoom hnyav 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 txog cov khoom siv fiber ntau siv cov khoom siv uas siv cov fibers ua cov khoom siv tseem ceeb.
Cov ntsiab lus:
1. Carbon Fiber Reinforced Polymer Structure
2. Txoj Kev Moulding ntawm Carbon Fiber Reinforced Yas
3. Cov khoom ntawm Carbon Fiber Reinforced Polymer
4. Qhov zoo ntawm CFRP
5. Qhov tsis zoo ntawm CFRP
6. Carbon Fiber Reinforced yas siv
Carbon Fiber Reinforced Polymer Structure
Carbon fiber reinforced yas yog cov khoom tsim los ntawm kev npaj cov ntaub ntawv carbon fiber nyob rau hauv ib qho kev taw qhia thiab siv cov ntaub ntawv polymer sib txuas.Txoj kab uas hla ntawm carbon fiber yog nyias nyias, txog 7 microns, tab sis nws lub zog yog siab heev.
Cov khoom siv tseem ceeb tshaj plaws ntawm cov pa roj carbon fiber ntau cov khoom sib xyaw yog cov pa roj carbon fiber ntau.Cov khoom siv tseem ceeb ntawm carbon filament yog prepolymer polyacrylonitrile (PAN), rayon, lossis roj av suab.Cov pa roj carbon filaments yog tom qab ntawd ua rau hauv cov ntaub ntawv carbon fiber ntau los ntawm kev siv tshuaj thiab kev siv tshuab rau carbon fiber ntau.
Lub khi polymer 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 nrog rau cov roj carbon fibers, cov khoom sib xyaw kuj tuaj yeem muaj aramid Q, ultra-high molecular hnyav polyethylene, aluminium, lossis iav fibers.Cov khoom ntawm cov khoom siv carbon fiber zaum kawg kuj tuaj yeem cuam tshuam los ntawm hom additives nkag mus rau hauv kev sib raug zoo matrix.
Txoj Kev Moulding ntawm Carbon Fiber Reinforced Plastic
Cov khoom siv carbon fiber ntau yog sib txawv vim muaj cov txheej txheem sib txawv.Muaj ntau txoj hauv kev los ua cov khoom siv carbon fiber reinforced polymer.
1. Tes Lay-up Method
Muab faib rau hauv txoj kev qhuav (khoom ua ntej npaj) thiab txoj kev ntub dej (fiber fabric thiab resin glued to use).Tes nteg-up kuj yog siv los npaj prepregs rau siv nyob rau hauv lwm yam molding txheej txheem xws li compression molding.Txoj kev no yog qhov uas cov nplooj ntawv ntawm cov ntaub ntawv carbon fiber yog laminated rau ntawm pwm los tsim cov khoom kawg.Lub zog thiab nruj zog ntawm cov khoom tsim tau zoo los ntawm kev xaiv qhov sib dhos thiab kev sib tsoo ntawm cov ntaub fibers.Tom qab ntawd cov pwm yog ntim nrog epoxy thiab kho nrog cua sov lossis cua.Txoj kev tsim khoom no feem ntau siv rau qhov tsis muaj kev ntxhov siab, xws li lub cav npog.
2. Lub tshuab nqus tsev txoj kev
Rau lub laminated prepreg, nws yog ib qho tsim nyog yuav tsum tau siv lub siab los ntawm ib qho txheej txheem los ua kom nws nyob ze rau cov pwm thiab kho thiab kho nws nyob rau hauv ib qho kub thiab siab.Lub tshuab nqus tsev txoj kev siv lub tshuab nqus tsev twj tso kua mis tawm sab hauv lub hnab tsim kom lub siab tsis zoo ntawm lub hnab thiab cov pwm tsim lub siab kom cov khoom sib xyaw nyob ze rau pwm.
Raws li txoj kev siv lub tshuab nqus tsev nqus tsev vacuum bag-autoclave forming method tau muab los tom qab.Autoclaves muab siab dua thiab kub kho qhov chaw (hloov ntawm ntuj curing) dua li txoj kev nqus hnab nkaus xwb.Xws li ib feem muaj ib tug ntau compact qauv, zoo deg zoo, muaj peev xwm tshem tawm cov pa npuas (npuas yuav zoo heev rau lub zog ntawm ib feem), thiab tag nrho cov zoo dua.Qhov tseeb, cov txheej txheem ntawm lub tshuab nqus tsev yog zoo ib yam li cov xov tooj ntawm tes zaj duab xis sticking.Tshem tawm cov npuas npuas yog ib txoj haujlwm tseem ceeb.
