Cov yam ntxwv, kev siv thiab kev loj hlob ntawm carbon fiber

Cov yam ntxwv, kev siv thiab kev loj hlob ntawm carbon fiber

1.Cov yam ntxwv thiab cov khoom ntawm carbon fiber

 Cov khoom siv carbon fiber yog dub, tawv, siab zog, lub teeb yuag thiab lwm yam ntaub ntawv tshiab nrog zoo heev mechanical zog.Nws lub ntiajteb txawj nqus yog tsawg dua 1/4 ntawm cov hlau.Lub zog tensile ntawm carbon fiber resin cov ntaub ntawv feem ntau yog siab dua 35000MPa, 7.9 npaug ntawm cov hlau.Lub tensile modulus ntawm elasticity yog nruab nrab ntawm 230000MPa thiab 430000MPa.Yog li, lub zog tshwj xeeb ntawm CFRP, uas yog, qhov sib piv ntawm lub zog ntawm cov khoom siv rau nws qhov ceev, yog siab dua 20000MPa / (g / cm3), tab sis lub zog tshwj xeeb ntawm A3 steel yog 590MPa / (g / cm3) Qhov tshwj xeeb. elastic modulus kuj siab dua li cov hlau.Qhov siab dua qhov tshwj xeeb lub zog ntawm cov khoom, qhov me me ntawm tus kheej qhov hnyav ntawm qhov, qhov siab dua qhov tshwj xeeb elastic modulus, qhov ntau dua qhov rigidity ntawm qhov.Hauv qhov kev nkag siab no, qhov kev thov dav dav ntawm cov pa roj carbon fiber hauv engineering tau qhia.Saib ntawm cov khoom zoo heev ntawm ntau cov ntaub ntawv sib xyaw, xws li Polymer composite iav fiber ntau cov khoom, hlau-raws li cov ntaub ntawv sib xyaw, thiab ceramic-based composite cov ntaub ntawv, ntau tus kws tshaj lij kwv yees tias cov ntaub ntawv sib xyaw yuav nkag mus rau lub sijhawm ntawm kev siv cov khoom siv dav siv los ntawm lub hnub nyoog ntawm cov hlau.

PAN carbon fiber thiab fiberglass composite cov ntaub ntawv:

(1) Cov khoom siv kho tshuab, qis dua cov hlau, lub teeb yuag;siab modulus, siab rigidity, siab zog, siab qaug zog lub zog, zoo heev hnav kuj thiab lubricity;zoo heev vibration attenuation;

(2) Me me tshav kub tsis kam, stability, thermal expansion coefficient, zoo seem stability, thermal conductivity;zoo heev kub tsis kam nyob rau hauv inert gas;

(3) Nws belongs rau ntau yam ntaub ntawv conductive uas muaj hluav taws xob conductivity thiab electromagnetic yoj shielding zog, thiab hluav taws xob conductivity thiab electromagnetic yoj shielding zog.(4) Nws yog qhov zoo heev hauv kev xa hluav taws xob xoo hluav taws xob, thiab cov qauv tsim nyog tuaj yeem tsim raws li lub hom phiaj.

Xyoo 2007, Nyiv lub ntsiabCarbon fiber ntau tus neeg muag khoomToray Co., Ltd. tau koom tes nrog Nissan Motor thiab lwm lub tuam txhab los tsim cov khoom siv hluav taws xob uas siv cov pa roj carbon fiber ntau, uas tuaj yeem txo qhov hnyav ntawm qhov tseem ceeb ntawm lub tsheb, xws li lub chassis.Cov thev naus laus zis tshiab txo qhov hnyav tag nrho ntawm lub tsheb los ntawm 10% thiab txhim kho kev siv roj los ntawm 4% mus rau 5%.Tsis tas li ntawd, qhov cuam tshuam tsis kam yog 1.5 npaug ntawm cov pa ib txwm.Cov neeg tsim khoom npaj yuav coj cov thev naus laus zis tshiab rau kev lag luam tsheb hauv peb lub xyoos.Cov thev naus laus zis tshiab tau cog lus tias yuav ua kom lub zog hloov pauv ntawm steel-centric automotive raw cov ntaub ntawv tiv thaiv cov keeb kwm yav dhau los ntawm cov cai nruj dua cov nqi roj los txo cov roj tsev cog khoom thoob ntiaj teb.

