Dej Vapor Permeability - qhov tsis sib haum xeeb ntawm kev tiv thaiv khaub ncaws kev sib cais thiab kev nplij siab
Raws li cov lus txhais hauv lub teb chaws tus qauv GB 19082-2009 "Technical Requirements for Medical Disposable Protective Clothing", cov khaub ncaws tiv thaiv yog cov khaub ncaws kws tshaj lij uas muab kev tiv thaiv thiab kev tiv thaiv rau cov neeg ua haujlwm kho mob thaum lawv tau ntsib nrog cov neeg mob uas muaj peev xwm kis tau cov ntshav, cov kua hauv lub cev, zais zis. , thiab cov khoom me me hauv huab cua. Nws tuaj yeem hais tias "kev ua haujlwm tsis zoo" yog qhov tseem ceeb ntawm kev ua haujlwm ntawm cov khaub ncaws tiv thaiv, xws li dej tsis kam, tiv thaiv kev nkag mus los ntawm cov ntshav hluavtaws, hydrophobicity deg, pom cov nyhuv (tsis yog oily particle blocking), thiab lwm yam.
Piv nrog rau cov ntsuas no, muaj ib qho taw qhia uas txawv me ntsis, uas yog "dej vapor permeability" - nws sawv cev rau qhov permeability ntawm cov khaub ncaws tiv thaiv rau dej vapor. Yooj yim muab tso, nws ntsuas cov khaub ncaws tiv thaiv lub peev xwm los coj cov hws tawm hws tawm los ntawm tib neeg lub cev. Qhov siab dua cov dej vapor permeability ntawm cov khaub ncaws tiv thaiv, qhov ntau dua qhov nyem ntawm qhov txhaws thiab tawm hws nyuaj, uas yog qhov tsim nyog rau kev nplij siab ntawm cov neeg ua haujlwm kho mob hnav.
Ib qho kev khuam siab, ib qho sib txawv, rau qee qhov, yog cov teeb meem tsis sib haum xeeb. Kev txhim kho ntawm kev thaiv kev muaj peev xwm ntawm cov khaub ncaws tiv thaiv feem ntau yog txi ib feem ntawm cov permeability, thiaj li ua tiav qhov sib npaug ntawm ob, uas yog ib qho ntawm cov hom phiaj ntawm kev tshawb fawb thiab kev loj hlob ntawm kev lag luam thiab lub hom phiaj tseem ceeb ntawm lub teb chaws tus qauv GB 19082-2009. Yog li ntawd, nyob rau hauv tus txheej txheem, qhov yuav tsum tau rau cov dej vapor permeability ntawm cov ntaub ntawv kho mob pov tseg tiv thaiv cov ntaub ntawv yog kom meej meej: tsis tsawg tshaj li 2500g / (m2·24h), thiab cov kev kuaj kuj muab.
Kev xaiv cov xwm txheej rau kev tiv thaiv khaub ncaws dej vapor kis tus nqi
Raws li kev xeem dhau los ntawm tus kws sau ntawv thiab cov txiaj ntsig kev tshawb fawb ntawm cov ntaub ntawv cuam tshuam, qhov permeability ntawm cov ntaub feem ntau nce nrog qhov kub thiab txias; Thaum qhov kub thiab txias tsis tu ncua, cov permeability ntawm cov ntaub feem ntau txo nrog qhov nce ntawm cov txheeb ze av noo. Yog li ntawd, qhov permeability ntawm cov qauv kuaj nyob rau hauv ib tug tej yam kev mob tsis tuaj yeem sawv cev rau permeability ntsuas nyob rau hauv lwm yam kev xeem!
Cov txheej txheem kev cai rau kev kho mob pov tseg cov khaub ncaws tiv thaiv GB 19082-2009 qhia meej txog cov dej vapor permeability Performance index cov cai rau cov khoom siv kho mob pov tseg cov khaub ncaws tiv thaiv, tab sis nws tsis qhia meej txog cov kev xeem. Tus kws sau ntawv kuj tau tshuaj xyuas cov qauv ntsuas GB / T 12704.1, uas muab peb yam kev xeem: a, 38 ℃, 90% RH; b, 23 ℃, 50% RH; c, 20 ℃, 65% RH. Tus qauv pom zoo kom siv cov xwm txheej raws li qhov kev sim uas nyiam, vim tias nws muaj cov av noo ntau dua thiab qhov nkag mus sai dua, uas yog tsim nyog rau kev sim thiab kev tshawb fawb. Xav txog qhov kev thov tiag tiag ntawm cov khaub ncaws tiv thaiv, nws raug pom zoo tias cov tuam txhab uas muaj peev xwm yuav tsum tau ua qhov kev sim nyob rau hauv cov xwm txheej b (38 ℃, 50% RH) los muab kev ntsuam xyuas ntau dua ntawm cov dej vapor permeability ntawm cov khoom siv tiv thaiv khaub ncaws.
Yuav ua li cas yog qhov kev tiv thaiv tam sim no "dej vapor permeability"
Raws li kev xeem dhau los thiab muaj cov ntaub ntawv muaj txiaj ntsig, qhov permeability ntawm cov khoom siv tseem ceeb thiab cov qauv siv hauv kev tiv thaiv suits feem ntau nyob ib ncig ntawm 500g / (m2·24h) lossis qis dua, xws li 7000g / (m2·24h) lossis siab dua, thiab feem ntau yog concentrated. nruab nrab ntawm 1000 g / (m2·24h) thiab 3000g / (m2·24h). Tam sim no, thaum muaj peev xwm ntau lawm los daws qhov tsis txaus ntawm kev tiv thaiv kev tiv thaiv thiab lwm yam kev tiv thaiv kab mob sib kis thiab tswj cov khoom siv, cov koom haum tshawb fawb thiab cov tuam txhab tau txiav txim siab txog "kev nplij siab" ntawm cov neeg ua haujlwm kho mob thiab tsim cov khoom tiv thaiv rau lawv. Piv txwv li, kev tiv thaiv kev tiv thaiv kub thiab av noo tswj thev naus laus zis tsim los ntawm Huazhong University of Science thiab Technology siv cov cuab yeej siv cua tshuab kom tshem tawm cov dej noo thiab tswj qhov kub hauv cov khaub ncaws tiv thaiv, ua kom qhuav thiab txhim kho kev nplij siab ntawm cov neeg ua haujlwm kho mob hnav.
Xa koj cov lus rau peb:
Post lub sij hawm: Dec-10-2024
