Oxygen absorbents, raws li cov khoom siv tshuaj uas tuaj yeem tswj tau cov pa oxygen hauv ib puag ncig zoo, ua lub luag haujlwm tseem ceeb hauv kev khaws zaub mov, khaws tshuaj, kev tiv thaiv hluav taws xob, thiab kev txuag kev coj noj coj ua. Hauv kev siv tswv yim, lawv cov txiaj ntsig tsis yog nyob ntawm cov khoom siv hauv lub cev xwb tab sis kuj nyob ntawm qhov chaw siv, kev ua haujlwm, thiab kev cia khoom. Raws li kev xyaum ua tau ntau xyoo, tsab xov xwm no qhia txog kev xaiv, siv, thiab kev ceev faj rau cov pa oxygen absorbents, aiming muab cov ntaub ntawv siv rau lwm yam.
Hom thiab yam ntxwv ntawm Oxygen Absorbents
Tam sim no, cov pa oxygen absorbents hauv khw feem ntau suav nrog peb pawg: hlau-raws li, organic, thiab photosensitive. Hlau -raws li absorbents (xws li cov hmoov hlau txo) siv cov pa oxygen los ntawm cov tshuaj tiv thaiv oxidation, uas muaj cov nqi qis thiab kev nqus dej siab, tsim nyog rau feem ntau qhov chaw kub thiab txias, tab sis nws yuav ua rau tsis ua hauj lwm nyob rau hauv high humidity. Organic absorbents (xws li ascorbic acid derivatives) muaj cov tshuaj tiv thaiv me me, haum rau cov khoom rhiab rau hlau, tab sis muaj peev xwm nqus tau tsawg. Photosensitive absorbents cia siab rau lub teeb kom ua rau cov tshuaj tiv thaiv thiab feem ntau yog siv rau hauv cov xwm txheej tshwj xeeb, xws li cov khoom siv hauv tsev cia puav pheej.
Ntau hom absorbents muaj qhov sib txawv tseem ceeb hauv kev nqus pa oxygen, lub sijhawm ua haujlwm tau zoo, thiab qhov ntsuas kub siv tau. Piv txwv li, hlau -raws li absorbents, nyob rau hauv tej yam kev mob ntawm 25℃thiab 60% txheeb ze av noo, feem ntau yuav txo tau cov pa oxygen concentration nyob rau hauv ib qho chaw kaw kom qis dua 0.1% nyob rau hauv 24-72 teev, thaum organic absorbents yuav siv sij hawm ntev dua. Yog li, kev xaiv yuav tsum tau ua raws li qhov sib npaug ntawm kev ua tau zoo thiab tus nqi raws li cov kev xav tau tshwj xeeb.
Cov kev paub tseem ceeb hauv kev siv tswv yim
1. Tsim kom muaj ib puag ncig kaw
Kev ua tau zoo ntawm cov pa oxygen absorbent yog nyob ntawm qhov kev ncaj ncees ntawm qhov chaw kaw. Hauv kev xyaum, nws tau pom tias txawm tias muaj cov khoom siv tau zoo heev, yog tias muaj cov xau me me hauv cov ntim khoom (xws li cov cua sov tsis zoo los yog cov khoom perforation), cov pa tawm sab nraud yuav tsis tu ncua nkag mus rau hauv, txo cov pa nqus pa. Yog li ntawd, nws raug pom zoo kom siv ntau- txheej ntim cov khoom sib xyaw thiab ntxiv txo cov pa oxygen pib los ntawm lub tshuab nqus tsev lossis nitrogen pretreatment.
2. Sib piv cov tshuaj rau qhov chaw
Qhov ntau npaum li cas ntawm absorbent yuav tsum raug xam raws li qhov ntim ntawm lub hom phiaj qhov chaw thiab qhov pib oxygen concentration. Kev paub qhia tau hais tias tso 3-5 grams ntawm hlau-raws li nqus tau ib 100 cubic centimeters ntawm qhov chaw tuaj yeem tswj cov pa oxygen kom qis dua 0.5% hauv 24 teev. Rau kev cia ntev ntev (piv txwv li, tshaj 6 lub hlis), nws raug nquahu kom nce cov paj los ntawm 10% -20% txhawm rau txhawm rau txo qis hauv kev nqus pa oxygen.
