Taw qhia ntawm Foaming Tus Neeg Sawv Cev rau Polyurethane Rigid Ua npuas ncauj siv hauv kev tsim kho
Nrog rau kev nce qib tshiab rau kev tiv thaiv hluav taws xob thiab kev txuag ib puag ncig, cov khoom siv hluav taws xob ib puag ncig ntawm cov ntaub ntawv tsim tsev ua ntau dua thiab tseem ceeb dua. Ntawm lawv, polyurethane rigid ua npuas ncauj yog cov khoom siv rwb thaiv tsev zoo heev, nrog lwm qhov zoo, yog li nws tau siv dav hauv kev ua haujlwm hauv tsev.
Tus neeg sawv cev ua npuas ncauj yog ib qho ntawm lub ntsiab additives nyob rau hauv zus tau tej cov polyurethane siv zog ua npuas ncauj. Raws li nws tau ua mechanism, nws tuaj yeem faib ua ob pawg: cov neeg sawv cev ua npuas ncauj thiab ua npuas ncauj tus neeg sawv cev.
Kev faib tawm ua npuas ncauj
Tus neeg sawv cev ua npuas ncauj yog ib qho ntxiv uas tsim cov roj thiab ua npuas dej polyurethane cov ntaub ntawv thaum cov tshuaj tiv thaiv ntawm Isocyanates thiab Polyols. Dej yog tus sawv cev ntawm tus neeg sawv cev ua npuas ncauj, uas cuam tshuam nrog ownocyanate tivthaiv los ua cov roj carbon dioxide, thiaj li ua npuas ncauj cov polyurethane khoom. Tus neeg sawv cev ntawm lub cev yog ib qho kev sib ntxiv ntxiv rau hauv cov txheej txheem ntau lawm hauv cov khoom siv ntawm polyurethane nyuaj ua npuas dej los ntawm kev ua haujlwm ntawm lub cev. Cov neeg ua npuas ncauj siv lub cev yog feem ntau yog cov organic tsawg heev, xws li hydrofluorocarbons (HFC) lossis Alkane (HC) sib txuas.
Txoj kev txhim kho ntawmUa Npuas Ncauj NpuasPib thaum xyoo 1950, dupont tuam txhab siv Trichlia-fluoromethan (CFC-11) Raws li CFC-11 tau siv dav nyob hauv teb polyurethane siv zog ua npuas dej. Raws li CFC-11 tau pov thawj rau kev puas tsuaj ozone txheej, Western European teb tsis siv CFC-11 hauv 2007. Tom qab ntawd, Tebchaws Asmeskas hloov kho HCFC-141B xyoo 2003 thiab 2004, feem tau. Raws li kev paub txog ib puag ncig nce, lub teb chaws tab tom pib txhim kho thiab siv lwm txoj kev uas muaj peev xwm sov sov uas sov siab (GWP).
HFC hom cov neeg sawv cev ua npuas ncauj tau tshwm sim rau CFC-111B, tab sis tus nqi GWP tseem muaj kev tiv thaiv ib puag ncig. Yog li ntawd, nyob rau hauv xyoo tsis ntev los no, kev txhim kho tsom cov chaw ua haujlwm hauv kev ua haujlwm tau hloov pauv mus rau cov kev xaiv GWP.
Pros thiab cons ntawm cov neeg ua npuas ncauj
Ua ib hom rwb thaiv tsev rwb thaiv tsev, polyurethane rigid npuas muaj ntau yam zoo nqus tau kev ua tau zoo, lub neej ruaj khov lub neej thiab lwm yam.
Raws li ib qho tseem ceeb ntawm kev npaj tseem ceeb hauv kev npaj ntawm polyaming tus neeg sawv cev muaj qhov cuam tshuam tseem ceeb rau kev tiv thaiv, kev tiv thaiv ib puag ncig ntawm cov ntaub ntawv thermal. Qhov zoo ntawm cov neeg sawv cev tshuaj lom neeg yog cov ua npuas ncauj nrawm, tuaj yeem siv cov khoom siv hluav taws xob siab, yog li los npaj cov ua npuas ncauj siab polyurethane rigid ua npuas ncauj.