3. Txoj kev Compression Molding
Compression moldingyog ib txoj hauv kev molding uas yog qhov tsim nyog rau kev tsim khoom loj thiab ntau lawm.Pwm feem ntau yog ua los ntawm sab sauv thiab qis, uas peb hu ua txiv neej pwm thiab poj niam pwm.Cov txheej txheem molding yog muab cov lev ua los ntawm prepregs rau hauv cov hlau txee pwm, thiab nyob rau hauv qhov kev txiav txim ntawm tej yam kub thiab siab, lub lev yog rhuab thiab yas nyob rau hauv lub pwm kab noj hniav, ntws nyob rau hauv lub siab, thiab nyob rau hauv lub pwm kab noj hniav, thiab ces. Thiab molding thiab kho kom tau cov khoom.Txawm li cas los xij, txoj kev no muaj tus nqi pib ntau dua li yav dhau los, vim tias cov pwm yuav tsum tau ua haujlwm siab heev CNC machining.
4. Winding Moulding
Rau qhov chaw uas muaj cov duab nyuaj lossis cov duab ntawm lub cev ntawm kev hloov pauv, lub filament winder tuaj yeem siv los ua ib feem los ntawm winding lub filament ntawm ib lub mandrel lossis core.Tom qab winding yog tiav kho thiab tshem tawm lub mandrel.Piv txwv li, tubular sib koom caj npab siv nyob rau hauv kev ncua kev kawm ntawv yuav ua tau siv txoj kev no.
5. Resin Hloov Moulding
Resin hloov molding (RTM) yog ib txoj kev nrov molding.Nws cov theem pib yog:
1. Muab cov ntaub ntawv tsis zoo carbon fiber tso rau hauv pwm thiab kaw cov pwm.
2. Txhaj kua thermosetting resin rau hauv nws, impregnate cov khoom txhawb zog, thiab kho.
Cov khoom ntawm Carbon Fiber Reinforced Polymer
(1) Siab zog thiab zoo elasticity.
Lub zog tshwj xeeb (uas yog, qhov piv ntawm lub zog tensile rau qhov ntom ntom) ntawm carbon fiber yog 6 npaug ntawm cov hlau thiab 17 npaug ntawm txhuas.Qhov tshwj xeeb modulus (uas yog, qhov piv ntawm Young's modulus rau qhov ntom ntom, uas yog lub cim ntawm elasticity ntawm cov khoom) yog ntau tshaj 3 npaug ntawm cov hlau lossis txhuas.
Nrog lub zog tshwj xeeb, nws tuaj yeem ua haujlwm loj.Nws qhov siab tshaj plaws ua haujlwm siab tuaj yeem ncav cuag 350 kg / cm2.Tsis tas li ntawd, nws yog compressible thiab resilient dua li ntshiab F-4 thiab nws cov braid.
(2) Kev qaug zog zoo thiab hnav tsis kam.
Nws qhov qaug zog tsis kam yog siab dua li ntawm epoxy resin thiab siab dua li cov ntaub ntawv hlau.Graphite fibers yog tus kheej lubricating thiab muaj me me coefficient ntawm kev sib txhuam.Tus nqi hnav yog 5-10 npaug me dua li ntawm cov khoom siv asbestos lossis F-4 braids.
(3) Zoo thermal conductivity thiab kub tsis kam.
Carbon fiber reinforced plastics muaj cov thermal conductivity zoo, thiab cov cua sov uas tsim los ntawm kev sib txhuam yog yooj yim dissipated.Sab hauv tsis yooj yim rau overheat thiab khaws cov cua sov thiab tuaj yeem siv los ua cov khoom sib khi zoo.Hauv huab cua, nws tuaj yeem ua haujlwm ruaj khov hauv qhov kub ntawm -120 ~ 350 ° C.Nrog rau kev txo qis ntawm alkali hlau cov ntsiab lus hauv carbon fiber, qhov kev pabcuam kub tuaj yeem nce ntxiv.Hauv cov roj inert, nws qhov ntsuas kub hloov tau tuaj yeem ncav cuag li 2000 ° C, thiab nws tuaj yeem tiv taus cov kev hloov pauv hauv txias thiab kub.
(4) Zoo vibration kuj.
Nws tsis yooj yim rau resonate los yog flutter, thiab nws kuj yog ib qho khoom siv zoo heev rau kev vibration txo thiab txo suab nrov.
