Cov iav fiber muaj cov yam ntxwv zoo heev thiab siv dav hauv ntau qhov chaw. Nws yog cov khoom siv inorganic uas tsis yog hlau uas tuaj yeem hloov hlau. Vim nws txoj kev loj hlob zoo, cov tuam txhab iav fiber loj tab tom tsom mus rau kev tshawb fawb txog kev ua tau zoo thiab kev ua haujlwm zoo ntawm cov iav fiber.
1 Lub ntsiab lus ntawm iav fiber
Cov iav fiber yog ib hom khoom siv tsis yog hlau uas tsis yog inorganic uas tuaj yeem hloov hlau thiab muaj kev ua tau zoo heev. Nws yog ua los ntawm kev rub cov iav molten rau hauv cov fibers los ntawm kev ua haujlwm ntawm lub zog sab nraud. Nws muaj cov yam ntxwv ntawm lub zog siab, modulus siab thiab elongation qis. Kev tiv taus kub thiab compressibility, coefficient nthuav dav thermal loj, melting point siab, nws qhov kub softening tuaj yeem ncav cuag 550 ~ 750 ℃, tshuaj lom neeg ruaj khov zoo, tsis yooj yim hlawv, muaj qee yam zoo heev xws li kev tiv thaiv corrosion, thiab tau siv dav hauv ntau qhov chaw.
2 Yam ntxwv ntawm cov iav fiber
Lub ntsiab lus yaj ntawm cov iav fiber yog 680 ℃, lub ntsiab lus kub yog 1000 ℃, thiab qhov ceev yog 2.4 ~ 2.7g / cm3. Lub zog tensile yog 6.3 txog 6.9 g / d hauv lub xeev txheem thiab 5.4 txog 5.8 g / d hauv lub xeev ntub.Cov iav fiber muaj kev tiv thaiv cua sov zoo thiab yog cov khoom siv rwb thaiv tsev zoo nrog kev rwb thaiv tsev zoo, uas tsim nyog rau kev tsim cov khoom rwb thaiv tsev thermal thiab cov ntaub ntawv tiv taus hluav taws.
3 Cov khoom siv ntawm cov iav fiber
Cov iav siv rau hauv kev tsim cov iav fibers txawv ntawm cov iav siv rau hauv lwm cov khoom iav. Cov iav siv rau hauv kev tsim cov iav fibers muaj cov khoom hauv qab no:
(1)E-iav,tseem hu ua alkali-free iav, yog cov iav borosilicate. Ntawm cov ntaub ntawv siv tam sim no hauv kev tsim cov iav fibers, alkali-free iav yog qhov siv dav tshaj plaws. Alkali-free iav muaj kev rwb thaiv tsev zoo thiab cov khoom siv kho tshuab, thiab feem ntau yog siv los tsim cov iav insulating thiab cov iav fibers muaj zog, tab sis alkali-free iav tsis tiv taus inorganic acid corrosion, yog li nws tsis haum rau siv hauv cov chaw acidic. Peb muaj e-iavfiberglass roving, e-iavfiberglass roving,thiab e-iavdaim ntaub fiberglass.
(2)C-iav, tseem hu ua iav alkali nruab nrab. Piv nrog iav tsis muaj alkali, nws muaj kev tiv thaiv tshuaj zoo dua thiab cov khoom siv hluav taws xob thiab kho tshuab tsis zoo. Ntxiv diboron trichloride rau iav alkali nruab nrab tuaj yeem tsimiav fiber nto lev,uas muaj cov yam ntxwv ntawm kev tiv thaiv corrosion. Boron-free medium-alkali iav fibers feem ntau yog siv rau hauv kev tsim cov ntaub lim thiab cov ntaub qhwv.
(3)Cov iav fiber ntau muaj zog,Raws li lub npe qhia, cov iav fiber muaj zog siab thiab modulus siab. Nws lub zog tensile fiber yog 2800MPa, uas yog li 25% siab dua li ntawm cov iav fiber alkali-free, thiab nws cov elastic modulus yog 86000MPa, uas yog siab dua li ntawm E-iav fiber. Cov zis ntawm cov iav fiber muaj zog siab tsis siab, ua ke nrog nws lub zog siab thiab modulus siab, yog li nws feem ntau siv rau hauv tub rog, aerospace thiab cov khoom siv kis las thiab lwm yam teb, thiab nws tsis siv dav hauv lwm yam teb.
(4)AR iav fiber, tseem hu ua alkali-resistant iav fiber, yog ib qho inorganic fiber. Cov iav fiber alkali-resistant muaj alkali zoo tiv taus thiab tuaj yeem tiv taus corrosion ntawm cov alkali siab. Nws muaj cov modulus elastic siab heev thiab kev cuam tshuam tsis kam, lub zog tensile thiab lub zog khoov. Nws kuj muaj cov yam ntxwv ntawm tsis-combustibility, te tsis kam, kub thiab av noo tsis kam, tawg tsis kam, impermeability muaj zog plasticity thiab yooj yim molding. Cov khoom siv tav rau iav fiber reinforced concrete.
4 Kev npaj cov iav fibers
Cov txheej txheem tsim khoom ntawmiav fiberFeem ntau yog ua ntej yaj cov khoom siv raw, thiab tom qab ntawd ua kev kho mob fiberizing. Yog tias nws yuav tsum tau ua rau hauv cov duab ntawm cov iav fiber pob lossis fiberglass rods, kev kho mob fiberizing tsis tuaj yeem ua ncaj qha. Muaj peb txoj kev fibrillation rau cov iav fibers:
Txoj kev kos duab: txoj kev tseem ceeb yog txoj kev kos duab filament nozzle, ua raws li txoj kev kos duab iav pas nrig thiab txoj kev kos duab yaj;
Txoj kev centrifugal: nruas centrifugation, kauj ruam centrifugation thiab kab rov tav porcelain disc centrifugation;
Txoj kev tshuab: txoj kev tshuab thiab txoj kev tshuab nozzle.
Cov txheej txheem saum toj no kuj tseem siv tau ua ke, xws li kos duab-tshuab thiab lwm yam. Kev ua tiav tom qab ua tiav tom qab ua fiberizing. Kev ua tiav tom qab ntawm cov iav fibers yog muab faib ua ob kauj ruam tseem ceeb hauv qab no:
(1) Thaum lub sijhawm tsim cov iav fibers, cov iav filaments ua ke ua ntej winding yuav tsum tau sizing, thiab cov luv luv fibers yuav tsum tau txau nrog roj nplua nyeem ua ntej raug sau thiab drummed nrog qhov.
(2) Kev ua ntxiv, raws li qhov xwm txheej ntawm cov iav luv luv thiab luv luviav fiber roving muaj cov kauj ruam hauv qab no:
① Cov kauj ruam ua cov iav fiber luv luv:
②Cov kauj ruam ua cov iav staple fiber roving:
Chongqing Dujiang Composites Co., Ltd.
Tiv tauj peb:
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Lub sijhawm tshaj tawm: Cuaj hlis-13-2022
