Ntev fiber ntau reinforced thermoplastics (LFRT) yog siv rau hauv kev txhaj tshuaj molding daim ntawv thov nrog cov khoom siv tshuab siab.Txawm hais tias LFRT thev naus laus zis tuaj yeem muab lub zog zoo, nruj thiab cuam tshuam cov khoom, cov txheej txheem ua haujlwm ntawm cov khoom siv no ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab qhov ua tau zoo ntawm qhov kawg tuaj yeem ua tiav.
Yuav kom ua tiav pwm LFRT, nws yog ib qho tsim nyog yuav tsum nkag siab qee yam ntawm lawv cov yam ntxwv tshwj xeeb.Kev nkag siab txog qhov sib txawv ntawm LFRT thiab cov pa hluav taws xob muaj zog thermoplastics tau txhawb kev txhim kho cov cuab yeej siv, tsim thiab ua cov cuab yeej siv los ua kom muaj txiaj ntsig thiab muaj peev xwm ntawm LFRT.
Qhov txawv ntawm LFRT thiab tsoos luv luv thiab luv iav fiber reinforced composites yog qhov ntev ntawm fiber ntau.Hauv LFRT, qhov ntev ntawm cov fiber ntau yog tib yam li qhov ntev ntawm cov pellets.Qhov no yog vim feem ntau LFRTs yog tsim los ntawm pultrusion es tsis yog shear compounding.
Hauv LFRT kev tsim khoom, qhov txuas txuas ntxiv ntawmiav fiberuntwisted roving yog thawj zaug kos rau hauv tuag rau txheej thiab impregnated nrog resin.Tom qab tawm ntawm qhov tuag, qhov txuas txuas ntxiv ntawm cov yas no yog txiav los yog pelletized, feem ntau Txiav rau qhov ntev ntawm 10 ~ 12mm.Nyob rau hauv sib piv, tsoos luv luv iav fiber ntau composites tsuas muaj tws fibers nrog ib tug ntev ntawm 3 mus rau 4 hli, thiab lawv ntev yuav raug txo kom tsawg tshaj li 2 hli nyob rau hauv lub shear extruder.
Qhov ntev fiber ntau hauv LFRT pellets pab txhim kho cov khoom siv ntawm LFRT-tshuaj tiv thaiv los yog toughness nce thaum tuav nruj.Raws li ntev raws li cov fibers tuav lawv ntev thaum lub sij hawm molding txheej txheem, lawv yuav tsim ib tug "sab hauv pob txha" uas muab ultra-high mechanical zog.Txawm li cas los xij, cov txheej txheem molding tsis zoo tuaj yeem hloov cov khoom siv fiber ntau mus rau hauv cov khoom siv fiber ntau luv.Yog tias qhov ntev ntawm cov fiber ntau raug cuam tshuam thaum lub sij hawm molding txheej txheem, nws yog tsis yooj yim sua kom ua tau raws li qhov yuav tsum tau ntawm kev ua tau zoo.
Yuav kom tswj tau qhov ntev ntawm fiber ntau thaum LFRT molding, peb qhov tseem ceeb yuav tsum tau xav txog: kev txhaj tshuaj molding tshuab, tivthaiv thiab pwm tsim, thiab kev ua haujlwm.
1. Cov khoom siv ceev faj
Ib lo lus nug uas feem ntau nug txog kev ua LFRT yog: Puas yog peb siv cov cuab yeej txhaj tshuaj molding uas twb muaj lawm los pwm cov ntaub ntawv no.Feem ntau, cov cuab yeej siv los tsim cov fiber ntau luv luv kuj tuaj yeem siv los ua LFRT.Txawm hais tias cov khoom siv luv luv fiber ntau molding yog qhov txaus siab rau feem ntau LFRT cov khoom thiab cov khoom, qee qhov kev hloov kho rau cov cuab yeej tuaj yeem pab tswj tau fiber ntau ntev.
Ib lub hom phiaj dav dav nrog ib qho "feed-compression-metering" seem yog qhov tsim nyog rau cov txheej txheem no, thiab kev puas tsuaj ntawm cov fiber ntau tuaj yeem raug txo los ntawm kev txo qhov compression piv ntawm cov metering seem.Qhov sib piv ntawm qhov ntsuas qhov ntsuas ntawm kwv yees li 2: 1 yog qhov zoo tshaj plaws rau LFRT cov khoom.Nws tsis yog qhov tsim nyog los siv cov hlau tshwj xeeb los ua cov ntsia hlau, cov thoob thiab lwm qhov chaw, vim tias qhov hnav ntawm LFRT tsis zoo li cov tsoos tsoos iav fiber reinforced thermoplastics.
Lwm yam khoom siv uas yuav tau txais txiaj ntsig los ntawm kev tshuaj xyuas kev tsim qauv yog lub taub hau nozzle.Qee cov ntaub ntawv thermoplastic tau yooj yim dua los ua cov txheej txheem rov qab tapered nozzle, uas tuaj yeem tsim cov qib siab ntawm shear thaum cov khoom raug txhaj rau hauv pwm kab noj hniav.Txawm li cas los xij, cov lus qhia nozzle tuaj yeem txo qhov ntev ntawm fiber ntau ntawm cov khoom siv fiber ntau ntev.Yog li, nws raug nquahu kom siv lub grooved nozzle taub hau / valve sib dhos nrog 100% "dawb txaus" tsim, uas ua rau nws yooj yim rau cov fibers ntev dhau los ntawm lub nozzle thiab mus rau hauv ib feem.
Tsis tas li ntawd, txoj kab uas hla ntawm lub nozzle thiab lub qhov rooj yuav tsum muaj qhov xoob ntawm 5.5m
m (0.250in) lossis ntau dua, thiab yuav tsum tsis muaj cov npoo ntse.Nws yog ib qho tseem ceeb kom nkag siab tias cov khoom ntws los ntawm cov khoom siv txhaj tshuaj molding li cas thiab txiav txim siab qhov twg cov shear yuav tawg cov fibers.
Hebei Yuniu Fiberglass Manufacturing Co., Ltdyogfiberglass khoom chaw tsim tshuaj paus nrog ntau tshaj 10-xyoo kev, 7-xyoo exporting kev.
Peb yog cov chaw tsim khoom ntawm fiberglass raw khoom, xws li fiberglass roving, fiberglass yarn, fiberglass tws strand lev, fiberglass tws strands, fiberglass dub lev, fiberglass woven roving, fiberglass ntaub, fiberglass ntaub..Thiab li ntawm.
Yog tias xav tau, thov hu rau peb dawb.
Peb yuav ua qhov zoo tshaj plaws los pab thiab txhawb koj.
Post lub sij hawm: Oct-09-2021