xov xwm

Hauv kev nkag siab dav, peb txoj kev nkag siab ntawm cov iav fiber ntau ib txwm tau hais tias nws yog cov khoom siv tsis zoo uas tsis yog hlau, tab sis nrog kev tshawb fawb tob, peb paub tias muaj ntau hom iav fiber ntau, thiab lawv muaj kev ua tau zoo, thiab muaj. muaj ntau yam zoo Qhov zoo. Piv txwv li, nws cov neeg kho tshuab lub zog yog tshwj xeeb yog siab, thiab nws cov cua kub tsis kam thiab corrosion kuj yog tshwj xeeb zoo. Nws yog qhov tseeb tias tsis muaj cov khoom zoo meej, thiab cov iav fiber ntau kuj muaj nws tus kheej qhov tsis zoo uas tsis tuaj yeem tsis quav ntsej, uas yog, nws tsis hnav-tiv taus thiab ua rau brittleness. Yog li ntawd, hauv kev siv tswv yim, peb yuav tsum siv peb lub zog thiab zam peb qhov tsis muaj zog.

Cov ntaub ntawv raw ntawm iav fiber ntau yog yooj yim kom tau, feem ntau muab pov tseg cov iav qub los yog iav khoom. Cov iav fiber ntau zoo heev, thiab ntau tshaj 20 iav monofilaments ua ke yog sib npaug rau cov plaub hau tuab. Cov iav fiber ntau tuaj yeem siv los ua cov khoom siv ntxiv hauv cov ntaub ntawv sib xyaw. Vim qhov kev tshawb fawb tob ntawm iav fiber ntau nyob rau xyoo tas los no, nws ua lub luag haujlwm tseem ceeb hauv peb cov khoom tsim thiab lub neej. Ob peb kab lus tom ntej no feem ntau piav qhia txog cov txheej txheem tsim khoom thiab kev siv cov iav fiber ntau. Kab lus no qhia txog cov khoom, cov khoom tseem ceeb, cov yam ntxwv tseem ceeb, thiab kev faib khoom ntawm cov iav fiber ntau. Ob peb tsab xov xwm tom ntej no yuav tham txog nws cov txheej txheem tsim khoom, kev tiv thaiv kev nyab xeeb, Kev siv tseem ceeb, kev tiv thaiv kev nyab xeeb, kev lag luam xwm txheej thiab kev tsim kho kev cia siab tau piav qhia.

Ikev taw qhia

1.1 iav fiber ntau

Lwm qhov zoo ntawm cov iav fiber ntau yog nws lub zog tensile siab, uas tuaj yeem ncav cuag 6.9g / d nyob rau hauv lub xeev tus qauv thiab 5.8g / d nyob rau hauv ntub dej. Cov khoom zoo li no ua rau cov iav fiber ntau tuaj yeem siv thoob ntiaj teb ua cov khoom siv ntxiv. Nws muaj qhov ntom ntom ntawm 2.54. Cov iav fiber ntau kuj yog kub-resistant, thiab nws khaws nws cov khoom qub ntawm 300 ° C. Fiberglass kuj qee zaum dav siv los ua cov thermal rwb thaiv tsev thiab cov khoom siv tiv thaiv, ua tsaug rau nws cov hluav taws xob insulating thiab nws tsis muaj peev xwm corrode yooj yim.

1.2 Cov khoom xyaw tseem ceeb

Qhov sib xyaw ntawm iav fiber ntau yog qhov nyuaj. Feem ntau, cov khoom tseem ceeb uas tau lees paub los ntawm txhua tus yog silica, magnesium oxide, sodium oxide, boron oxide, aluminium oxide, calcium oxide thiab lwm yam. Lub cheeb ntawm lub monofilament ntawm iav fiber ntau yog li 10 microns, uas yog sib npaug rau 1/10 ntawm txoj kab uas hla ntawm cov plaub hau. Txhua pob ntawm fibers yog tsim los ntawm ntau txhiab tus monofilaments. Cov txheej txheem kos duab txawv me ntsis. Feem ntau, cov ntsiab lus ntawm silica hauv iav fiber ntau yog 50% txog 65%. Lub zog tensile ntawm iav fibers nrog aluminium oxide cov ntsiab lus ntau dua 20% yog qhov siab, feem ntau muaj zog iav fiber ntau, thaum lub txhuas oxide cov ntsiab lus ntawm alkali-dawb iav fibers feem ntau yog li 15%. Yog tias koj xav ua kom cov iav fiber ntau muaj qhov loj dua elastic modulus, koj yuav tsum xyuas kom meej tias cov ntsiab lus ntawm magnesium oxide ntau dua 10%. Vim yog cov iav fiber ntau uas muaj me me ntawm ferric oxide, nws cov kev tiv thaiv corrosion tau raug txhim kho mus rau qhov sib txawv.

