Yog vim li cas thiab cov nyhuv ntawm ntab fibers hauv txhaj tshuaj molding tsis xws luag
Txheeb Xyuas Qhov Ua Tau:
Qhov tshwm sim fiber ntau tshwm sim los ntawm kev nthuav tawm ntawm cov iav fiber. Cov iav dawb iav ntab rau saum cov yas yaj hauv cov txheej txheem pwm sau ntws, thiab tsim cov kab dawb hauv qab ntawm cov nplais yas tom qab hws. Thaum cov khoom yas yog xim dub, qhov sib txawv ntawm cov xim yuav pom tseeb dua vim qhov nce ntawm cov xim sib txawv.
Ua ntej tshaj plaws, nyob rau hauv cov txheej txheem yas yaj ntws, iav fiber thiab cob muaj qhov nyiam sib cais vim lawv cov dej sib txawv thiab qhov hnyav sib txawv. Cov iav fiber nrog qhov ntom ntom me me ntab mus rau saum npoo, thaum cov pob zeb uas muaj qhov ntom ntom ntog loj nkag mus rau sab hauv, yog li tsim qhov tshwm sim ntawm cov iav fiber ntau raug.
Qhov thib ob, cov yas yaj yuav raug rau lub taub hau ntsia hlau thaum lub sijhawm khiav thiab lub qhov rooj ntawm kev sib txhuam shear quab yuam, tuaj yeem ua rau qhov sib txawv ntawm qhov viscosity hauv ib cheeb tsam, yuav rhuav tshem txheej txheej ntawm cov iav fiber ntau dua tib lub sijhawm, qhov me dua qhov viscosity yaj, txheej txheej cuam tshuam raug puas tsuaj ntau dua, kev sib txuas ntawm cov iav fiber ntau thiab cov pob zeb yog qhov tsawg dua, thaum cov nyiaj me me rau qee yam, cov iav iav yuav ntab tawm ntawm tus quab ntawm cov tshuaj sib xyaw ua ke, mus rau qhov chaw nthuav tawm maj mam nce;
Ib qho ntxiv, thaum cov yas yaj tau txhaj rau hauv cov kab noj hniav pwm, cov dej ua kom zoo yuav tsim, uas yog, iav fiber yuav ntws los ntawm sab hauv mus rau sab nraud thiab tiv tauj nrog cov kab noj hniav pwm. Vim tias qhov kub tsis txias ntawm cov pwm nto, iav fiber ntau nrog lub cev hnyav thiab ua kom khov sai yuav khov tam sim. Yog tias nws tsis tuaj yeem nyob ib puag ncig los ntawm qhov tawg nyob rau lub sijhawm, nws yuav raug nthuav tawm thiab tsim cov fiber ntau.Qhov tsim cov ntab fiber tsis tsuas yog cuam tshuam nrog kev sib xyaw thiab cov yam ntxwv ntawm cov khoom yas, tab sis kuj rau txheej txheem tsim, uas muaj qhov nyuaj thiab tsis paub tseeb.
kev daws teeb meem:
A. Kev kho cov pwm pouring system.
Mould pouring system yog cuam tshuam nrog kev tsim cov dej ntws tshwm sim. Hauv qhov pom tsis zoo ntawm cov iav fiber ntau ntxiv cov yas thiab qhov tsis sib xws ntawm cov iav fiber ntau thiab cov khoom sib txuas, cov dej ntws yuav tsum tsis txhob ntev dhau, thiab cov yaj yuav tsum ua kom sai sai rau kab noj hniav kom ntseeg tau tias qhov sib xws ntawm cov iav fiber thiab tsim ntawm ntab fiber ntau yam tsis muaj kev tso tawm stratification.
Yog li ntawd, lub hauv paus ntsiab lus ntawm kev tsim rooj vag tsim yog tias ntu ntu ntws yuav tsum loj, ntws yuav tsum ncaj thiab luv, thiab ntxhib thiab luv lub ntsiab channel shunt channel thiab lub qhov rooj ntxhib yuav tsum tau txais. Lub rooj vag tuaj yeem yog ntu ntu ntxuam thiab lub nplhaib, lossis daim ntawv ntawm ntau lub rooj vag tuaj yeem siv tau, yog li txhawm rau ua kom cov khoom ntws tsis xwm yeem thiab txo qhov kev qhia ntawm iav fiber ntau nthuav tawm. Ntxiv mus, nws yuav tsum muaj lub tshuab ua haujlwm zoo, uas tuaj yeem tso tawm cov pa tsim los ntawm kev hloov pauv ntawm cov iav fiber ntau kho tus neeg sawv cev, yog li txhawm rau zam qhov tsis xws xws li kev sib txuas tsis zoo, tsis muaj cov khoom thiab hlawv.
