Taw qhia rau ntev fiber ntau reinforced composites

Ntev fiber ntau reinforced thermoplastic composite yog hais txog cov fiber ntau ntev dua 10 hli reinforced thermoplastic, fiber ntau ntxiv rau iav fiber, carbon fiber, thiab lwm yam fibers, feem ntau siv resin substrate yog PP (polypropylene), ua raws li PA (polyamide), lwm yam xws li raws li PPS (polyphenylene sulfide), TPU (polyurethane) thiab lwm yam resins, Raws li hom resin nrog kev kho fiber ntau zoo, tuaj yeem ua tiav cov txiaj ntsig zoo.

Ntxiv cov ntaub ntawv fiber ntau rau hauv cov resin tuaj yeem txhim kho cov khoom siv tag nrho. Cov ntaub ntawv fiber ntau nqus sab nraud hauv peb txoj kev: fiber ntau rub tawm, fiber ntau tawg, thiab resin tawg. Nrog rau qhov nce hauv fiber ntau ntev, fiber ntau rub tawm xav tau ntau lub zog, uas yog qhov tsim nyog rau kev txhim kho ntawm kev cuam tshuam lub zog. Nyob rau hauv cov ntaub ntawv sib xyaw, qhov kawg ntawm fiber ntau yog qhov pib taw tes ntawm kev loj hlob tawg, thiab tus naj npawb ntawm cov fiber ntau ntev yog me me, uas kuj txhim kho qhov cuam tshuam lub zog. Ntev fiber ntau sib xyaw ua ke, tig thiab khoov ib leeg thaum sau cov pwm, es tsis txhob nyob rau hauv txoj kab raws li cov kev taw qhia ntws zoo li luv fiber ntau sib xyaw. Yog li ntawd, piv nrog tib molding qhov chaw ntawm luv fiber mixes, ntev fiber ntau sib xyaw molded khoom muaj ntau dua isotropy, zoo flatness, thiab me warpage, yog li qhov loj yog ruaj khov. Lub thermal deformation kub ntawm ntev-fiber-reinforced thermoplastics kuj siab dua li ntawm luv-fiber-reinforced thermoplastics. Yog li ntawd, ntev-fiber composites muaj kev ua tau zoo dua li luv-fiber composites thiab tuaj yeem txhim kho rigidity, compressive zog, khoov lub zog, thiab creep kuj. Thermoplastic composites muab faib ua fiber ntau reinforced thiab luv-fiber reinforced.

Txoj kev yog txiav cov khoom prepreg tau los ntawm melting impregnation kom tau txais 6-10mm particles. Qhov ntev ntawm cov khoom yog raws li qhov ntev ntawm cov fiber ntau, thiab cov fiber ntau yog sib npaug ntawm cov khoom siv kom cov khoom muaj kev cuam tshuam rau lub zog thiab kev hloov pauv, kev ua tsov rog raug txo qis, tus nqi shrinkage yog txo, qhov seem stability yog nce. , thiab qaug zog tsis kam ntawm cov khoom yog txhim kho.

Cov khoom tuaj yeem ua kom sov los ntawm lub tshuab txhaj tshuaj molding thiab txhaj rau hauv pwm, thiab tom qab ntawd rhuab thiab pressurized hauv pwm. Raws li hom thermoplastic resin thiab cov khoom zoo ntawm cov khoom sib xyaw, qhov kub, siab, thiab lub sijhawm ntawm cov txheej txheem tsis raug kho. Txoj kev txhaj tshuaj molding tuaj yeem npaj cov khoom nrog cov duab nyuaj, uas nthuav dav heev ntawm daim ntawv thov.

Txoj kev molding yooj yim tshaj plaws yog coj cov txiaj ntsig fiber ntau ntxiv thermoplastic prepreg, multilayer superposition, superposition txoj kev yog ob txheej nyob ib sab 0/90 degree, thiab tom qab ntawd hauv lub phaj nias rau kub nias, kom tau daim ntawv los yog lwm cov duab yooj yim. . Txoj kev no yog txoj kev siv ntau tshaj plaws rau kev npaj cov ntawv thiab cov ntawv. Txhawm rau txhim kho kev ua haujlwm zoo, ob chav yob thiab peb yob calendering tuaj yeem siv rau molding.