1.3 Cov yam ntxwv tseem ceeb

1.3.1 Cov ntaub ntawv raw thiab kev siv

Piv nrog cov inorganic fibers, cov khoom ntawm iav fibers yog ntau superior. Nws yog qhov nyuaj rau ignite, tshav kub-resistant, tshav kub-insulating, ruaj khov dua, thiab tensile-resistant. Tab sis nws yog nkig thiab muaj kev hnav tsis zoo. Siv los ua cov yas muaj zog los yog siv los ntxiv dag zog rau cov roj hmab, raws li cov khoom siv reinforcing iav fiber ntau muaj cov yam ntxwv hauv qab no:

(1) Nws lub zog tensile zoo dua li lwm cov ntaub ntawv, tab sis qhov elongation tsawg heev.

(2) Lub elastic coefficient yog tsim nyog.

(3) Tsis pub dhau qhov kev txwv elastic, cov iav fiber ntau tuaj yeem txuas rau lub sijhawm ntev thiab muaj zog tensile, yog li nws tuaj yeem nqus tau ntau lub zog ntawm lub ntsej muag.

(4) Txij li cov iav fiber ntau yog inorganic fiber, inorganic fiber ntau muaj qhov zoo, nws tsis yooj yim rau hlawv thiab nws cov khoom siv tshuaj muaj zog.

(5) Nws tsis yooj yim rau nqus dej.

(6) Thaum tshav kub kub-resistant thiab ruaj khov nyob rau hauv cov xwm, tsis yooj yim rau react.

(7) Nws cov txheej txheem ua tau zoo heev, thiab nws tuaj yeem ua tiav rau hauv cov khoom lag luam zoo hauv ntau cov duab xws li cov hlua, cov ntaub, cov pob, thiab cov ntaub npuag.

(8) Muaj peev xwm kis tau lub teeb.

(9) Vim tias cov khoom siv tau yooj yim, tus nqi tsis kim.

(10) Thaum kub kub, es tsis txhob hlawv, nws melts mus rau hauv cov hlaws dai ua kua.

1.4 Kev faib tawm

Raws li cov qauv sib txawv, iav fiber ntau tuaj yeem muab faib ua ntau hom. Raws li cov duab sib txawv thiab qhov ntev, nws tuaj yeem muab faib ua peb hom: cov fibers txuas ntxiv, fiber ntau paj rwb thiab ntev fibers. Raws li cov khoom sib txawv, xws li cov ntsiab lus alkali, nws tuaj yeem muab faib ua peb hom: alkali-dawb iav fiber ntau, nruab nrab-alkali iav fiber ntau, thiab high-alkali iav fiber ntau.

1.5 Cov khoom siv raw khoom

Hauv kev tsim khoom tiag tiag, txhawm rau tsim cov iav fiber ntau, peb xav tau alumina, quartz xuab zeb, limestone, pyrophyllite, dolomite, soda tshauv, mirabilite, boric acid, fluorite, av iav fiber, thiab lwm yam.

1.6 Txoj kev tsim khoom

Cov txheej txheem ntau lawm tuaj yeem muab faib ua ob pawg: ib qho yog kom yaj cov iav fibers ua ntej, thiab tom qab ntawd ua cov khoom siv iav los yog pas nrig nrog cov kab me me. Tom qab ntawd, nws yog rhuab thiab rov yaj nyob rau hauv ntau txoj kev los ua cov fibers zoo nrog ib txoj kab uas hla ntawm 3-80 μm. Lwm hom kuj melts lub khob ua ntej, tab sis tsim cov iav fibers es tsis txhob rods los yog spheres. Tom qab ntawd cov qauv raug rub los ntawm platinum alloy phaj siv cov txheej txheem kos duab. Cov khoom uas tshwm sim yog hu ua nruam fibers. Yog tias cov fibers tau kos los ntawm cov txheej txheem ntawm cov menyuam, cov khoom ua tau raug hu ua cov fibers tsis tu ncua, tseem hu ua txiav-rau-ntev iav fibers, thiab staple fibers.

1.7 Qib

Raws li qhov sib txawv muaj pes tsawg leeg, kev siv thiab cov khoom ntawm iav fiber ntau, nws tau muab faib ua ntau qib. Cov iav fibers uas tau ua lag luam thoob ntiaj teb yog raws li hauv qab no:

1.7.1 E-iav

Nws yog borate iav, uas tseem hu ua alkali-dawb iav hauv lub neej txhua hnub. Vim nws muaj ntau yam zoo, nws yog qhov siv ntau tshaj plaws. Nws yog tam sim no siv dav tshaj plaws, txawm tias nws tau siv dav, tab sis nws kuj muaj qhov tsis txaus ntseeg. Nws yooj yim reacts nrog inorganic ntsev, yog li nws yog ib qho nyuaj rau khaws cia nyob rau hauv ib tug acidic ib puag ncig.