Qhov zoo ntawm CFRP
1. Lub teeb nyhav
Cov iav fiber ntau siv cov yas siv tas li iav fibers thiab 70% iav fibers (iav qhov hnyav / tag nrho qhov hnyav) thiab feem ntau muaj qhov ceev ntawm 0.065 phaus ib cubic nti.Ib qho CFRP composite nrog tib 70% fiber ntau qhov hnyav feem ntau muaj qhov ceev ntawm 0.055 phaus ib cubic nti.
2. Siab zog
Txawm hais tias carbon fiber reinforced polymers yog lub teeb yuag, CFRP composites muaj zog dua thiab nruj dua rau ib chav tsev hnyav dua li cov iav fiber ntau.Piv nrog cov ntaub ntawv hlau, qhov zoo dua no yog pom tseeb dua.
Disadvantages ntawm CFRP
1. Tus nqi siab
Cov nqi tsim khoom ntawm carbon fiber reinforced yas yog txwv tsis pub.Cov nqi carbon fiber ntau tuaj yeem sib txawv raws li kev lag luam tam sim no (muab khoom thiab xav tau), hom carbon fiber (aerospace vs. coj mus muag qib), thiab qhov loj ntawm fiber ntau pob.Nyob rau hauv phaus-rau-phaus, nkauj xwb carbon fiber yuav ua tau 5 mus rau 25 npaug ntau kim dua iav fiber ntau.Qhov sib txawv no tseem ntau dua thaum piv cov hlau rau CFRP.
2. Kev coj ua
Qhov no yog qhov zoo thiab qhov tsis zoo ntawm cov khoom siv carbon fiber ntau.Nws nyob ntawm daim ntawv thov.Cov pa roj carbon fibers yog cov conductive heev thiab iav fibers yog insulating.Ntau cov khoom siv fiberglass es tsis txhob carbon fiber los yog hlau vim lawv xav tau kev rwb thaiv tsev nruj.Hauv kev tsim cov khoom siv hluav taws xob, ntau cov khoom yuav tsum tau siv cov iav fibers.
Carbon Fiber Reinforced yas siv
Covkev siv ntawm carbon fiber reinforced polymeryog dav hauv lub neej, los ntawm cov khoom siv tshuab mus rau cov khoom siv tub rog.
(1)raws li sealing packing
Carbon fiber reinforced PTFE khoom tuaj yeem ua rau corrosion-resistant, hnav-resistant, thiab kub-resistant sealing rings los yog ntim.Thaum siv rau kev sib khi zoo li qub, kev pabcuam lub neej ntev dua, ntau dua 10 npaug ntev dua li cov roj ntim asbestos dav dav.Nws tuaj yeem tswj xyuas kev sib khi ua haujlwm raws li kev hloov pauv thiab ua kom txias sai thiab cua sov sai.Thiab txij li cov khoom siv tsis muaj cov tshuaj corrosive, tsis muaj pitting corrosion yuav tshwm sim ntawm cov hlau.
(2)raws li kev sib tsoo qhov chaw
Siv nws tus kheej-lubricating zog, nws yuav siv tau raws li bearings, zog, thiab piston rings rau tshwj xeeb hom phiaj.Xws li roj-dawb lubricated bearings rau aviation seev thiab daim kab xev recorders, roj-dawb lubricated iav rau hluav taws xob kis tau tus mob diesel locomotives (kom tsis txhob muaj xwm txheej los ntawm cov roj to), roj-dawb lubricated piston rings ntawm compressors, thiab lwm yam. kuj tseem siv tau los ua zawv zawg bearings lossis cov ntsaws ruaj ruaj hauv cov khoom noj thiab tshuaj lag luam los ntawm kev siv nws cov yam ntxwv tsis muaj tshuaj lom.
(3) Raws li cov khoom siv rau aerospace, aviation, thiab missiles.Nws yog thawj zaug siv nyob rau hauv aircraft tsim los txo qhov hnyav ntawm lub dav hlau thiab txhim kho kev ya davhlau.Nws kuj yog siv rau hauv tshuaj, roj av, hluav taws xob, tshuab, thiab lwm yam kev lag luam raws li ib tug teb los yog reciprocating dynamic foob los yog ntau yam static seal ntaub ntawv.
Zhengxi yog tus kws tshaj lijhydraulic xovxwm Hoobkas nyob rau hauv Suav teb, muab high-qualitycomposite hydraulic xovxwmrau tsim CFRP cov khoom.
Post lub sij hawm: May-25-2023
