LGF Sib piv nrog SGF Composite
Hauv kev hloov kho ntawm siab -kev ua tau zoo engineering plastics, iav fiber reinforcement yog undoubtedly qhov kev paub tab thiab siv dav siv ntau yam. Txawm li cas los xij, rau ntau tus engineers thiab cov neeg yuav khoom, qhov zoo li qhov yooj yim parameter - fiber ntau ntev - feem ntau underestimated.
Thaum peb tham txog iav fiber reinforced thermoplastics, luv iav fibers (SGF) thiab iav fibers ntev (LGF), txawm tias muaj cov khoom sib xws, nthuav tawm cov yam ntxwv sib txawv ntawm microstructure mus rau macroscopic kev ua tau zoo. Kab lus no yuav coj koj mus tob rau hauv cov khoom siv sab hauv los sib piv cov laj thawj hauv qab thiab daim ntawv thov ciam teb ntawm ob cov ntaub ntawv no.
Keeb kwm: Genetic Differences
Qhov sib txawv ntawm ob qho tib si tau txiav txim siab ua ntej ntawm cov kab ntau lawm.
Luv iav fiber ntau (SGF) yog "ib txwm qauv" hauv kev lag luam. Nws ntau lawm feem ntau yog ua nyob rau hauv ib tug ntxaib - ntsia hlau extruder, qhov twg luv - txiav fibers yog tov nrog cov resin thiab melted. Thaum lub sijhawm ua haujlwm no, kev siv tshuab hnyav hnyav ua rau cov iav fibers tawg, uas ua rau cov fibers hauv cov khoom kawg yog feem ntau luv luv (li 0.2 hli - 0.4 hli). Cov txheej txheem no muaj txiaj ntsig zoo thiab tus nqi- siv tau, yog li SGF tau dhau los ua qhov kev xaiv zoo tshaj plaws rau feem ntau ntawm cov yas hloov kho.
Nyob rau hauv sib piv, ntev iav fiber ntau (LGF) muaj ib tug ntau "exalted" keeb kwm. Nws yog tsim los ntawm kev siv cable-coated pultrusion txheej txheem. Cov iav fiber ntau ntim tau ntim rau hauv cov molten resin hauv ib qho pwm tshwj xeeb thiab tom qab ntawd rub tawm zoo li lub cable, tom qab ntawd txias thiab granulation. Nyob rau hauv cov txheej txheem no, qhov ntev particle yog tib yam li qhov ntev fiber ntau (feem ntau yog 10 hli - 12 hli lossis ntev dua). Cov txheej txheem tshwj xeeb no yog tsim los ua kom muaj kev ncaj ncees ntawm cov fibers, tso lub hauv paus rau kev ua haujlwm tom ntej leaps.
GF Khoom: Sab hauv
Yog hais tias peb zoom nyob rau hauv ib lub microscope, peb yuav pom ob lub scenes sib txawv kiag li, uas yog lub hauv paus ntsiab lus ntawm kev ua tau zoo sib txawv ntawm ob.
Nyob rau hauv luv luv iav fiber ntau, cov fibers zoo yog dispersed zoo li toothpicks nyob rau hauv lub resin matrix. Txawm hais tias lawv tuaj yeem txhim kho qhov nruj ntawm cov khoom, cov fibers ua haujlwm ntawm ib leeg thiab tsis muaj kev sib txuas. Hauv kev ntxhov siab, lawv tsuas yog ua lub luag haujlwm ntawm "sau thiab txhawb nqa".
Txawm li cas los xij, hauv cov iav fiber ntau ntev, qhov xwm txheej txawv kiag li. Tom qab txhaj tshuaj molding, txawm hais tias qhov ntev fiber ntau yuav raug txo me ntsis, qhov ntev uas tseem tuaj yeem ncav cuag ntau tshaj 1 hli - 3 hli (ntau tshaj 10 npaug ntawm cov iav fibers luv). Dab tsi yog qhov tseem ceeb tshaj yog tias cov fibers ntev no khoov thiab cuam tshuam rau hauv cov khoom, tsim ib qho peb -dimensional "skeletal network". Cov qauv network no zoo li cov hlau tuav hauv pob zeb, nruj nreem kaw tag nrho cov khoom ua ke.
Kev ua si ua si
Nws yog qhov tseeb vim hais tias ntawm no "lub hauv paus network" uas cov iav fibers ntev tau siv zog yuav luag txhua yam - puag ncig ntawm cov iav fibers luv luv ntawm cov khoom siv kho tshuab, tshwj xeeb tshaj yog thaum cuam tshuam nrog huab cua:
1. Qhov kev hloov pauv zoo hauv kev cuam tshuam.Qhov no yog qhov tseem ceeb tshaj plaws ntawm cov khoom siv LGF. Thaum cov khoom siv iav fiber ntau raug cuam tshuam rau sab nraud quab yuam, cov kab nrib pleb tuaj yeem yooj yim bypass lub luv fibers thiab nthuav dav sai, thiab cov fibers nquag raug rub tawm, ua rau cov khoom siv nkig. Txawm li cas los xij, lub winding network hauv cov iav ntev fibers tuaj yeem nqus tau zoo thiab cuam tshuam lub zog cuam tshuam. Txhawm rau txhawm rau nthuav dav, nws yuav tsum kov yeej qhov cuam tshuam ntawm cov fibers ntev, thiab tseem yuav tsum tau tawg cov fibers. Yog li ntawd, qhov kev cuam tshuam lub zog ntawm LGF cov khoom feem ntau yog 2-3 npaug ntawm SGF, thiab nws tseem tawv txawm tias nyob rau hauv qis - qhov kub thiab txias.
