Kub resistant yoj-transmissive cov ntaub ntawv yog ib tug multifunctional dielectric cov ntaub ntawv uas yuav tiv thaiv kev sib txuas lus, telemetry, kev taw qhia, detonation thiab lwm yam systems ntawm lub aircraft nyob rau hauv ib txwm huab cua. Nws yog dav siv nyob rau hauv spaceships, missiles, launching tsheb thiab rov qab nyob rau hauv reentry tsheb xws li satellites, daim ntawv thov yuav muab faib ua radomes thiab kav hlau txais xov qhov rais.
Cov qauv ntsuas tseem ceeb ntawm cov khoom siv hluav taws xob tiv thaiv hluav taws xob yog cov khoom siv hluav taws xob dielectric, thermal shock resistance thiab mechanical zog, thiab lwm yam. Cov khoom saum toj no sib haum rau cov kev xav tau ntawm yoj kis tau tus mob, rwb thaiv tsev kub thiab load bearing, feem. Feem ntau siv yoj-kho cov ntaub ntawv feem ntau suav nrog cov organic fibers sawv cev los ntawm aramid fibers thiab inorganic fibers sawv cev los ntawm quartz fibers. Organic fiber cov ntaub ntawv muaj cov cua sov tsis zoo, tsis muaj zog, thiab muaj kev laus thiab deformation.
Lawv tsis haum rau ua yoj-hloov cov khoom nyob rau hauv aircraft. Ntawm cov ntaub ntawv inorganic, quartz fiber yog ib qho khoom siv fiber ntau nrog cov khoom siv hluav taws xob zoo thiab cov khoom dielectric.
Quartz fiber ntau tuaj yeem ua haujlwm hauv ib puag ncig ntawm 1050 ℃ rau lub sijhawm ntev. Nyob rau tib lub sij hawm, nyob rau hauv lub cheeb tsam ntawm high zaus thiab qis dua 700 ℃, quartz fiber muaj qhov qis tshaj plaws thiab ruaj khov dielectric tsis tu ncua thiab dielectric poob, thiab tib lub sij hawm khaws ntau tshaj 70% lub zog, nws tuaj yeem siv qhov kev txhawb zog ntawm cov high-temperature yoj-permeable ceramic matrix composite khoom yog cov khoom siv fiber ntau inorganic uas tau siv thiab muaj kev ua haujlwm siab, siab kub tsis kam, yoj nkag mus thiab zoo dielectric zog. Quartz fiber kuj muaj cov yam ntxwv ntawm corrosion kuj. Ntxiv nrog rau hydrofluoric acid thiab kub phosphoric acid, lwm cov kua thiab gaseous halogen acids thiab cov kua qaub zoo tib yam thiab cov hauv paus tsis muaj zog tsis muaj kev cuam tshuam rau nws, thiab lawv kuj yog insoluble hauv dej thiab organic solvents.
May-12-2020