Tsis tas li ntawd, daim ntawv prepreg raug txiav raws li qhov loj ntawm cov pwm thiab muab tso rau hauv lub qhov cub cua sov kom kub siab tshaj qhov melting ntawm cov resin. Tom qab ntawd nws raug xa mus rau hauv lub xovxwm tuag rau kev kub ceev ceev thiab txias kom tau txais cov khoom. Lub voj voog tsim ntawm txoj kev no yog luv. Nws yog tsim rau cov khoom uas loj thickness thiab ceev hloov, complex duab xws li convex, concave, los yog radian, thiab kuj rau cov khoom nrog embedded hlau qhov chaw. Txoj kev no muaj kev siv hluav taws xob tsawg thiab cov nqi tsim khoom, tab sis kev ua haujlwm siab ntau lawm.

Cov txheej txheem no yog cov txheej txheem tsim khoom uas tuaj yeem tsim cov khoom sib xyaw tsis tu ncua thiab kev lag luam. Pultrusion molding thev naus laus zis yog kev ua haujlwm tas mus li, tsis siv neeg ntau lawm rau cov ntsiab lus fiber ntau, kev ua haujlwm siab, thiab cov khoom siv tsis tshua muaj nqi. Nyob rau hauv txoj kev no, ntev fiber ntau yog impregnated nrog resin, ces dhau los ntawm kev tsim pwm nrog ib tug tej yam ntoo khaub lig-section duab, thiab ua rau nws solidified nyob rau hauv pwm, thiab ces cov khoom yog rub tawm ntawm lub molding txheej txheem. Cov txheej txheem extrusion molding muaj qhov zoo hauv qab no: xws li resin viscosity tuaj yeem hloov kho txhua lub sijhawm, cov ntsiab lus fiber ntau tuaj yeem ncav cuag 80 feem pua; Tsis siv neeg tswj cov txheej txheem ntau lawm, kev ua haujlwm siab ntau lawm; Lub longitudinal thiab transverse lub zog ntawm cov khoom tuaj yeem hloov kho arbitrarily kom tau raws li qhov yuav tsum tau ntawm cov khoom siv sib txawv ntawm cov khoom; Cov khoom zoo yog ruaj khov, repeatability yog qhov zoo, qhov ntev tuaj yeem txiav tawm arbitrarily; Tsis muaj lub kaum sab xis pov tseg hauv kev tsim khoom, thiab cov khoom tsis xav tau tom qab ua tiav, yog li nws txuag kev ua haujlwm, cov khoom siv thiab lub zog siv piv nrog lwm cov txheej txheem.

Ntev fiber ntau reinforced thermoplastic composites raws li cov khoom siv tau siv tau hauv kev lag luam, pej xeem, tub rog thiab lwm yam kev lag luam, tau siv dav hauv aerospace, tsheb, khoom siv hluav taws xob, kev sib txuas lus, khoom siv kis las, thiab lwm yam.

