FRP vs GRP
Nyob rau hauv niaj hnub engineering, cov ntaub ntawv ua lub luag haujlwm tseem ceeb hauv kev txhais cov qauv tsim, qauv, kev ua tau zoo, thiab kev ua haujlwm ntawm cov khoom. Qee zaum, cov khoom siv hluav taws xob uas tshwm sim tsis tuaj yeem ua kom tau raws li qhov tshwj xeeb ntawm cov khoom. Yog li, cov ntaub ntawv tshiab tau tsim los ua kom haum rau ntau yam kev xav tau ntawm engineering los ntawm kev sib txuas ob lossis ntau cov ntaub ntawv ua ke. Cov no yog hu ua cov khoom sib xyaw.
Qhob, plywood, Aerogel, thiab carbon fiber yog cov khoom siv ntxiv dag zog; txhua yam yog cov khoom sib xyaw. Kab lus no tsom mus rau ib chav kawm tshwj xeeb ntawm cov ntaub ntawv sib xyaw, uas yog hu ua fiber reinforced polymers. Cov ntaub ntawv no yog qhov hnyav, muaj zog, thiab muaj zog.
Dab tsi yog Fiber Reinforced Plastic / Polymer (FRP)?
Fiber reinforced polymers yog tsim los ntawm ob lub ntsiab lus tseem ceeb; fibers thiab polymer matrix. Nyob rau hauv FRP, cov fiber yog embedded nyob rau hauv ib tug polymer matrix. Cov qauv no muab cov khoom sib txawv ntawm cov tshuaj thiab lub cev sib txawv dua li cov khoom ntawm cov khoom siv. Qhov tseeb, cov ntaub ntawv no txaus siab rau engineering xav tau ntau dua li cov ntaub ntawv zoo tib yam. Vim li no, cov khoom sib xyaw tau siv rau hauv cov khoom siv tsis tshua zoo rau kev ua haujlwm zoo heev thiab xav tau kev tsim khoom. Mechanical, civil, biomedical, marine, thiab aerospace industries yog cov neeg siv khoom tseem ceeb ntawm cov khoom sib xyaw.
Lub luag haujlwm tseem ceeb ntawm fibers yog muab lub zog thiab nruj rau cov khoom. Tab sis lub fiber ib leeg yog nkig (piv txwv li: iav). Yog li ntawd, cov fibers yog encased nyob rau hauv ib txheej ntawm cov ntaub ntawv polymer. Polymer matrix tuav cov fibers hauv lawv txoj haujlwm thiab hloov cov loads ntawm fibers. Nws kuj tseem txhawb nqa lub zog ntawm inter-laminar shear zog.
Cov fibers siv hauv kev sib xyaw yog raws li hauv qab no; E-iav, S-iav, Quartz, Aramid (Kevlar 49), Spectra 1000, Carbon (AS4), Carbon (IM-7), Graphite (P-100), thiab Boron. Polyesters, Vinyl Esters, Epoxies, Bismaleimides, Polyimides, thiab Phenolics yog cov polymers siv. Txhua lub polymer muaj cov tshuaj lom neeg thiab lub cev sib txawv; yog li ntawd, pab sib txawv rau cov qauv sib xyaw. Yog li ntawd, cov khoom sib xyaw kuj sib txawv raws li cov polymer.
Polyester thiab vinyl yog cov khoom siv qis, yog li siv dav hauv kev lag luam. Epoxies yog siv rau kev ua haujlwm siab txuas ntxiv fiber ntau matrices. Nws kuj ua tau zoo dua li yas thiab polyester hauv qhov kub thiab txias. Bismaleimides thiab Polyimides yog cov kub kub resin matrices rau siv nyob rau hauv kub tseem ceeb engineering daim ntaub ntawv. Phenolics yog cov kub kub resin tshuab nrog cov pa luam yeeb zoo thiab hluav taws kub; yog li ntawd, siv nyob rau hauv aircraft interiors.
Dab tsi yog iav Reinforced Plastic (GRP) / iav Fiber Reinforced Plastic (GFRP)?
Glass Reinforced Plastic, feem ntau hu ua fiberglass, yog fiber ntau reinforced polymer nrog iav fibers hauv cov qauv sib xyaw. Cov polymer feem ntau yog epoxy, polyester, lossis yas. Cov ntaub ntawv fiberglass feem ntau yog siv rau hauv kev ua haujlwm siab ua haujlwm dav hlau thiab gliders, nkoj, tsheb, da dej, kub tub, tso tsheb hlau luam, cov khoom siv vov tsev, cov kav dej, cladding, cam khwb cia, Surfboards, thiab cov tawv nqaij sab nraud.
Qhov txawv ntawm FRP thiab GRP yog dab tsi?
• FRP yog cov khoom siv sib xyaw, qhov muaj zog fiber ntau suav nrog hauv polymer matrix. Lawv tau siv rau hauv ntau daim ntawv thov kev lag luam thiab engineering vim lawv lub zog siab thiab lub teeb yuag. FRP yog dav siv los hloov cov hlau thiab ntoo. Qhov piv txwv zoo tshaj plaws yog kev siv carbon fiber reinforced polymer (CFRP) es tsis yog txhuas thiab titanium lossis qib siab hlau hauv aircrafts.
• Fiberglass lossis GRP yog cov khoom sib xyaw ua los ntawm cov iav fibers thiab siv polyester, yas, lossis epoxy ua cov polymer. Nws yog siv los ua gliders, nkoj, thiab da dej. Fiberglass feem ntau yog siv rau kev lag luam. Fiber iav yog ib hom FRP.
