Dab tsi yog Fiber siv tam uas？

Lub npe xaj ntawm FRP yog fiber tam yas, feem ntau hu ua FRP (Fiber Reinforced Plastics), uas yog fiber ntau reinforced composite yas. Raws li cov khoom siv fiber ntau siv, nws tuaj yeem muab faib ua cov iav fiber ntau hauv cov yas (GFRP), carbon fiber reinforced puas yas (CFRP), boron fiber reinforced composite yas, etc. Nws yog cov khoom sib xyaw nrog iav fiber ntau thiab nws cov khoom lag luam ( iav daim ntaub, ntaub nplaum, hnov ​​zoo li, xov paj, thiab lwm yam) raws li cov khoom siv ntxiv cov khoom siv hluavtaws thiab cov tawv hluavtaws ua cov khoom siv matrix. Cov khoom siv fiber ntau hauv cov khoom tiv thaiv yog tsim los ntawm cov ntawv fiber ntau thiab qhov tseeb. Qhov lub cheeb ntawm lub fiber (los yog whisker) yog qhov tsawg heev, feem ntau tsawg dua 10μm, muaj qhov tsis sib xws thiab me dua, thiab cov leeg pob txha tawg tsis pub dhau 30/1000. Nws yog cov khoom tawg yooj yim uas yooj yim puas, tawg thiab corroded. Piv nrog rau cov fiber ntau, lub zog thiab qauv ntawm cov qauv hauv qab muaj tsawg dua, tab sis nws tuaj yeem tiv cov kab mob loj. Nws yog feem ntau viscoelastic thiab elastoplastic, thiab yog cov khoom siv tawv.

Lub tswv yim ntawm cov khoom siv sib xyaw ua ke yog cov khoom siv uas tsis tuaj yeem ua raws li cov kev xav tau ntawm kev siv, thiab xav tau kev sib koom ua ke ntawm ob lossis ntau cov ntaub ntawv sib xyaw ua ke los tsim lwm cov ntaub ntawv uas tuaj yeem ua raws li cov neeg' s txoj cai, uas yog cov khoom siv sib xyaw. Piv txwv li, txawm hais tias ib hom iav fiber ntau muaj lub zog loj, nws yog xoob ntawm cov ntoo thiab tuaj yeem tiv taus qhov nro, tsis yog khoov, txiab thiab nrawm qhov kev ntxhov siab, thiab nws tsis yooj yim rau kev tsim rau hauv cov duab ge ruaj khov. Nws yog qhov muag xoob. Yog tias lawv cov nplaum ua ke nrog cov khoom siv hluavtaws, lawv tuaj yeem ua rau ntau yam khoom siv tawv nrog cov qauv ruaj khov, uas tuaj yeem tiv taus qhov kev ntxhov siab zoo li khoov, compression thiab shear kev ntxhov siab. Qhov no tshwm sim tawm iav fiber ntau dua cov yas matrix ntau cov khoom siv. Vim tias nws lub zog yog sib npaug ntawm cov hlau, nws tseem muaj cov iav sib xyaw, thiab nws kuj muaj cov xim zoo ib yam, cov duab, tsis kam tiv thaiv, hluav taws xob rwb thaiv tsev, thiab rwb thaiv tsev kub khoom ntawm iav. Zoo li iav, qhov yooj yim to taub npe" FRP" tau tsim nyob hauv keeb kwm. Lo lus no tau qhia rau xyoo 1958 los ntawm Comrade Lai Jifa, tus qub thawj coj ntawm Ministry of Building Material Industry, thiab nthuav tawm los ntawm lub tsev cov ntaub ntawv tsim qauv mus rau tag nrho lub tebchaws. Lub ntsiab lus ntawm FRP hais txog cov yas txhawb nrog cov iav fiber ua cov khoom txhawb ntxiv thiab cov khoom hluavtaws ua cov ntawv ci. Nws yog hu ua iav fiber reinforced yas txawv teb chaws. Nrog txoj kev loj hlob ntawm kuv lub teb chaws' s FRP kev lag luam, ua cov khoom siv yas-khoom txhawb zog, nws tau nthuav dav los ntawm iav fiber ntau rau carbon fiber, boron fiber, aramid fiber, alumina fiber ntau thiab silicon carbide fiber. Tsis ntseeg, lub hnab yas siv zog ua los ntawm cov xov paj tshiab no, Puas yog qee cov khoom siv fiber ntau ua kom muaj zog, uas tsis tuaj yeem dav dav los ntawm hom FRP. Ua rau hauv keeb kwm keeb kwm thiab kev loj hlob ntawm keeb kwm, iav fiber tam yas txhawb cov yas yas cov khoom siv feem ntau siv. Xws li lub npe yog qhov dav dav dua.