2. Hauv kev sib ntaus sib tuativ thaiv Kub Kub thiab DurabilityNyob rau hauv lub sijhawm ntev - lub sijhawm thauj khoom, cov yas tuaj yeem ua rau "ceep" (piv txwv li, deformation mus tas li tshwm sim dhau sijhawm). Cov fibers luv luv luv dhau los tiv thaiv kev zawv zawg ntawm polymer chains. Txawm li cas los xij, lub network qauv ntawm cov iav ntev ntev tuaj yeem khov kho "tuav" cov khoom siv matrix, ua rau muaj kev cuam tshuam loj heev. Ntxiv mus, nyob rau hauv siab - qhov kub thiab txias ib puag ncig, qhov siab - qhov kub thiab txias zog ntawm LGF cov ntaub ntawv deb tshaj li ntawm SGF. Qhov no ua rau LGF qhov kev xaiv zoo tshaj plaws rau cov khoom siv hauv tsheb, cov khoom siv hauv tsev, thiab lwm yam, uas yuav tsum tau tiv thaiv kev ntxhov siab ib puag ncig.
3. Kev sib tw ntawm qhov seem stabilityTxhaj molded qhov chaw feem ntau ntsib teeb meem ntawm warping deformation, uas yog feem ntau tshwm sim los ntawm anisotropy uas tshwm sim los ntawm kev sib haum xeeb (kev taw qhia) ntawm fibers raws cov kev taw qhia ntws. Kev taw qhia ntawm luv iav fibers yog qhov muaj zog heev, ua rau cov khoom molded nws yooj yim rau khoov. Txawm li cas los xij, ntev iav fibers, txawm hais tias kuj taw qhia vim lawv inter winding, muab kev txwv quab yuam nyob rau hauv txoj kab ntsug thiab. Qhov no ua rau muaj qhov sib txawv ntawm qhov sib txawv thiab me me warping rau LGF molded qhov chaw, ua rau lawv tsim nyog rau kev tsim cov khoom loj nrog cov kev cai nruj rau qhov raug.
Vim li cas LGF thiab SGF sib koom ua ke?
Txij li thaum qhov kev ua tau zoo ntawm cov iav fibers ntev yog qhov zoo dua, vim li cas lawv tsis tau hloov cov iav luv luv? Yog vim li cas yog tias nyob rau hauv cov khoom siv, tsis muaj cov khoom zoo meej; tsuas muaj cov ntaub ntawv tsim nyog tshaj plaws. Cov iav luv luv tseem muaj qhov zoo ntawm cov hauv qab no:
Ua ntej, muaj qhov zoo ntawm kev ua kom yooj yim thiab zoo li. Kev ua cov iav fiber ntau ntev yuav tsum tau ua tib zoo saib xyuas cov txheej txheem los tiv thaiv fiber ntau tawg, thiab nws yog qhov ua rau "floating fibers", uas ua rau lub ntsej muag ntxhib. Ntawm qhov tod tes, luv iav fibers muaj fluidity zoo thiab lawv qhov chaw tuaj yeem ua tau yooj yim du thiab ci. Rau cov khoom uas muaj qhov xav tau zoo, cov qauv tsim, thiab kev xav tau ntawm lub zog nruab nrab, xws li cov neeg siv khoom siv hluav taws xob, SGF tseem yog tus thawj coj.
Cov nam tom ntej yog tus nqi -effectiveness. Cov nqi ntawm cov khoom siv raw thiab cov nqi ua haujlwm ntawm LGF feem ntau siab dua li ntawm SGF. Hauv cov teb dav dav uas tsis tas yuav muaj kev cuam tshuam loj heev los yog tsis muaj zog, kev siv LGF yog qhov tsis muaj qhov tsis ntseeg tias muaj ntau dua - kev ua tau zoo thiab cov nqi pov tseg.
Yog li ntawd, kev sib tw ntawm cov iav fibers ntev thiab luv iav fibers tsis yog ib qho yooj yim teeb meem ntawm superiority los yog inferiority; es, nws nyob rau hauv kev faib ntawm daim ntawv thov scenarios. Yog tias koj lub hom phiaj yog "hloov cov hlau nrog cov yas", thiab koj xav tau cov khoom siv los tiv thaiv qhov cuam tshuam loj, ua siab ntev ntev - lub sijhawm hnyav, lossis hloov aluminium alloy tuag- nrum qhov chaw kom ua tiav lub teeb yuag, ces cov iav fiber ntau ntev (LGF) yog qhov tseem ceeb tshaj plaws -kev ua tau zoo.
Yog tias koj cov khoom tsom mus rau qhov zoo nkauj zoo nkauj, cov qauv sib txawv, thiab feem ntau yog lub hom phiaj rau kev txhawb nqa yooj yim, nrog rau qhov yuav tsum tau qis rau qhov hnyav, ces cov iav luv luv (SGF) yog qhov kev xaiv zoo tshaj plaws uas sib npaug kev ua haujlwm thiab tus nqi.