"Kev tiv thaiv ib puag ncig, kev txuag hluav taws xob, thiab tsheb sib tsoo" txhawb txoj kev loj hlob sai ntawm kev siv fiber ntau ntxiv cov thermoplastic composite npaj, tivthaiv tsim, thiab daim ntawv thov. Ntev iav fiber ntau-txhim kho cov thermoplastic composites raws li polypropylene (PP) tau siv dav hauv cov khoom siv hauv tsheb. Cov ntaub ntawv qhia tau hais tias 80 feem pua ​​​​ntawm qhov kev thov rau cov iav fiber ntau ntxiv cov thermoplastic composites los ntawm kev lag luam tsheb (cov khoom seem), uas tau siv dav hauv European hom tsheb. Cov kev cai tshwj xeeb ntawm kev ua tau zoo thiab kev sib txawv ntawm cov khoom siv hauv tsheb kuj ua rau cov khoom siv fiber ntau siv cov thermoplastic ntev muaj kev xaiv ntau dua rau fiber ntau thiab cov resin. Ntev fiber ntau siv cov thermoplastic composites yog siv nyob rau hauv cov nram qab no qhov chaw: pem hauv ntej kawg module, ntsuas vaj huam sib luag, qhov rooj module, lub cev, hauv qab phaj, thiab lwm yam complex shaped seem, nrog rau cov complex qhov chaw uas tau los ntawm cov txheej txheem txhaj tshuaj molding, qhov rooj thiab qhov rais, lub cev. hauv qab phaj, twj paj nruag thiab lwm yam, los yog raws li cov ntaub ntawv laminate xws li lub carriage guard phaj thiab qab nthab ntawm lub thawv tsheb. Thiab kev siv cov khoom siv sib xyaw carbon fiber ntau hauv cov tsheb siab lossis cov tsheb sib tw, thiab cov tsheb sib tw tseem nce ntxiv, thiab txawm tias qhov pom ntawm tag nrho cov tsheb sib xyaw carbon fiber ntau.

Txoj kev loj hlob ntawm high-ceev tsheb ciav hlau nyob rau hauv Tuam Tshoj muaj ntau xav tau rau ntev fiber reinforced thermoplastic composites, thiab cov kev ua tau zoo ntawm ntau qhov chaw yog txawv, uas kuj ua rau lub ntev fiber reinforced thermoplastic composites ntawm high-speed rail qhia nplua nuj thiab muaj yeeb yuj txoj kev loj hlob.

Kev ua haujlwm siab fibers xws li aramid, ultra-siab molecular hnyav, siab zog, thiab siab modulus polyethylene fiber thiab carbon fiber yog molded rau hauv cov khoom siv thermoplastic, uas tuaj yeem siv rau lub cev armor, shields, kaus mom hlau, thiab lwm yam. Kev ua haujlwm siab ntev fiber ntau thiab cov khoom siv hluav taws xob siv cov khoom siv thermoplastic kuj tuaj yeem siv rau hauv cov tso tsheb hlau luam, tsheb armored, thiab lwm yam cuab yeej.

Aviation muaj kev thov tshwj xeeb rau cov khoom siv qib siab thiab kev ua haujlwm siab, thiab cov khoom sib txawv hauv daim teb no muaj ntau yam kev xav tau rau cov khoom siv fiber ntau siv ntev ntev thermoplastic composites, cov carbon fiber ntau yog qhov tseem ceeb tshaj plaws. Fiber composites yog dav siv nyob rau hauv rockets, missiles, s thiab high-speed aircraft rau lawv cov cim thiab zoo heev lub cev thiab tshuaj. Piv txwv li, kev siv cov pa roj carbon fiber ntau thiab cov khoom siv yas sib xyaw ua rau hauv cov dav hlau, satellites, foob pob hluav taws, thiab lwm qhov chaw tsheb, tsis tsuas yog loj thrust, tsis tshua muaj suab nrov; Thiab vim lawv qhov hnyav, yog li siv zog tsawg, tuaj yeem txuag tau roj ntau.

Kev siv cov khoom siv ntev fiber ntau reinforced thermoplastic composite nyob rau hauv lub tshav pob ntawm high-grade cov ntaub ntawv yog feem ntau yog raws li ib tug phaj, feem ntau yog iav fiber reinforced PP, lub teeb yuag, muaj zog tshwj xeeb, tshwj xeeb modulus, corrosion kuj, dej tsis kam, yooj yim rau siv. siv, tsis tshua muaj nqi, tuaj yeem txiav raws li qhov xav tau, tuaj yeem ntsia tau nrog cov ntsia hlau, rivets, tuaj yeem ua kub yaj vuam thiab lwm yam zoo, Nws tuaj yeem siv ua phab ntsa board, phab ntsa hauv ob sab phlu, thiab lub tsev qauv. Nruam ntev fiber ntau-reinforced thermoplastic composites kuj tuaj yeem siv los ua cov kav dej yas zoo.