1.7.2 C-iav

Hauv kev tsim khoom tiag tiag, nws tseem hu ua nruab nrab alkali iav, uas muaj cov tshuaj lom neeg ruaj khov thiab cov kua qaub zoo. Nws qhov tsis zoo yog tias lub zog txhua yam tsis siab thiab kev ua haujlwm hluav taws xob tsis zoo. Cov chaw sib txawv muaj cov qauv sib txawv. Hauv kev lag luam iav fiber ntau hauv tsev, tsis muaj boron keeb hauv nruab nrab alkali iav. Tab sis nyob rau hauv txawv teb chaws iav fiber ntau kev lag luam, dab tsi lawv tsim yog nruab nrab alkali iav uas muaj boron. Tsis tsuas yog cov ntsiab lus sib txawv, tab sis kuj yog lub luag haujlwm ua los ntawm nruab nrab-alkali iav hauv tsev thiab txawv teb chaws kuj txawv. Cov iav fiber ntau saum npoo mats thiab iav fiber ntau rods ua txawv teb chaws yog ua los ntawm nruab nrab alkali iav. Hauv kev tsim khoom, nruab nrab alkali iav kuj tseem ua haujlwm hauv asphalt. Hauv kuv lub teb chaws, lub hom phiaj yog vim li cas nws tau siv dav vim nws tus nqi qis heev, thiab nws muaj zog nyob txhua qhov chaw hauv cov ntaub qhwv thiab lim ntaub kev lag luam.

Fiberglass pas nrig

1.7.3 iav fiber ntau A iav

Hauv kev tsim khoom, tib neeg kuj hu nws lub iav siab-alkali, uas belongs rau sodium silicate iav, tab sis vim nws cov dej tsis kam, nws feem ntau tsis tsim los ua iav fiber ntau.

1.7.4 Fiberglass D iav

Nws tseem hu ua dielectric iav thiab feem ntau yog cov khoom siv tseem ceeb rau dielectric iav fibers.

1.7.5 iav fiber ntau lub zog iav

Nws lub zog yog 1/4 siab dua li ntawm E-iav fiber ntau, thiab nws cov elastic modulus siab dua li ntawm E-iav fiber ntau. Vim nws muaj ntau yam zoo, nws yuav tsum tau siv dav, tab sis vim nws cov nqi siab, nws tam sim no tsuas yog siv rau qee qhov tseem ceeb, xws li kev lag luam tub rog, aerospace thiab lwm yam.

1.7.5 iav fiber ntau AR iav

Nws tseem hu ua alkali-resistant iav fiber ntau, uas yog cov ntshiab inorganic fiber ntau thiab yog siv los ua cov khoom siv hauv cov iav fiber reinforced pob zeb. Hauv qee qhov xwm txheej, nws tuaj yeem hloov cov hlau thiab asbestos.

1.7.6 iav fiber ntau E-CR iav

Nws yog ib qho kev txhim kho boron-dawb thiab alkali-dawb iav. Vim tias nws cov dej tsis kam yog ze li ntawm 10 npaug siab dua li ntawm alkali-dawb iav fiber ntau, nws tau siv dav hauv kev tsim cov khoom siv dej-resistant. Tsis tas li ntawd, nws cov kua qaub kuj tseem muaj zog heev, thiab nws tuav txoj haujlwm tseem ceeb hauv kev tsim khoom thiab siv cov kav dej hauv av. Ntxiv rau cov iav fiber ntau uas tau hais los saum toj no, cov kws tshawb fawb tau tam sim no tsim ib hom iav fiber ntau tshiab. Vim tias nws yog cov khoom tsis muaj boron, nws txaus siab rau tib neeg txoj kev nrhiav kev tiv thaiv ib puag ncig. Nyob rau hauv xyoo tas los no, muaj lwm hom iav fiber ntau uas nrov dua, uas yog iav fiber ntau nrog ob chav iav muaj pes tsawg leeg. Hauv cov khoom siv iav ntaub plaub tam sim no, peb tuaj yeem pom nws muaj.

1.8 Kev txheeb xyuas cov iav fibers

Cov txheej txheem ntawm kev paub qhov txawv iav fiber ntau yog qhov yooj yim, uas yog, muab cov iav fibers tso rau hauv dej, cua sov kom txog thaum cov dej npau npau, thiab khaws cia rau 6-7 teev. Yog tias koj pom tias cov lus qhia warp thiab weft ntawm cov iav fibers ua tsawg compact, nws yog high alkali iav fibers. . Raws li cov qauv sib txawv, muaj ntau txoj hauv kev faib cov iav fibers, uas feem ntau muab faib los ntawm qhov kev xav ntawm qhov ntev thiab txoj kab uas hla, muaj pes tsawg leeg thiab kev ua tau zoo.

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