Ua ntej, qhov ntev ntawm iav fiber ntau hauv cov qauv txhuam
Qhov ntev ntawm iav fiber hauv daim duab matrix yog luv dhau los ua ib tug neeg muab phom thiab tsis ua si kom muaj lub luag haujlwm zoo (xws li ib ton ntawm CaCO3 rau ob peb txhiab caug, qhov zoo li qub, koj tuag thaum kawg); ntev ntev, txawm hais tias qhov tshwm sim zoo li Qhov tseem ceeb, tab sis muaj feem xyuam rau lub iav fiber dispersion hauv daim duab matrix, molding txoj kev kawm thiab cov khoom ua tau zoo.
Yog li, nws feem ntau yog xam tias qhov zoo tagnrho ntev ntawm lub iav fiber hauv lub thermoplastic ntoo yuav tsum yog 5 zaug nws qhov tseem ceeb ntev. Qhov tseem ceeb ntev yog qhov tsawg kawg nkaus uas tsim nyog rau lub iav fiber nyob rau hauv ib txoj kab uas siv fiber ntau-reinforced thermoplastic kom mus txog qhov kev txhawj xeeb nqi ntawm qhov uas nws lov. Nyob rau hauv layman lub ntsiab lus, koj mus rau ib lub khw mus yuav ris. Qhov ntev ntawm koj lub ris tsis zoo rau koj cov qij taws, tab sis nws yog ob peb centimeters ntev dua. Nws yog lub tswv yim los tiv thaiv kom tsis txhob poob los ntawm kev ua ib qho kev ua lag luam dhau ib hmo. Raws li cov lus hais tias, "npaj tsis tsawg."
Vim nyob hauv iav fiber reinforced plastics, qhov ntev ntawm iav fiber ntau tsuas xa cov kev nyuab siab thaum nws nce mus txog qee qhov ntev, thiab nws plays lub luag hauj lwm hauv reinforcing cov khoom, txwv tsis pub nws yog high-grade CaCO3. Txawm li cas los xij, nws tsis zoo ib yam li kev ntaus yeeb ceem tshiab, "ib ntu ntev thiab ib nti muaj zog," tab sis nws muaj qhov siab ntev. Tsis tas li ntawd, txawm tias qhov kev pom zoo pom zoo tshaj plaws, nws tsis tuaj yeem 100% lav tias qhov ntev ntawm cov iav fiber hauv qhov khoom yog qhov txiaj ntsig, vim tias cov khoom siv thiab kev lag luam muaj kev cuam tshuam rau lub sijhawm kawg ntawm cov iav fiber, nws zoo li, koj tus Trousers muaj shrunk. Yog li, tom ntej no Xiaobian yuav qhia rau koj txog kev yuav ua li cas kom ntev ntev ntawm iav fiber ntau hauv cov khoom siv thiab txheej txheem.
Qhov ob, yam uas cuam tshuam rau qhov ntev ntawm iav fiber ntau hauv yas
1, khoom siv
(1) Ntsia Txuas Ntsia thiab Cov Peeb Tsom Ntsuas Kev ua tiav cov qauv ntawm kev tsim twin-thawv configuration thiab fwj configuration rau kev npaj ntawm cov iav fiber ntau yog: 1 kom tsis txhob degradation ntawm matrix reini thiab kom sib npaug iav fiber hauv matrix re; 2 Xyuas kom tseeb tias txhua cov fiber ntau tau ntim los ntawm polymer yaj; 3 txiav cov fiber ntau mus rau qhov ntev kom pom tseeb tias qhov sib tov yog maximally reinforced; 4 volatiles los ntawm extrusion txheej txheem tau muab ntxuav.
(1) Cov kev sib tsoo cov nplaum ntxiv ntxiv ntawm iav fiber ntau: Qhov muab khib nyiab ntxiv los ntawm iav fiber yuav tsum tau txais ib cov hlau lead loj, yog li ntawd cov polymer nyob hauv lub voj voog kom khiav tawm qhov chaw txaus kom haum rau cov iav fiber. Tsis tas li ntawd, kom tsis txhob muaj qhov nkag mus rau hauv lub plhaub taum los ntawm lub polymer, lub iav fiber ntau yog nkag nrog lub xov thawj, thiab lub khob ntev iav yuav nkag tau nrog tsawg kawg yog ib khub ntawm kneading disc qauv.
