Thermoplastic carbon fiber composite cov ntaub ntawv xa mus rau cov khoom tsim los ntawm fusion ntawm carbon fibers thiab thermoplastic resins. Muaj qhov sib txawv loj hauv qhov nyuaj ntawm fusion ntawm ntau hom carbon fibers thiab ntau hom thermoplastic resins, thiab kuj tseem muaj qhov sib txawv loj ntawm qhov sib txawv ntawm kev ua haujlwm tom qab fusion. Tam sim no, kev ua tau zoo ntawm cov ntaub ntawv sib xyaw tsim los ntawm cov roj carbon fiber ntau thiab cov thermoplastic polyetheretherketone resin yog qhov zoo heev, thiab kev npaj ntawm cov khoom sib xyaw no muaj peev xwm ua tau ntau lawm.
Nyob rau hauv cov txheej txheem ntawm thermoplastic carbon fiber composite cov ntaub ntawv los ntawm txoj kev xav mus rau kev xyaum, kev npaj ntawm cov ntaub ntawv sib xyaw yog ib qho yooj yim txuas, thiab lwm yam txuas yog yuav ua li cas yooj yim ua cov ntaub ntawv sib xyaw rau hauv ib feem ntawm ntau yam duab thaum tswj tib lub cev qauv. Kev ncaj ncees thiab mechanical kev ua tau zoo zoo. Txhawm rau daws cov teeb meem hauv ob qhov txuas saum toj no, tsis yog tsuas yog xav tau kev tshawb fawb theoretical xwb, tab sis kuj tseem muaj kev sim ua tau zoo yog qhov tseem ceeb. Dab tsi ua thiab molding cov kev daws teeb meem tam sim no muaj pov thawj tias ua tau? Zhishang Cov Khoom Tshiab yuav coj koj hla nws.
Tsib thermoplastic carbon fiber ntau cov txheej txheem molding uas tam sim no siv tau
1. Melt dipping molding
Melt impregnation yog qhov kev xaiv zoo tshaj plaws rau kev npaj crystalline polymer impregnated tapes. Unidirectional, thaum uas tig mus, ruaj-nruj fiber ntau pob yog kos los ntawm cov xaim pub thav duab ntawm lub yaj impregnation ntaus ntawv, thiab xa mus rau lub melt impregnation tank yuav impregnated nrog thermoplastic resin. Tom qab dhau los ntawm qhov kub-kub rauv thiab Tom qab raug nias rau hauv daim kab xev prepreg los ntawm cov xovxwm kub, nws raug mob rau hauv yob los ntawm lub tshuab winding. Lub hauv paus tseem ceeb ntawm cov txheej txheem yaj impregnation yog kom ua kom qhov tawg ntawm cov fiber ntau thiab kom nkag mus rau sab hauv ntawm cov fiber ntau.
Nyob rau hauv txoj kev no, cov resin nyob rau hauv ib lub xeev molten impregnates lub dispersed fiber bundles nyob rau hauv ib tug tej yam lub siab. Qhov zoo tshaj plaws, sab hauv ntawm cov khoom siv fiber ntau yuav nkag siab tag nrho, thiab thaum kawg txias kom tau txais prepreg lossis prepreg fiber ntau strip. Cov txheej txheem yaj impregnation yog yooj yim, generates yeej tsis volatile gases thaum lub sij hawm tus txheej txheem, thiab muaj peev xwm tswj tau cov ntsiab lus fiber ntau ntawm prepreg; Txawm li cas los xij, cov nyhuv impregnation tsis zoo nyob rau hauv high-viscosity resin systems, thiab nws yog ib qho nyuaj rau cov fibers kis thiab disperse.
Qhov kev sim pom tias tom qab dhau cov pa roj carbon fiber ntau los ntawm tus kheej-tsim impregnation lub taub hau ntsia rau ntawm ib leeg-ntsia hlau extruder, PA66 resin tov nrog antioxidants tau ntxiv rau cov khoom noj hopper kom yaj thiab plasticize, yog li txheej cov roj carbon fiber ntau txuas ntxiv. , impregnation los tsim CF / PA66 prepreg unidirectional tapes nrog cov ntsiab lus carbon fiber ntau.