Rau cov txheej txheem pov tseg ntawm txhais tes npog pwm, nws txoj kev ntws ntev ua rau ntab fiber Cov tshwm sim yog qhov tseem ceeb, tab sis qhov no xav tau ntawm cov qauv pwm, tsis tuaj yeem ua rau nws luv, yog li tsuas yog kho qhov loj ntawm ntu ntu thiab daim ntawv thiab qhov loj ntawm lub qhov rooj mus rau lub qhov rooj kiv cua, lub qhov rooj thiab cov neeg sib tw loj tau maj mam nce ntxiv hauv cov txheej txheem pwm kuaj lwm yam kom nco ntsoov yog tias, Cov ntab fiber ntau tau yooj yim los tshwm ntawm qhov chaw ntawm cov yas yas phab ntsa tuab loj dua, qhov no yog vim tias cov dej ntws ntws nrawm dua qhov loj dua, ntawm qhov nruab nrab nws cov dej ntws nrawm yog siab, thiab qis qis nyob ze ntawm kab noj hniav phab ntsa, ua los ntawm fiberglass fulu kev sib zog zuj zus, txheeb ze nrawm dua qeeb, tso tseg sib sau ua ke thiab tsim cov ntab fiber ntau Yog li, peb yuav tsum sim ua cov yas yas phab ntsa tuab tuab ib yam thoob plaws, thiab zam lub kaum ntse ntseNotch kom ntseeg tau tias cov dej ntws du.
B. Kub
Thawj yog qhov ntsuas kub vim tias cov ntsiab lus melting ntawm iav fiber reinforced yas yog 30% ~ 70% qis dua li cov yas uas tsis siv cov yas ntxiv, thiab cov kua dej tsis zoo, yog li lub thoob kub yuav tsum yog 10 ~ 30 siab dua qhov xwm txheej dav dav chim kub tuaj yeem txo qis viscosity, txhim kho cov kua dej, zam qhov tsis zoo thiab fusion, nce iav fiber ntau dispersion thiab txo kev taw qhia, thiab tau txais cov khoom qis dua qhov ntxhib.
Txawm li cas los xij, qhov siab dua qhov ntsuas kub tsis zoo dua, qhov kub siab dhau yuav ua rau kom muaj kev hloov pauv ntawm oxidation thiab kev puas tsuaj ntawm nylon polymer, hloov xim me ntsis, ua rau coking blackeningThaum teeb tsa qhov kub ntawm lub thoob, qhov kub ntawm ntu pub mis yuav tsum yog me ntsis siab dua qhov xav tau ib txwm muaj, qis me ntsis qis dua ntu ntu, thiaj li siv nws cov txiaj ntsig ua ntej cua sov, txo qhov cuam tshuam ntawm cov ntsia hlau ntawm iav fiber, txo qhov sib txawv hauv zos viscosity thiab puas tsuaj rau iav iav nto, xyuas kom meej tias sib zog ua kom muaj zog ntawm cov iav fiber ntau thiab cov yas PA66+33 % GF yaj kub ntawm 275 ~ 280, qhov kub siab tshaj yuav tsum tsis pub tshaj 300, lub thoob kub tuaj yeem xaiv tau hauv qhov no.
Qhov thib ob, qhov sib txawv ntawm qhov kub thiab txias ntawm cov pwm yuav tsum tsis txhob loj dhau los tiv thaiv cov iav fiber los ntawm silting rau saum npoo thiab tsim cov nplaim dej ntab thaum yaj tas. Yog li ntawd, xav tau cov pwm siab dua, uas yog txiaj ntsig los txhim kho qhov ua kom yaj tiav, nce lub zog ntawm cov fusion cov cim, txhim kho qhov ua tiav ntawm cov khoom, txo kev taw qhia thiab deformation. Txawm li cas los xij, qhov kub pwm siab dua yog, lub sijhawm txias txias ntev dua, lub sijhawm ua haujlwm pwm ntev dua, qhov tsim khoom raug txo qis, thiab qhov sib zog ntawm kev ua mould nce ntxiv, yog li nws tsis zoo dua qhov ntsuas kub pwm zoo dua , tab sis kuj xav txog cov iav fiber ntau cov ntsiab lus ntawm cov txheej txheem pwm, thiab lwm yam, thaum iav cov ntsiab lus fiber ntau nyob hauv cov kab noj hniav nyuaj ua kom nyuaj, pwm kub yuav tsum tsim nyog nce ntxiv Rau cov khoom ntawm PA66+33 % GF tsheb handleface npog, peb xaiv pwm kub ntawm 110.
