Dab tsi yog chopped carbon fiber?

Chopped carbon fiber yog carbon fiber uas txiav luv luv. Ntawm no cov pa roj carbon fiber ntau tsuas yog hloov pauv morphological, los ntawm carbon fiber filament mus rau hauv ib qho luv luv filament, tab sis qhov kev ua tau zoo ntawm luv luv carbon fiber nws tus kheej tsis tau hloov. Yog li vim li cas koj thiaj xav txiav ib qho zoo filament luv?
Ua ntej tshaj plaws, peb yuav tsum pib los ntawm cov txheej txheem molding ntawm cov khoom sib xyaw. Feem ntau carbon fiber filament yuav tsum tau woven rau hauv carbon fiber ntaub los yog ua rau carbon fiber prepreg, thiab ces los ntawm lubmolding txheej txheem, RTM, nqus hnab ntim, kub xovxwm cov kaus poom thiab lwm yam txheej txheemnyob rau hauv ntau yam carbon fiber composite khoom. Tau kawg, kuj tseem muaj qee cov txheej txheem molding uas tsis tas yuav tsum muaj cov ntaub ntawv nruab nrab, ncaj qha los ntawm carbon fiber filament rau molding, xws li pultrusion molding, winding molding thiab lwm yam.
Cov pa roj carbon fiber woven rau hauv cov ntaub ntawv carbon fiber los yog ua rau hauv prepreg, mus ua cov khoom, muaj ib tug natural tsis zoo, yog tsis zoo rau lo pwm. Lub neej ntawm cov pwm yog muab cov duab rau cov khoom sib xyaw, cov pwm muaj cov duab zoo li cas, cov khoom sib xyaw zaum kawg kuj muaj qhov zoo li cas. Txawm li cas los xij, yog tias cov ntaub ntawv carbon fiber ntau lossis prepreg tsis haum cov pwm zoo, cov duab ntawm cov khoom sib xyaw tsis haum rau cov pwm. Tsis tas li ntawd, nyob rau qee qhov chaw, cov ntaub ntawv carbon fiber yog yooj yim rau kev txuas, tsim cov kab noj hniav hauv zos, uas thaum kawg ua rau kev poob qis ntawm cov khoom siv carbon fiber ntau.
Cov pa roj carbon fiber ntau hauv cov ntaub ntawv carbon fiber los yog prepreg yog khi thiab tsis yooj yim txav. Tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm lub siab, cov resin thiab carbon fiber filament mobility yog heev tsis zoo, uas nws thiaj li ua rau molding nyuaj los yog kev ua tau zoo degradation.
Qhov luv luv qhov ntev, qhov zoo dua qhov fluidity ntawm covchopped carbon fiber ntau. Nws yuav tsum paub tias kev txhaj tshuaj molding yog qhov siv dav tshaj plaws thiab paub tab technology hauv cov txheej txheem yas molding. Yog tias siv rau kev tsim cov khoom siv sib xyaw, nws yuav yog qhov hloov pauv radical.
Txawm li cas los xij, qhov ntev ntawm cov pa roj carbon fiber ntau tsis tuaj yeem txo qis, vim tias qhov luv luv ntawm cov pa roj carbon fiber ntau, cov resin thiab carbon fiber sib txuas yuav ua rau tsis muaj zog. Vim tias daim ntawv cog lus ntawm resin thiab carbon fiber yog ncaj qha proportional rau qhov chaw sib cuag ntawm lawv, yog tias qhov ntev yog luv, ces qhov chaw tiv tauj yog txo qis.
Tom qab ntawd muaj qhov tsis sib xws ntawm no, uas yog, qhov tsis sib xws ntawm qhov kev ua tau zoo ntawm qhov luv-txiav fiber ntau thiab kev txav mus los. Qhov ntev ntawm fiber ntau, qhov tsis tshua muaj kev sib cais, fiber ntau thiab fiber ntau yog yooj yim rau knot, tab sis lub zog fiber ntau thiab resin ua ke, tawm ntawm cov khoom sib xyaw ua haujlwm yuav siab dua. Qhov luv luv ntawm fiber ntau, qhov yooj yim dua nws tawg, nrog zoo flowability, tab sis cov fiber thiab resin daim ntawv cog lus yog me ntsis qaug zog. Yuav ua li cas sib npaug qhov kev tsis sib haum xeeb, yuav tsum tau kawm, feem ntau, ua luv luv-txiav carbon fiber reinforced yas pellets, qhov ntev ntawm 1-9mm ntau yam.
Kuj tseem muaj txoj hauv kev los txhim kho lub zog sib txuas ntawm carbon fiber thiab resin, uas yog tus neeg sawv cev sizing. Feem ntau, muaj ib tug sizing tus neeg saib xyuas ntawm qhov chawcarbon fiber ntauHoobkas, uas yog siv los tiv thaiv cov pa roj carbon fiber ntau los ntawm linting nyob rau hauv cov txheej txheem ntawm packing, hloov thiab kev khiav hauj lwm, thiab ntawm qhov tod tes, nws yog siv los ua ke cov pa roj carbon fiber ntau thiab cov resin, thiab ua lub luag hauj lwm ntawm kev txhim kho kev sib raug zoo zog.
Txawm li cas los xij, tus neeg sawv cev sizing no yog qhov tseem ceeb rau thermosetting resin. Feem ntau ntawm cov resins siv los ua pellets yog cov thermoplastic resins, yog li tus neeg sawv cev sizing yuav tsum tau hloov kho. Ib qho yog los hlawv tus thawj sizing tus neeg sawv cev thiab ua ib txheej tshiab ntawm sizing tus neeg sawv cev. Ib qho yog los hlawv tus thawj sizing tus neeg sawv cev thiab ua ib txheej tshiab ntawm sizing tus neeg sawv cev; lwm tus yog sizing tus neeg sawv cev dua nyob rau hauv lub hauv paus ntawm tus thawj sizing tus neeg saib xyuas, uas yog hu ua secondary sizing.
Ntxiv nrog rau kev ua granules rau kev txhaj tshuaj molding,chopped carbon fiber ntaumuaj lwm yam kev siv, xws li ua los ntawm carbon fiber lev, los yog ua los ntawm carbon fiber ntawv. Qhov yuav tsum tau ntev ntawm chopped carbon fiber yuav ntev tshaj qhov ntev ntawm tws fiber ntau rau granules.
Tsis tas li ntawd, nyob rau hauv tas li ntawd mus rau haphazardly tws carbon fibers, kuj muaj bundled tws carbon fibers. Qhov luv-cut fiber no yog nyob rau hauv luv luv txiav ua ntej cov pa roj carbon fiber cab rau ib tug tej yam predetermined hom, ces txiav tawm ntawm lub luv-cut fiber muaj cov yam ntxwv ntawm ib lub nras, uas muaj tus nqi ntawm resin yuav ntau npaum li cas tshaj lwm yam luv luv fiber.