2. Extrusion-txhaj tshuaj molding
Tam sim no, cov txheej txheem molding ntawm chopped carbon fiber (SCF) cov ntaub ntawv sib xyaw yog tsuas yog extrusion-txhaj tshuaj molding. Thaum lub sij hawm molding txheej txheem, cov khoom rheological ntawm tws carbon fiber ntau yaj yog feem ntau cuam tshuam los ntawm kev kub thiab shear stress. Thaum cov txheej txheem kub qis dua qhov tseem ceeb, qhov pom tseeb viscosity ntawm cov yaj yuav txo qis thaum ua haujlwm kub nce; Thaum nws tshaj tus nqi tseem ceeb, qhov pom tseeb viscosity tsis hloov pauv nrog qhov ua haujlwm kub, uas qhia cov yam ntxwv ntawm cov kua Newtonian, thiab nws tsim nyog rau kev sib xyaw ua ke rau lub sijhawm no. Kev tsim thiab ua cov khoom siv. Shear feem ntau cuam tshuam rau viscous flow activation zog ntawm yaj. Qhov me me ntawm qhov kev nyuab siab shear, qhov ntau dua qhov viscous flow activation zog.
Ntxiv PA66, clustered tws carbon fiber, compatibilizer, hnav-tiv taus additives, antioxidants, thiab lwm yam. rau hauv lub high-speed tov khoom thiab sib tov ntawm chav tsev kub; Tom qab ntawd yaj thiab muab cov khoom sib xyaw ua ke los ntawm ib qho ntxaib-ntsia hlau extruder. Extrusion, dej txias, ziab thiab ces pelletizing; Tom qab ziab cov pellets npaj, ib pawg SCF txhawb nqa PA66 cov khoom sib xyaw tau los ntawm kev txhaj tshuaj molding.
3. Moulding
Moulding yog muab cov ntawv txiav thermoplastic carbon fiber composite prepreg ntawv los yog sib xyaw dawb paug uas muaj cov pa roj carbon fiber ntau rau hauv pwm, thiab tom qab ntawd ua kom sov cov thermoplastic resin rau saum lub melting point los yog viscous flow kub kom yaj, ntws, impregnate thiab qhwv cov resin rau reinforcement. fibers yog nruj nreem khi ua ke los ntawm lub interface thiab thaum kawg txias kom zoo. Txoj kev no muaj qhov zoo ntawm kev ua haujlwm yooj yim, kev ua haujlwm siab ntau lawm, kev siv hluav taws xob tsawg thiab tus nqi qis.
Cov kev sim tau pom tias txuas ntxiv carbon fiber-reinforced thermoplastic composites tuaj yeem raug molded ncaj qha online. Cov yam ntxwv ntawm cov txheej txheem yog tias cov yaj tsuas yog rhuab ib zaug thaum lub sij hawm tag nrho cov txheej txheem, thiab cov duab ntawm lub nruam carbon fiber yog khaws cia rau ncaj qha molding. Qhov ntev ntawm cov pa roj carbon fiber ntau hauv cov khoom yog khaws cia rau qhov loj tshaj plaws, thiab nws muaj kev ua haujlwm siab, cov khoom lag luam yooj yim molding, thiab cov nqi qis. Nyob rau hauv lub neej yav tom ntej, nws muaj peev xwm tsim automotive engine valve npog, pedals, iav npog thiab lwm yam uas muaj nruj me me thiab kev ua tau zoo yuav tsum tau.
4. 3D luam ntawv molding
3D tshuab luam ntawv muaj qhov zoo ntawm kev ywj pheej ntawm kev tsim thiab kev muaj peev xwm ncaj qha thiab sai sai luam tawm cov khoom nyuaj uas nyuaj rau luam tawm siv cov txheej txheem ib txwm muaj. Fused Deposition Modeling (FDM) yog ib qho yooj yim 3D luam ntawv txheej txheem uas heats molten yas fibers nyob rau hauv lub taub hau extrusion thiab nteg cov yaj nyob rau hauv ib txheej ntawm ib lub platform, nrog rau txhua txheej interacting nrog rau yav dhau los. Bonding, thiab thaum kawg txias thiab hardening rau daim ntawv. Cov qauv luam tawm siv FDM yog qhov tseeb thiab cov txheej txheem txhim khu kev qha; Txawm li cas los xij, thaum luam ntawv cov qauv nrog cov duab convex, yuav tsum muaj kev txhawb nqa ntxiv, txwv tsis pub lawv yuav yooj yim tawg lossis tawg.