(2) Txiav thiab Dispersing ntawm Cov Khib Fibers: 1 Cov cuab yeej iav hauv qab ntawm cov iav fais fab hauv cov iav yuav tsum yog qhov hloov thiab homogenization ntawm iav fiber ntau ntev. Ntev iav fiber ntau yog headless. Tom qab ntxiv cov ntsia hlau, nws yuav tsum tau txiav mus rau hauv ib tug ntev ntev thiab tov zoo nrog qhuav. Cov nplaum yuav tsum yog cov khoom sib xyaws sib faib, los yog cov pob nyom nyias nyias thiab toothed mixed original. 2 Luv luv fiberglass, tsuas yog vam khom lub pob zeb tawg kom ntub thiab nti tawm cov fiber ntau, yog li cov lus sib xyaw ua ke muaj peev xwm ua los ntawm ib qho tawg paj ntawm cov pob txha los yog ib rab phom los yog ib daim iav ntawm cov xov hlau. 3 Lub siab viscosity polymer los yog cov ntsiab lus iav siab (> 40%) muaj kev sib txeeb sib txeeb tshaj qhov uas tsis tshua muaj viscosity polymer los yog cov iav fiber ntau qhov ntsia hlau los xyuas kom meej tias cov iav fiber tsis lov tshaj.
(2) Qhov chaw ntawm qhov cua ntawm sab qaum vim tias ib co iav fibers yog pretreated, piv txwv li, cov iav fibers nyob rau hauv cov iav ntev fiber yog kho nrog ib tug paraffin emulsifier, thiab cov fibers uas tsis yog-twist kho nrog lub fortifier. Thaum muaj kub, tom qab khob fiber ntau yog tov rau hauv yaj, cov pob txha thiab cov txhim khu muaj zog nyob rau hauv cov iav fiber ua ib qho kev tiv thaiv plaub hau thaum lub sij hawm extrusion txheej txheem, thiab cov pa roj carbon monoxide yuav tsum tau muab tso tseg. Qhov seem sab nrauv yuav tsum tau nyob hauv qab ntawm cov iav fiber ntau hauv. Nyob rau ntawm qhov chaw nres tsheb sab qaum ntawm qhov chaw nres tsheb, yuav tsum muab ntsia hlau ntsia kom tiv thaiv tau cov khoom tawm los ntawm lub tshuab nqus tsev, xws li rov qab xov los yog rov qab kneading block.
(3) Tshooj kawg ntawm txoj hlua (Homogenization thiab kev tsim kom tiav) Yuav kom pelletize qhov sib xyaw sib xyaw ua tuag, cov hlau lead me me yuav tsum raug siv los thauj cov kab xev rau hauv cov kev taw qhia rau pem hauv ntej los tsim kom muaj qhov kev nyuaj siab. Nruab nrab ntawm qhov chaw nres nkoj thiab qhov kawg ntawm lub hau ntswj, cov phom toothed yog qee zaum kom homogenize lub fibers kom paub meej txawm tias faib rau ntawm iav.
2, txheej txheem ntawm txoj haujlwm
(1) Ntxiv ntawm iav fiber Ntev iav fiber ntau thiab luv iav fiber ntau ntxiv rau ntau txoj kev. 1 Luv luv fiberglass feem ntau ntxiv los ntawm ib qho khoom ntsuas, tab sis thaum qhov ntev ntawm cov iav fiber ntau dua 6 hli, ib lub tshuab ntsuas vibrating yuav siv tau los ntxiv cov polymer thiab iav fiber ntau ua ke, txwv tsis pub cov fiber ntau thiab cov tawv nqaij yuav sib cais. . Yuav kom nce lub qhov tso zis, sab pub mis ntxiv tau los ntawm cov chaw pub mis sab sab. 2 ntev iav fiber ntau kuj yoojyim ntxiv, tsis muaj qhov tshwj xeeb pub khoom noj khoom haus yog qhov yuav tsum tau, tsuav yog ntev lub iav fiber ntxiv rau qhov chaw nres nkoj pub zaum ob sab pub nkag. (2) Qhov iav fib ntxiv nyob rau qhov twg Feem ntau, cov polymer ntxiv rau ntawm qhov chaw nres tsheb thawj zaug (lub ntsiab). Tom qab nws yog melted, lub iav fiber ntxiv ntxiv ntawm qhov chaw nqes pub nqes mus nqes, piv txwv li, cov khoom noj ntxiv tom qab yog saws. Vim hais tias ntawm kev pub mis tom qab, cov iav fiber ntxiv ntxiv rau melted polymer. Tom qab cov kua yaj yog tov nrog fiber ntau, cov roj yog qhwv los muab lub cev thiab tiv thaiv cov nyhuv, thiab qhov kev rhuav tshem ntau zaus thaum lub sijhawm nws cov qoob loo thiab cov pob zeb yuav raug txo, uas yog siv cov iav fiber ntau. Dispersion thiab faib nyob rau hauv yaj.
