Moisture permeability - qhov sib txawv ntawm kev sib cais thiab kev nplij siab ntawm cov khaub ncaws tiv thaiv

Raws li lub ntsiab lus ntawm lub teb chaws tus qauv GB 19092-2009, cov khaub ncaws tiv thaiv kev kho mob yog cov khaub ncaws kws tshaj lij tsim los muab kev tiv thaiv thiab kev tiv thaiv rau cov neeg ua haujlwm kho mob thaum lawv tiv nrog cov neeg mob uas muaj peev xwm kis tau cov ntshav, cov kua dej hauv lub cev, cov kua qaub thiab cov pa tawm hauv chaw ua haujlwm. Nws tuaj yeem hais tias "kev ua haujlwm tsis zoo" yog qhov ntsuas tseem ceeb ntawm cov khaub ncaws tiv thaiv kev noj qab haus huv, xws li kev tiv thaiv permeability, tshuaj tiv thaiv cov ntshav nkag mus, cov dej noo tsis kam, cov nyhuv lim dej (txhim kho rau cov khoom tsis muaj roj), thiab lwm yam.
Ib qho kev qhia txawv me ntsis yog cov dej permeability, qhov ntsuas ntawm cov khaub ncaws muaj peev xwm nkag mus rau dej vapor. Hauv cov ntsiab lus yooj yim, nws yog los ntsuas lub peev xwm ntawm cov khaub ncaws tiv thaiv kom tawg tawm hws vapor los ntawm tib neeg lub cev. Qhov ntau dua cov dej noo permeability ntawm cov khaub ncaws tiv thaiv, cov teeb meem ntawm suffocation thiab hws tuaj yeem daws tau zoo, uas yog qhov zoo dua rau kev hnav khaub ncaws ntawm cov neeg ua haujlwm kho mob.
Ib qho kev tawm tsam, ib qho me me, los ntawm ib qho twg, yog qhov tsis sib haum xeeb rau ib leeg. Kev txhim kho ntawm kev muaj peev xwm ntawm cov khaub ncaws tiv thaiv feem ntau yog kev txi ib feem ntawm kev muaj peev xwm nkag mus, thiaj li ua tiav kev sib koom ua ke ntawm ob, uas yog ib qho ntawm cov hom phiaj ntawm kev tshawb fawb thiab kev loj hlob ntawm kev lag luam tam sim no, thiab tseem yog thawj lub hom phiaj ntawm lub teb chaws tus qauv. GB 19082-2009. Yog li ntawd, nyob rau hauv tus txheej txheem, cov dej permeability ntawm cov ntaub ntawv kho mob pov tseg tiv thaiv khaub ncaws yog teev: tsis tsawg tshaj li 2500g / (m2·24h), thiab txoj kev kuaj kuj muab.

Kev xaiv ntawm noo noo permeability xeem tej yam kev mob rau kev kho mob khaub ncaws tiv thaiv

Raws li tus kws sau ntawv qhov kev sim thiab cov ntaub ntawv tshawb fawb txog cov txiaj ntsig, cov dej permeability ntawm cov ntaub feem ntau pib nce nrog qhov kub thiab txias; Thaum qhov kub thiab txias tsis tu ncua, noo noo permeability ntawm cov ntaub txo nrog qhov nce ntawm cov txheeb ze av noo. Yog li ntawd, noo noo permeability ntawm ib tug qauv nyob rau hauv ib qho kev kuaj mob tsis sawv cev rau cov dej permeability ntsuas nyob rau hauv lwm yam kev kuaj mob!
Cov kev cai tshwj xeeb rau cov khaub ncaws tiv thaiv kev kho mob GB 19082-2009 Txawm hais tias qhov ntsuas qhov yuav tsum tau muaj rau kev ya raws permeability ntawm cov ntaub ntawv pov tseg tiv thaiv kev kho mob tau teev tseg, cov xwm txheej kuaj tsis tau teev tseg. Tus sau kuj tau xa mus rau tus qauv xeem GB / T 12704.1, uas muab peb yam kev xeem: A, 38 ℃, 90% RH; B, 23 ℃, 50% RH; C, 20 ℃, 65% RH. Tus qauv qhia tias pawg A xeem yuav tsum tau nyiam dua, uas muaj cov av noo siab dua thiab nkag mus sai dua thiab tsim nyog rau kev soj ntsuam kuaj. Xav txog qhov kev thov tiag tiag ntawm cov khaub ncaws tiv thaiv, nws tau pom zoo tias cov tuam txhab muaj peev xwm tuaj yeem ntxiv cov kev ntsuam xyuas hauv qab 38 ℃ thiab 50% RH kuaj mob, txhawm rau ntsuas cov dej noo permeability ntawm cov ntaub ntawv tiv thaiv khaub ncaws ntau dua.

Dab tsi yog qhov noo noo permeability ntawm cov khaub ncaws tiv thaiv kev kho mob tam sim no

Raws li kev xeem dhau los thiab cov ntaub ntawv muaj feem xyuam, cov dej noo permeability ntawm cov ntaub ntawv kho mob tiv thaiv khaub ncaws ntawm cov ntaub ntawv tseem ceeb thiab cov qauv yog li 500g / (m2·24h) lossis 7000g / (m2·24h), feem ntau yog concentrated hauv 1000 g / (m2·· 24h) txog 3000g / (m2·24h). Tam sim no, thaum nthuav dav cov peev txheej los daws qhov tsis txaus ntawm cov khaub ncaws tiv thaiv kev kho mob thiab lwm yam khoom siv, cov chaw tshawb fawb kev tshawb fawb thiab cov tuam txhab tau tsim kho cov neeg ua haujlwm kho mob khaub ncaws kom xis nyob. Piv txwv li, qhov ntsuas kub thiab av noo tswj thev naus laus zis ntawm kev tiv thaiv khaub ncaws tsim los ntawm Huazhong University of Science thiab Technology tau txais kev kho cua tshuab hauv cov khaub ncaws tiv thaiv kom dehumidify thiab kho qhov kub, thiaj li ua kom cov khaub ncaws tiv thaiv kom qhuav thiab txhim kho kev nplij siab. cov neeg ua haujlwm kho mob.


Post lub sij hawm: Jan-03-2022