3D luam ntawv muaj kev siv ntau ntawm cov ntaub ntawv sib xyaw, tuaj yeem ua tiav siab precision thiab complexity, thiab tuaj yeem luam tawm cov khoom nyuaj uas nyuaj rau luam tawm nrog cov txheej txheem ib txwm muaj. Ntxiv mus, nws yuav siv sij hawm luv luv los ntawm cov qauv ntaub ntawv mus rau cov khoom molding, thiab yog tsim rau kev tsim thiab kev tsim cov khoom tshiab. Kev tsim cov khoom me me ntawm qhov chaw.
5. Tsis siv neeg tso thiab tsim
Tsis siv neeg daim kab xev nteg tshuab yog cov txheej txheem tsim khoom siv ntxiv uas siv cov khoom siv xaim lossis daim kab xev tso nrog cov khoom siv cua sov tshwj xeeb rau txoj hauj lwm, nteg thiab ua kom muaj zog hauv qhov chaw, nce txheej los ntawm txheej hauv cov thickness kev taw qhia ntawm cov khoom, thiab thaum kawg mus txog qhov tsim loj, Ua kom tiav kev tsim khoom ntawm qhov chaw. Cov thev naus laus zis no feem ntau yog siv rau hauv thaj chaw aerospace thiab tsim nyog rau kev tsim cov khoom sib xyaw ua ke hyperboloid. Cov txheej txheem molding no muaj qhov zoo ntawm kev ua haujlwm siab, qib siab ntawm automation, thiab kev tsim digital yooj yim.
Tsis siv neeg daim kab xev nteg tshuab feem ntau muaj xws li prepreg pub tais, tsis siv neeg daim kab xev nteg taub hau, tivthaiv pwm, CNC tshuab, computer-aided tsim (CAD) software, thiab lwm yam. Thaum lub kaw lus ua hauj lwm, cov ntaub ntawv prepreg muab tso rau hauv daim kab xev nteg taub hau. . Daim kab xev nteg txoj hauj lwm yog tswj los ntawm ib tug multi-axis neeg hlau caj npab. Ib txheej ntawm rollers coj cov kab xev prepreg tawm. Tom qab tau rhuab los ntawm cov txheej txheem, nws yog nteg on pwm nyob rau hauv qhov kev txiav txim ntawm lub siab roller. Los yog nyob rau yav dhau los txheej ntawm cov khoom nteg, thiab thaum kawg lub prepreg daim kab xev yog txiav tawm los ntawm ib tug txiav riam, yog li ua tiav ib daim kab xev nteg.
Piv nrog rau phau ntawv lay-up molding, tsis siv neeg nteg-up molding tau txhim kho kev ua tau zoo, tsawg pov tseg, siab dua qhov tseeb, thiab kev ntxhov siab sab hauv. Nws yog yav tom ntej txoj kev loj hlob kev taw qhia ntawm loj-scale Cheebtsam manufacturing.
Cov txheej txheem txhim kho ntawm carbon fiber ntau cov khoom siv molding txheej txheem khiav los ntawm kev txhim kho tag nrho cov kev lag luam carbon fiber. Txawm hais tias nws yog tam sim no lub ntsiab thermosetting carbon fiber los yog cov thermoplastic carbon fiber uas muaj peev xwm zoo nyob rau yav tom ntej, kev tsim muaj peev xwm thiab kev ua tau zoo yuav raug txhim kho vim yog kev txhim kho ntawm cov txheej txheem molding. Nrog rau kev sib sib zog nqus ntawm kev tshawb fawb ntawm cov ntaub ntawv carbon fiber ntau, cov txheej txheem molding ntse yuav tshwm sim, thiab kev loj hlob ntawm kev lag luam carbon fiber yuav nws thiaj li ua rau zoo dua tag kis. Zhishang Cov Khoom Tshiab ib txwm ntseeg ruaj khov rau qhov no.