3. Environmental Factor Control
Qhov kub thiab av noo yog ob qhov sib txawv ntawm qhov tseem ceeb uas cuam tshuam rau kev ua haujlwm nqus dej. Cov kub kub (siab tshaj 40 degree) ua kom cov oxidation cov tshuaj tiv thaiv ntawm hlau -raws li absorbents tab sis kuj tseem ua rau lawv lub neej ntev; thaum cov av noo tshaj 80% yooj yim tsim ib txheej passivation ntawm hlau hmoov nto, txo reactivity. Qhov no tuaj yeem hais tau los ntawm kev ntxiv cov khoom siv desiccant (xws li silica gel) lossis muab daim npav qhia cov av noo hauv lub ntim rau qhov tiag - sijhawm saib xyuas.
Tej teeb meem thiab kev daws teeb meem
Hauv kev xyaum ntev -, cov teeb meem hauv qab no yog qhov tseem ceeb:
• Kev nqus pa tsis tiav: Qhov no feem ntau yog tshwm sim los ntawm kev ntim khoom tsis txaus los yog qhov nqus nqus tsis sib xws. Txoj kev daws teeb meem yog txhawm rau txhim kho cov qauv ntim khoom thiab xyuas kom muaj kev sib txawv ntawm cov khoom nqus.
• Kev pheej hmoo ntawm kev sib cuag tsis raug: Qee cov hlau- raws li cov khoom nqus tuaj yeem ua kom sov lossis plua plav thaum raug; Kev sib cuag ncaj qha nrog zaub mov lossis tshuaj yuav tsum zam. Nws raug nquahu kom muab khi rau hauv cov hnab uas tsis yog - woven los yog breathable membranes.
• Tus nqi -Kev Ua Tau Zoo: Txawm hais tias siab - cov khoom siv hluav taws xob tsis zoo tsis ua rau cov khoom ua qias tuaj, lawv cov nqi - feem ntau qis dua cov hlau - cov khoom siv. Kev xaiv yooj yim raws li qhov rhiab heev ntawm cov khoom tiv thaiv yog qhov tseem ceeb.
Cov Lus Qhia Txog Kev Txhim Kho Yav Tom Ntej
Nrog rau kev nce qib hauv cov ntaub ntawv tshawb fawb, cov pa oxygen tshiab tau tsim los ntawm kev ua tau zoo dua qub, kev phooj ywg ib puag ncig, thiab kev txawj ntse. Piv txwv li, nanoscale hlau oxide composites ho txhim kho cov pa nqus cov pa, thaum biodegradable absorbents zoo ua ke nrog ntsuab ntim tiam sis. Tsis tas li ntawd, cov tshuab ntim khoom ntse ua ke nrog cov pa oxygen sensors thiab cov khoom nqus tau tuaj yeem muab cov lus qhia tiag tiag - lub sijhawm tawm tswv yim ntawm cov pa oxygen nyob ib puag ncig, ntxiv dag zog rau daim ntawv thov raug.
Kev siv tau zoo ntawm cov pa oxygen absorbent yuav tsum muaj kev xav txog cov khoom siv, ib puag ncig, thiab kev xav tau tiag tiag. Kev xaiv kev tshawb fawb, kev ua haujlwm tau zoo, thiab kev soj ntsuam tas li tuaj yeem ua rau lawv qhov kev tiv thaiv zoo tshaj plaws. Nyob rau hauv lub neej yav tom ntej, nrog kev thev naus laus zis thev naus laus zis, cov pa oxygen absorbents yuav ua rau pom lawv cov nqi hloov tsis tau hauv ntau thaj chaw.