2.Kev siv cov carbon fiber

  Cov pa roj carbon fiber ntau yog cov ntsiab lus dav dav rau fibers nrog cov ntsiab lus carbon ntau dua 90%, thiab muaj npe rau nws cov ntsiab lus siab carbon.Cov pa roj carbon fiber ntau muaj cov khoom zoo heev ntawm cov pa roj carbon monoxide, xws li lub ntiajteb txawj nqus me me, kub tsis kam, thermal shock tsis kam, tshuaj tiv thaiv thiab conductivity, thiab lwm yam.Tshwj xeeb, nws lub zog tshwj xeeb thiab tshwj xeeb elastic modulus yog siab, thiab nws tuaj yeem tiv taus qhov kub siab ntawm 2000 nyob rau hauv cov xwm txheej ntawm kev cais cov pa oxygen.Nws yog ib qho tseem ceeb muaj fiberglass raw khoomthiab yog tsim rau ntxiv dag zog rau cov khoom sib xyaw, cov ntaub ntawv ablation, thiab cov ntaub ntawv rwb thaiv tsev kub.Qhov no yog ib yam khoom tshiab tsim nyob rau hauv thaum ntxov 1960s thiab tam sim no tau dhau los ua ib yam khoom tshiab tseem ceeb hauv lub neej niaj hnub no.

Ntawm cov khoom ua si, thawj daim ntawv thov ntawm PAN carbon fiber yog tus pas nuv ntses.Tam sim no, lub ntiaj teb cov khoom tsim tawm txhua xyoo ntawm carbon fiber nuv ntses pas nrig yog kwv yees li 12 lab, thiab cov khoom siv carbon fiber ntau yog kwv yees li 1,200 tons.Daim ntawv thov ntawm carbon fiber nyob rau hauv golf clubs pib nyob rau hauv 1972. Tam sim no, txhua xyoo tso zis ntawm fibra de carbonCov koom haum ntaus golf hauv ntiaj teb yog kwv yees li 40 lab lub raj mis, thiab cov pa roj carbon fiber ntau sib npaug li 2,000 tons.Daim ntawv thov kev ntaus pob tesniv pib xyoo 1974. Tam sim no, lub ntiaj teb tau tsim txog 4.5 lab carbon fiber rackets xyoo tas los, thiab kev siv cov pa roj carbon fiber ntau yuav tsum muaj txog 500 tons.Ntawm lwm yam, carbon fiber kuj tau siv dav hauv kev caij skis, nkoj daus, caij ski sticks, ntaus pob baseball, kev ua si, thiab kev ua si hauv hiav txwv.

Paub txog lub teeb yuag, qaug zog, tiv thaiv corrosion thiab lwm yam khoom ntawm carbon fiber, nws yog dav siv hauv kev lag luam aerospace.Nyob rau hauv lub tshav dav hlau ntawm qhov chaw davhlau, high-modulus carbon fibers tau siv nyob rau hauv dag satellites vim lawv lub teeb yuag (rigidity) thiab thermal conductivity ntawm seem stability.Nyob rau hauv xyoo tas los no, lawv tau siv hauv kev sib txuas lus satellites xws li iridium.

Lub molding compound yog tsuas yog tov rau hauv cov thermoplastic resin nyob rau hauv daim ntawv ntawmiav fiber tws strands, uas muaj cov nyhuv ntawm kev ntxiv dag zog, tiv thaiv zoo li qub thiab electromagnetic yoj shielding, thiab yog siv dav hauv cov khoom siv hauv tsev, khoom siv hauv chaw ua haujlwm, semiconductors thiab lwm yam.

