Cov pam pua tawg yog ua los ntawm fibrous insulating refractory refractory fiber. Cov roj ua kom muaj roj ntau muaj qhov sib txawv ntawm fiber ntau, xws li softness, elasticity, thiab tensile muaj zog, thiab yuav ntxiv cov txheej txheem ua ntau ntawv, hlua, hlua, siv, pam thiab hnov; thiab tsis muaj fiber ntau. Kev kub thiab qhov ua kom tsis muaj zog. Raws li cov khoom siv hluav taws xob, cov khoom siv hlau, cov khoom siv hlau, cov khoom siv, cov khoom siv hauv tsev, nkoj, lub dav hlau thiab lwm cov khoom lag luam.
Cov ntaub ntawv tawm
Refractory fibers yog cais ua ob pawg: amorphous (iav) thiab polycrystalline (crystalline). Amorphous refractory fibers, xws li txhuas silicate, siab purity aluminium silicate, chromium-muaj aluminosilicate thiab siab alumina refractory fibers. Polycrystalline refractory fibers, xws li mullite fibres, alumina fibers, thiab zirconia fibers. (Table 1) kuj tau cais tawm raws li qhov siab tshaj plaws uas siv tau ntawm cov fibers refractory.
Cov ntaub ntawv tawm ntawm cov khoom
Cov roj fiber ntau kuj yog ib qho khoom siv hluav taws xob zoo, uas muaj cua kub zoo thiab muaj cua sov cua kub zoo. Kev siv cov khoom siv roj ua kom tsis muaj zog tuaj yeem txuag lub zog, thiab yog ib qho khoom siv txuag hluav taws xob thiab txua hluav taws xob zoo. Kev xyaum ua haujlwm tshaj tawm tias cov ntaub ntawv ntawm refractory fiber rau cov cua sov ua kom muaj hluav taws xob muaj peev xwm txuag hluav taws xob ntau tshaj 15%, thiab siv tau rau hauv cov cua kub cua sov kom txuag tau hluav taws xob ntau tshaj 30%. Nyob rau tib lub sijhawm, nws tuaj yeem txhim kho kev tsim khoom thiab txhim kho cov khoom kom zoo, thiab paub sib zog thiab loj dua kev kho cua sov. , kev ua tau zoo yog qhov zoo. Cov roj fiber ntau yog mos thiab ywj ywj, thiab nws yog ib qho khoom siv sib luag zoo. Vim nws cov rwb thaiv tsev, lub suab nrov txo, oxidation tsis kam, roj tsis kam thiab dej tsis kam, nws yog yooj yim los tsim, yog li nws yog dav siv nyob rau hauv metallurgy, lub tsev cov ntaub ntawv, roj av, tshuaj, shipbuilding, hluav taws xob, aerospace thiab lwm yam kev ua.
Polycrystalline refractory fiber ntau yog ib yam tshiab ntawm cov hluav taws kub rwb thaiv tsev cov khoom tsim tawm tom qab lub ciaj ciam faj ntawm cov roj hmab thaum xyoo 1970. Nws tsuas yog siv rau hauv high-temperature kiln nrog ua haujlwm kub siab tshaj 1400 ° C, uas txuag tau lub zog ntawm 25% ~ 40%. Polycrystalline refractory fibre kuj tseem siv tau ua ib qho khoom siv sib txuas thiab ib daim ntawv pov thawj tus kab mob, thiab daim ntawv thov zoo zoo. Polycrystalline refractory fibers kuj siv nyob hauv thaj chaw ntawm cov cuaj luaj aerospace thiab atomic zog. Tam sim no, polycrystalline refractory fibers uas tau industrially tsim thiab applied internationally mas muaj xws li polycrystalline alumina fibers (Al2O380% ~ 90%, SiO221% ~ 20%) thiab polycrystalline mullite fibers (Al2O727% ~ 79%, SiO221%). ~ 28%) thiab polycrystalline zirconia fiber (ZrO292%, Y2O38%) thiab cov zoo li.