C: Siab
Shrinkage tus nqi ntawm cov khoom, tab sis nws yuav nce shear kev nyuab siab thiab kev taw qhia, uas yog ib qho yooj yim ua rau warping deformation, demoulding nyuaj thiab txawm tias muaj teeb meem. Yog li ntawd, nws yog qhov tsim nyog txhawm rau txhim kho cov ntab fiber ntau ntawm lub hauv paus ntawm kev txhaj tshuaj siab dua me me ntawm cov yas tsis txhim kho, kev xaiv txhaj tshuaj siab yuav tsum tsim nyog nce raws li qhov xwm txheej tshwj xeeb.Ntxiv rau qhov tseem ceeb xws li qhov loj ntawm lub rooj vag puag ncig ntawm cov khoom, nws tseem cuam tshuam nrog cov iav fiber ntau cov ntsiab lus thiab cov duab. Feem ntau, ntau dua cov iav cov ntsiab lus fiber ntau, qhov ntev ntawm iav fiber ntau, qhov ntau dua qhov kev txhaj tshuaj.
Qhov loj ntawm cov ntsia hlau rov qab siab muaj qhov cuam tshuam tseem ceeb rau qhov ua tau zoo ntawm cov iav iav tsis sib xws hauv cov yaj, qhov kev cog lus me me ntawm cov yaj, qhov ua tau zoo thiab cov khoom siv thiab lub cev ntawm cov khoom. Feem ntau, me ntsis siab rov qab siab yog qhov zoo dua los txhim kho qhov tshwm sim ntab fiber ntau.Txawm li cas los xij, lub siab rov qab siab yuav ua rau muaj kev cuam tshuam loj dua ntawm cov fiber ntev, yog li cov yaj yaj tau yooj yim rau kev puas tsuaj vim qhov ua kom sov dhau, ua rau cov xim tsis zoo thiab cov khoom siv tsis zoo. Yog li ntawd, lub nraub qaum tuaj yeem teeb tsa me ntsis siab dua li cov yas uas tsis siv zog ntxiv.
E. Txhaj tshuaj nrawm
Nrog kev txhaj tshuaj nrawm dua, qhov tshwm sim fiber ntau tuaj yeem txhim kho, kev txhaj tshuaj nrawm tuaj yeem nce ntxiv, iav fiber ntau ntxiv yas tuaj yeem ua rau kab noj hniav sai, thiab iav fiber ntau txav raws txoj kev khiav nrawm, uas yog txiaj ntsig kom nce kev sib cais ntawm cov iav fiber thiab txo qhov kev taw qhia ntawm cov iav fiber txhim kho lub zog ntawm cov fusion cim thiab pom qhov ua tiav ntawm cov khoom, tab sis ua tib zoo saib xyuas kom tsis txhob txhaj tshuaj nrawm dua, hauv lub qhov ncauj qhov ncauj lossis rooj vag&"tsuag;" qhov tshwm sim, tsim ntawm serpentine tsis xws luag, cuam tshuam rau cov tsos ntawm cov yas.
F. Ntsia hlau ceev
Iav fiber ntau siv cov yas yas, cov ntsia hlau tig nrawm yog qhov tsis zoo thiab ua rau tsis zoo, zam kev sib txhuam shear quab yuam loj dhau thiab ua rau muaj kev puas tsuaj rau iav iav, iav fiber ntau sab hauv lub xeev cuam tshuam, txo qhov ua kom khov ntawm iav fiber ntau thiab cob, ua kom hnyav dua [GG ] quot; ntab fiber" qhov tshwm sim, tshwj xeeb tshaj yog thaum cov iav fiber ntau dua, yuav tshwm nrog ib feem ntawm cov iav fiber tawg ntev qhov tsis sib xws tshwm sim, tshwm sim los ntawm yas txhua qhov siv ntau yam, Cov khoom siv dag zog ntawm cov khoom tsis ruaj khov.
Los ntawm kev tshuaj xyuas saum toj no, nws tuaj yeem pom tias kev txhaj tshuaj nrog cov khoom kub, kub pwm siab, siab siab, kev kub ceev thiab cov ntsia hlau qis yog qhov zoo dua los txhim kho&"ntab fiber &"; tshwm sim.
XIAMEN LFT COMPOSITE PLASTIC CO., LTD yog tus kws tshaj lij kev lag luam hauv cov khoom siv hluav taws xob ntev thermoplastic hauv xiamen, Suav. Xiamen LFT lub tuam txhab tau muab cov khoom siv zoo tshaj plaws thiab kev daws teeb meem kom tau raws li koj qhov kev nug.
candyhu@lfrtplastic.com