3.Qhov xwm txheej ntawm cov khoom siv carbon fiber ntau hauv kuv lub tebchaws

  Kev tsim thiab siv cov pa roj carbon fiber ntau hauv kuv lub tebchaws tseem nyob rau theem pib.Lub peev xwm tsim khoom ntawm cov pa roj carbon fiber hauv tsev tsuas yog kwv yees li 0.4% ntawm tag nrho cov khoom tsim tawmkev ua haujlwm siab carbon fiber ntaubnyob rau hauv lub ntiaj teb no, thiab ntau tshaj li 90% ntawm domestic noj nyob rau hauv imports.Qhov zoo ntawm PAN precursor yeej ib txwm yog lub hauv paus caj dab txwv qhov loj-scale zus tau tej cov carbon fiber kev lag luam nyob rau hauv kuv lub teb chaws.Tsis tas li ntawd, vim tias carbon fiber tau ntev tau suav tias yog cov khoom siv tswv yim, cov teb chaws tsim tau raug kaw rau sab nraud.Yog li ntawd, cov kws tshaj lij kev lag luam ntseeg tias kev txhawb nqa kev tshawb fawb hauv paus yog lub hauv paus ntawm kev tsim kho tshiab thiab txoj hauv kev los tsim kev lag luam carbon fiber hauv tsev.

Kuv lub teb chaws pib kawm carbon fiber los ntawm 1960s mus rau 1970s, yuav luag ua raws li lub ntiaj teb.Tom qab ntau tshaj 30 xyoo ntawm kev ua haujlwm nyuaj, Nyiv lub Tuam Txhab Toray tau tsim cov khoom siv carbon fiber ze rau qib T300, tab sis cov khoom tsim tawm thiab cov khoom zoo tsis tuaj yeem ua tau raws li qhov xav tau hauv tsev, uas nyob deb ntawm txawv teb chaws.Piv nrog rau qib siab thoob ntiaj teb, cov teeb meem zoo tshaj plaws ntawm cov pa roj carbon fiber ntau hauv tsev yog cov roj carbon fiber tsawg, tsis zoo ib yam thiab ruaj khov, thiab qib kev loj hlob yog ze li ntawm 20 mus rau 30 xyoo tom qab ntawm cov teb chaws siab heev, thiab cov khoom siv me me, cov cuab yeej siv tau zoo. yog rov qab, thiab ntau lawm efficiency yog tsis zoo.

Tam sim no, lub ntiaj teb fibra de carbon pret muaj peev xwm ntau lawm yog li ntawm 35,000 tons, thiab qhov kev thov txhua xyoo hauv Suav lag luam yog li 6,500 tons.Nws yog cov neeg siv khoom loj carbon fiber ntau.Txawm li cas los xij, Tuam Tshoj cov pa roj carbon fiber ntau tso tawm hauv xyoo 2007 tsuas yog kwv yees li 200 tons, thiab cov khoom lag luam ua haujlwm tsawg.Feem ntau ntawm kev lag luam cia siab rau kev xa tawm, thiab tus nqi yog kim heev.Piv txwv li, tus qauv T300 kev ua lag luam tsis muaj kev txhawb nqa nrog kev ywj pheej cov cuab yeej cuab tam, thiab cov tuam txhab lag luam hauv tsev tseem tsis tau paub txog kev ua tiav cov tshuab carbon fiber ntau.Qhov zoo, technology thiab ntau lawm scale ntawm carbon fiber nyob rau hauv kuv lub teb chaws txawv heev ntawm cov nyob rau txawv teb chaws.Ntawm lawv, kev ua haujlwm siab carbon fiber ntau yog monopolized thiab thaiv los ntawm Nyiv thiab Western lub teb chaws.Yog li ntawd, nws yuav siv sij hawm ntev txheej txheem kom paub qhov chaw ntawm carbon fiber.Vim tias tsis muaj kev lag luam, tau muaj "cov pa roj carbon fiber ntau" hauv Suav teb xyoo tas los no, thiab ntau lub koom haum tshawb fawb thiab kev lag luam tau pib tshawb nrhiav carbon fiber ntau thiab ntau txhiab tons ntawm kev lag luam.

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