2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov ntaub ntawv no nthuav dav lub National Institute for Occupational Safety and He alth kev tshuaj xyuas cov ntaub ntawv qhia txog kev ua haujlwm raug rau huab cua refractory ceramic fibers (RCFs) thiab cov ntaub ntawv hais txog cov txiaj ntsig kev noj qab haus huv tau los ntawm kev sim thiab kev tshawb fawb txog kab mob sib kis.
Qhov twg ntawm cov no yog cov fiber ntau refractory?
Refractory ceramic fibers (RCFs) yog amorphous fibers uas muaj nyob rau hauv chav kawm ntawm cov ntaub ntawv hu ua hluavtaws vitreous fibers (SVFs), kuj hu ua man-made mineral fibers (MMMFs), uas suav nrog alkaline earth silicate ntaub plaub, iav ntaub plaub, pob zeb (pob zeb) wool, slag wool, thiab tshwj xeeb-lub hom phiaj iav fibers.
Dab tsi yog qhov refractory ceramic?
Refractory ceramics yog cov khoom siv hluav taws kub-resistant engineered tsim los tiv thaiv huab cua kub yuav tsum taulos ntawm kev tsim khoom thiab lwm yam kev lag luam.
Koj ua li cas thiaj ua tau cov fiber ntau ceramic?
Ceramic Fiber Insulation
- Hnav khaub ncaws ntev thiab hnab looj tes.
- Hnav lub taub hau thiab qhov muag tiv thaiv nrog rau lub tshuab ua pa lossis lub qhov ncauj qhov ntswg kom tiv thaiv kev nqus plua plav.
- Ntxuav txhua qhov chaw ntawm daim tawv nqaij nrog xab npum thiab dej tom qab tuav cov khoom siv fiber ntau ceramic.
- Ntxuav RCF-soiled khaub ncaws nquag thiab sib cais los ntawm lwm yam khaub ncaws.
YPuas yog ceramic fibers fireproof?
Kub Kub Kub Nplaim Resistant Ceramic Fiber Insulation Batt. InsulBattä 2300 Kub kub koob txhaj tshuaj ceramicfiber ntau rwb thaiv tsev yuav tsis hlawv thiab yuav tiv taus qhov kub thiab txias ntawm 2300 ° F / 1260 ° C. Cov khoom no tiv taus cov kua qaub thiab alkalis feem ntau thiab tsis cuam tshuam los ntawm feem ntau cov tshuaj dawb thiab cov kuab tshuaj.
Pom zoo:
Cov pob zeb refractory tuaj yeem pom nyob qhov twg?
Cov Hluav Taws Xob Hluav Taws Xob yog cov tiv taus kev puas tsuaj thiab tshuaj lom neeg huab cua yog li lawv pom hauv lub thawv hluav taws kub ntawm cov ntoo thiab ntsev kilns, thiab cov nroj tsuag hluav taws xob. Muaj ntau ntau cov duab kos rau tsim cov ntaub ntawv nyuaj thiab arches.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Thaum xaws rau ntawm lub loom dab tsi hu ua fibers?
Fibers uas khiav longitudinally yog hu ua warp thiab cov fibers uas khiav crossways yog hu ua weft. Txoj kev warp thiab weft ua ke yog hu ua weave; twill, satin weave, thiab plain weave yog peb qhov qauv tsim. Thaum xaws rau ntawm ib lub loom Dab tsi yog ob txheej ntawm fibers hu ua?
Dab tsi yog cov coarser thiab finer wool fibers siv rau?
Txhua cov ntaub plaub zoo dua li 25 microns tuaj yeem siv rau cov tsoos tsho, thaum cov qib coarser yog siv rau cov khaub ncaws sab nrauv lossis ntaub pua plag. Cov ntaub plaub zoo dua, qhov softer nws yog, thaum coarser qib yog ntau ruaj thiab tsis tshua muaj pilling.
Nyob rau hauv reticulin fibers?
Ntau reticulin staining (reticulin fibrosis) yog txuam nrog ntau benign thiab malignant yam thaum nce trichrome staining (collagen fibrosis) tshwj xeeb tshaj yog nyob rau theem kawg ntawm cov kab mob loj myeloproliferative kab mob. Mloog. Cov kab mob myeloproliferative mob ntev yog ib pawg pab pawg ntawm cov qog ntshav qog qeeb qeeb uas cov pob txha pob txha ua rau ntau cov qe ntshav liab txawv txav, cov qe ntshav dawb, lossis platelets, uas ua rau hauv cov ntshav.
