Suam ntawm cov pa roj carbon fibers thiab Scope ntawm cov ntaub ntawv ntawm ntau hom ntawm cov pa roj carbon fibers

Inorganic polymer fibers nrog carbon cov ntsiab lus saum toj no 90%. Cov pa roj carbon cov ntsiab lus yog siab tshaj 99 %% ntawm lub graphite fibers. Lub axial zog thiab modulus ntawm carbon fibers yog high, tsis muaj nkag los, zoo nkees kuj, Thaum tshav kub kub thiab conductivity ntawm nonmetal thiab hlau, thermal expansion coefficient yog me me, corrosion kuj, fiber ceev yog tsawg tsawg, x-ray permeability yog zoo. Tab sis tej yam kuj yog neeg pluag, ib qho yooj yim mus kev puas tsuaj, oxidation nyob rau hauv cov nyhuv ntawm muaj zog acid, thiab hlau puas yuav tshwm sim thaum hlau carbonization, carburizing thiab electrochemical xeb phenomenon. Yog li ntawd, tus nto kev kho mob ntawm cov pa roj carbon fibers yog yuav tsum tau ua ntej yuav siv. Carbon fiber ntau yuav nyias siv polyacrylonitrile fiber, asphalt fiber, viscose txhob lo lo ntxhuav los yog phenolic fiber los ntawm carbonization, raws li lub xeev no tau muab faib mus rau hauv filament, luv luv fiber ntau thiab staple fiber; Raws li txhua yam khoom ntawm lub tuam thiab high-kev ua tau zoo hom. Lub zog ntawm cov general-lub hom phiaj carbon fiber yog 1000 MPA, lub modulus yog hais txog 100GPa. High-kev ua tau zoo carbon fibers yog tseem muab faib ua high-zog hom (lub zog 2000MPa, modulus 250GPa) thiab ntau dua qauv (modulus 300GPa saum toj no). Lub zog yog ntau tshaj 4000MPa, kuj hu ua ultra high-zog hom; Lub modulus yog loj tshaj 450GPa hu ua lub cus qauv. Nrog rau txoj kev loj hlob ntawm tus khoos kas aerospace thiab Aerospace kev lag luam, high-zog thiab elongation ntawm carbon fibers tau sawv, nrog rau cov elongation ntawm ntau tshaj 2%. Qhov siab tshaj plaws ntau npaum yog polyacrylonitrile-raws li carbon fibers. Carbon fibers thiaj yuav tiav rau hauv fabrics, mats, mats, koj cov menyuam, ntawv thiab lwm yam ntaub ntawv. Carbon fiber ntau yog siv nyob rau hauv tas li ntawd mus rau lub rwb thaiv tsev ntaub, feem ntau nyob ib leeg, raws li ib tug qhov cuab lub zog cov ntaub ntawv uas muab ntxiv rau qhov cob, hlau, ceramics, vaj tse thiab lwm yam ntaub ntawv, txoj kev composites. Carbon fiber ntau tam composites yuav siv tau raws li aircraft ntxwv cov ntaub ntawv, electromagnetic shielding cov ntaub ntawv, dag ligament thiab lwm yam kev hloov cov ntaub ntawv, raws li tau zoo raws li qhov siv thiab ua foob pob ua ntxaij zoo li, mobile tej nkoj nquam, muaj robots, automotive nplooj springs thiab tsav shafts. Carbon fibers mas muab faib ua polyacrylonitrile (YIAS) -Zaj no muaj nyob carbon fibers thiab suab-raws li carbon fibers raws li cov ntaub ntawv sib txawv thiab ntau lawm txoj kev. Carbon fiber ntau cov khoom xws li yias-raws li carbon fibers (high-zog) thiab suab-raws li carbon fibers (heev elastic). Ntau hom kev resins kuj xyuas kom meej tias lawv muaj ib tug zoo allergic ntxim rau cov vaj tse, xws li substrate txheej resins, thiab adhesion rau carbon fiber los xij thiab qhob lug, xws li epoxy tsevneeg resins. Tsuas yog cia siab rau cov pa roj carbon fiber ntawv nws tus kheej tsis muaj peev xwm tag nrho pheev nws muaj zog txhua yam khoom thiab superior durability, tsuas yog los ntawm cov epoxy cob coated carbon fiber ntawv adhesion rau ntawm qhov chaw ntawm kev reinforced qauv thiab zoo ua ke nrog rau cov tsim ntawm ib tug tag nrho ua hauj lwm ua ke kom ua tau lub lub hom phiaj ntawm reinforcing. Yog li ntawd, qhov kev kawm ntawm epoxy resins yog ib tug ntawm cov tseem ceeb tshaj plaws hauv lub lag luam. Epoxy resins muaj ntau zog vim hais tias ntawm ntau hom, thiab hloov mus rau txawv uas yuav tsum tau ntawm ntau qhov chaw. Piv txwv li, lub substrate txheej cob muaj ib tug zoo allergic cov nyhuv ntawm qhob, yuav txeem mus rau hauv lub pob zeb tob; lub epoxy cob coated nrog CFRP yog ib qho yooj yim mus rau "txeem" cov pa roj carbon fiber daim ntawv thiab muaj muaj zog adhesion. Nyob rau hauv lub kub ntawm kev siv, resin yog tseem muab faib mus rau hauv lub caij ntuj sov thiab lub caij ntuj no hauv chav kawm ntawv resins. Carbon fiber ntaub ntawv no yog muab piv nrog rau lwm cov txhawb cov ntaub ntawv. (1) Tensile zog: Lub tensile lub zog ntawm cov pa roj carbon fiber yog hais txog 10 lub sij hawm lub sij hawm lub hlau. (2) Elastic modulus: Lub tensile modulus ntawm carbon fiber composites yog siab tshaj hlau, tab sis lub tensile modulus ntawm Aramid thiab fiberglass composites yog ib nrab xwb thiab ib-plaub ntawm hlau. (3) Qaug zog: Lub qaug zog lub zog ntawm cov pa roj carbon fiber ntau thiab aramid fiber composites yog siab tshaj uas ntawm siab zog. Nyob rau hauv cov nyhuv ntawm alternating kev nyuaj siab, nkees heev txwv tsuas yog lub 30% ~ 40% ntawm zoo li qub load. Vim hais tias cov fiber ntau thiab matrix puas yuav alleviate cov keej hais tawm, raws li tau zoo raws li lub tau hais tias lub fiber nrog quab yuam redistribution, nkees heev tsis pub tshaj ntawm composites yog ntau dua, lub 70% ~ 80% ntawm zoo li qub load zog yog hais txog, thiab muaj ib tug zoo kawg li hais txog ntawm deformation ua ntej kev puas tsuaj. (4) Nyhav: txog ib-thib tsib ntawm hlau. (5) piv nrog CFRP los xij: carbon fiber los xij yuav tsum Document nyob rau hauv structural chaw ntawm ntau yam nrhiav, whereas daim hlau muaj ntau haum rau kev tivthaiv chaw. Nyob rau hauv tas li ntawd, vim hais tias cov substrate cob muab tshuaj txhuam yog ntau tshaj li tus nqi ntawm cov ntawv, thickness, thiab lub pob zeb interface adhesion zog ntawm daim ntawv.