Ceramic fiber ntau daim pam yog cov khoom siv rwb thaiv tsev nrov paub txog lawv cov khoom thermal tshwj xeeb. Lawv tau siv dav hauv ntau yam kev lag luam, suav nrog aerospace, tsim hluav taws xob, thiab kev tsim khoom, vim lawv lub peev xwm siab. Ib qho tseem ceeb tshaj plaws uas ua rau lawv cov txiaj ntsig zoo yog lawv cov thermal conductivity tsawg.
Thermal conductivity yog ib qho kev ntsuas ntawm cov khoom muaj peev xwm ua kom sov. Nws yog raws li qhov ntau ntawm cov cua sov uas ntws los ntawm ib cheeb tsam ntawm cov khoom nyob rau hauv ib chav tsev ntawm lub sij hawm ib chav tsev kub qhov sib txawv. Hauv cov ntsiab lus yooj yim, thermal conductivity txiav txim siab npaum li cas cov khoom tuaj yeem hloov lub zog hluav taws xob.
Ceramic fiber ntau daim pam muaj cov thermal conductivity tsawg heev, uas yog ib qho kev xav tau ntawm insulating daim ntaub ntawv. Qhov qis thermal conductivity ntawm cov pam vov no feem ntau yog los ntawm cov qauv tsim tshwj xeeb ntawm cov ceramic fibers.
Ceramic fibers yog tsim los ntawm kev sib xyaw ntawm alumina thiab silica cov ntaub ntawv, uas muaj inherently tsawg thermal conductivity. Cov fibers no yog nyias thiab hnav, nrog qhov sib piv siab, txhais tau tias lawv qhov ntev yog ntau dua li lawv txoj kab uas hla. Cov qauv no tso cai rau huab cua ntau dua thiab cov voids nyob rau hauv daim pam, uas ua raws li thermal teeb meem thiab cuam tshuam kev hloov ntawm tshav kub.
Lub thermal conductivity ntawm daim pam fiber ntau tuaj yeem sib txawv nyob ntawm seb hom thiab muaj pes tsawg leeg ntawm daim pam, nrog rau nws qhov ceev. Feem ntau, thermal conductivity ntawm ceramic fiber pam yog li ntawm 0.035 txog 0.08 W / m·K. Qhov no qhia tau hais tias cov pam pua chaw ceramic muaj cov khoom siv rwb thaiv tsev zoo, vim tias lawv muaj cov thermal conductivity qis dua piv rau lwm cov ntaub ntawv rwb thaiv tsev xws li fiberglass lossis pob zeb wool.
Tsawg thermal conductivity ntawmceramic fiber pammuaj ntau yam txiaj ntsig hauv daim ntawv thov. Ua ntej, nws yuav pab txo kom tsis txhob muaj cua sov los yog nce, ua kom lub zog ua haujlwm zoo hauv cov txheej txheem thiab cov tsev. Los ntawm kev tiv thaiv kev hloov ntawm cov cua sov, cov pam pua chaw fiber ntau pab tswj qhov chaw ruaj khov thiab tswj kom txo tau lub zog uas yuav tsum tau ua kom sov lossis txias qhov chaw.
Tsis tas li ntawd, cov thermal conductivity tsawg ntawm cov pam pua chaw pab txhawb rau lawv cov kev tiv thaiv zoo rau qhov kub thiab txias. Cov pam vov no tuaj yeem tiv taus kub txog 2300°F (1260°C) thaum tuav lawv cov qauv kev ncaj ncees thiab insulating zog. Qhov no ua rau zoo tagnrho rau cov ntawv thov uas muaj qhov kub thiab txias ib puag ncig, xws li cov kab hluav taws xob lossis cov kiln.
Post lub sij hawm: Dec-06-2023
