Yuav ua li cas los daws cov floating fiber nyob rau hauv cov txheej txheem txhaj tshuaj molding? (ib)

Floating Fiber yog dab tsi thiab yuav daws nws li cas (一)?

 

Floating fiber kuj hu ua exposed fiber. Nyob rau hauv zus tau tej cov raw cov ntaub ntawv nrog iav fiber yog feem ntau yuav tshwm sim yog lub nto zoo li phem, tsuas yog rau burnt, raug fiber ntau thiab cov ntaub ntawv paj.Thiab qhov no yog qhov tseem ceeb tshaj plaws, qhov nyuaj tshaj plaws los daws yog cov fiber ntau raug. Lub thiaj li hu ua exposed fiber ntau yog cov iav fiber ntau raug rau saum npoo ntawm cov khoom, kuj ntxhib, qhov tsos yog nyuaj rau txais. Dawb iav fiber ntau nyob rau hauv cov yas yaj pwm khiav txheej txheem raug rau sab nrauv, yuav tsum condensed tom qab molding nyob rau hauv cov yas nto los ua ib tug radial dawb kab, thaum cov yas qhov chaw rau cov dub yuav yog vim qhov nce ntawm cov xim sib txawv thiab ntau dua. pom tseeb.

 

1. Txhim kho qhov sib xws ntawm iav fiber ntau thiab nylon
Ntxiv compatibilizers, dispersants thiab lubricants thiab lwm yam additives rau cov molding khoom, xws li silane coupling tus neeg saib xyuas, txiv neej anhydride graft compatibilizer, fatty acid lubricants thiab ib co domestic los yog txawv teb chaws los tiv thaiv iav fiber ntau exposure agents. Los ntawm cov additives no los txhim kho kev sib raug zoo ntawm iav fiber ntau thiab cob, txhim kho lub uniformity ntawm dispersed theem, nce lub interfacial daim ntawv cog lus lub zog, txo qhov sib cais ntawm iav fiber ntau thiab cob, yog li txhim kho qhov tshwm sim ntawm iav fiber ntau raug. Piv txwv li, cov kev tshawb fawb pom tau hais tias los ntawm kev ntxiv compatibilizers rau lub matrix, lub compatibility ntawm iav fibers nyob rau hauv matrix ntawm cov ntaub ntawv hloov kho yog ho ntau dua li ntawm cov khoom uas tsis tau ntxiv.

2.Kev kho ntawm Txhaj pwm casting system

Cov pwm casting system yog ze ze rau qhov tsim ntawm "floating fiber" tshwm sim. Rau cov iav fiber reinforced yas txav yog tsis zoo, thiab cov iav fiber ntau thiab resin txav ntawm ob lub ntsiab lus ntawm cov yam ntxwv ntawm qhov tsis sib xws, qhov kev ncua deb tsis tuaj yeem ntev dhau, cov yaj yuav tsum tau ntim cov kab noj hniav kom paub meej tias cov iav fiber ntau. yog uniformly dispersed, tsis tshwm sim siltation thiab txheej thiab tsim ntawm "floating fiber".

Yog li ntawd, lub hauv paus ntsiab lus ntawm casting system tsim yog qhov cross-section ntawm tus khiav yuav tsum loj, thiab cov ntws yuav tsum ncaj thiab luv. Yuav tsum tau siv nyob rau hauv tuab thiab luv ntawm lub ntsiab ntws channel, manifolds thiab coarse rooj vag, lub rooj vag yuav ua tau daim ntawv hom, kiv cua thiab nplhaib, kuj yuav siv tau nyob rau hauv daim ntawv ntawm ntau lub rooj vag, thiaj li yuav ua rau cov khoom ntws chaotic, fiberglass diffusion, txo cov kev taw qhia ntawm kev sib deev. Tsis tas li ntawd, nws yuav tsum muaj cov pa ua haujlwm zoo, uas tuaj yeem tso cov pa tawm los ntawm volatilization ntawm iav fiber ntau qhov chaw kho mob hauv lub sijhawm, kom tsis txhob muaj qhov tsis zoo xws li kev sib xyaw tsis zoo, tsis muaj cov khoom siv thiab kub hnyiab.

Raws li rau lub pouring system ntawm tus kov npog pwm, nws ntev khiav khiav yog ib qho tseem ceeb ua rau qhov tshwm sim loj ntawm "floating fiber", tab sis qhov no yog qhov xav tau ntawm cov pwm qauv, uas tsis tuaj yeem luv luv, yog li tsuas yog tus ntoo khaub lig. -section loj ntawm tus khiav thiab daim ntawv thiab qhov loj ntawm lub rooj vag raug kho. Lub rooj vag tau hloov mus rau lub rooj vag zoo li tus kiv cua, thiab lub rooj vag thiab lub rooj sib tw khiav tau maj mam nce thaum lub sijhawm sim molding txheej txheem. Tsis tas li ntawd, nws yuav tsum tau muab sau tseg tias "floating fiber" yog ib qho yooj yim tshwm sim nyob rau hauv ib feem ntawm lub molded ib feem nrog loj phab ntsa thickness, vim hais tias lub melt flow velocity gradient yog loj nyob rau hauv qhov chaw no, qhov chaw ntawm lub melt flow yog siab, thiab qhov nrawm qis qis nyob ze ntawm phab ntsa kab noj hniav, uas ua rau lub ntsej muag ntawm cov iav fiber ntau nthuav dav, thiab qhov txheeb ze tshaj tawm qeeb dua, uas ua rau tsim cov "floating fiber" vim yog stagnation ntawm stagnation. "Floating fiber". Yog li ntawd, yuav tsum tau sim ua kom cov phab ntsa tuab ntawm molded qhov chaw nyob txhua qhov chaw, thiab tsis txhob ntse ces kaum, notches, los xyuas kom meej smooth ntws ntawm yaj.

Ntxiv nrog rau cov pwm, cov khoom zoo li nto txhob txwm ua los ntawm matte nto los yog etching nto, kom txo tau qhov pom ntawm cov iav fiber ntau raug.