Txawm li cas los xij, cov neeg ua haujlwm lim dej ua npuas ncauj tuaj yeem tsim cov teeb meem phom sij, roj carbon dioxide, carbon monoxide thiab nitrogen oxides, ua rau ib puag ncig rau ib puag ncig. Qhov zoo dua ntawm tus neeg saib xyuas lub cev yog tias nws tsis tsim cov roj teeb, muaj qhov cuam tshuam me ntsis rau ib puag ncig, thiab tseem tuaj yeem tau txais npuas me me thiab muaj kev ua npuas zoo dua. Txawm li cas los xij, cov neeg ua npuas ncauj ua npuas ncauj muaj cov ua npuas ncauj qeeb thiab xav tau ntau dua thiab cov av noo kom ua tau zoo tshaj plaws.
Ua ib hom rwb thaiv tsev rwb thaiv tsev, polyurethane rigid npuas muaj ntau yam zoo nqus tau kev ua tau zoo, lub neej ruaj khov lub neej thiab lwm yam.
Raws li ib tug tseem ceeb ua ib qho tseem ceeb hauv kev npaj ntawmPolyurethane Nyuaj Ua Npuas Ncauj, Foaming tus neeg sawv cev muaj qhov cuam tshuam tseem ceeb rau kev ua tau zoo, kev tiv thaiv ib puag ncig ntawm cov ntaub ntawv thermal rwb thaiv tsev. Qhov zoo ntawm cov neeg sawv cev tshuaj lom neeg yog cov ua npuas ncauj nrawm, tuaj yeem siv cov khoom siv hluav taws xob siab, yog li los npaj cov ua npuas ncauj siab polyurethane rigid ua npuas ncauj.
Txawm li cas los xij, cov neeg ua haujlwm lim dej ua npuas ncauj tuaj yeem tsim cov teeb meem phom sij, roj carbon dioxide, carbon monoxide thiab nitrogen oxides, ua rau ib puag ncig rau ib puag ncig. Qhov zoo dua ntawm tus neeg saib xyuas lub cev yog tias nws tsis tsim cov roj teeb, muaj qhov cuam tshuam me ntsis rau ib puag ncig, thiab tseem tuaj yeem tau txais npuas me me thiab muaj kev ua npuas zoo dua. Txawm li cas los xij, cov neeg ua npuas ncauj ua npuas ncauj muaj cov ua npuas ncauj qeeb thiab xav tau ntau dua thiab cov av noo kom ua tau zoo tshaj plaws.
Yav Tom Ntej Kev Loj Hlob Hloov
Cov qauv ntawm cov foaming cov neeg sawv cev hauv kev lag luam kev lag luam yav tom ntej yog tsuas yog rau kev txhim kho ntawm cov khoom plig qis. Piv txwv li, CO2, HFO, thiab cov khoom xaiv dej, uas muaj qis GWP, xoom OPP, thiab lwm txoj kev ua haujlwm ib puag ncig, tau siv dav hauv kev ua npuas ncauj hauv kev ua npuas ncauj. Ib qho ntxiv, raws li lub tsev rwb thaiv tsev khoom siv teagation tech txuas ntxiv ua tau zoo dua, xws li roaming zoo dua, thiab npuas me dua npuas loj dua.
Nyob rau hauv xyoo tsis ntev los no, domestic organoflubline tshuaj lom neeg tau nquag nrhiav thiab yog lub fluorinated tus neeg sawv cev, uas yog cov roj fluorinated lub cev thiab yog cov txiaj ntsig zoo nkauj nrog cov txiaj ntsig hluav taws xob thiab cov txiaj ntsig ib puag ncig.
Lub Sijhawm Post: Jun-21-2024