Oxygen Scaveners: Cov Ntsiab Cai
Tso lus
Oxygen scavengers ua haujlwm feem ntau los ntawm kev siv cov pa oxygen hauv ib puag ncig los ntawm kev siv tshuaj lom neeg los tiv thaiv oxidation thiab deterioration ntawm cov khoom. Lawv cov txheej txheem tseem ceeb tuaj yeem muab faib ua ob pawg:
Hlau-raws li oxygen scavengers: Cov no feem ntau muaj cov hmoov hlau thiab tau txais cov tshuaj tiv thaiv redox nrog oxygen thiab dej hauv qhov chaw ntub dej. Hlau atoms plam electrons los tsim ferrous ions (Fe²⁺), uas ntxiv cov pa oxygen thiab dej los tsim ferric hydroxide (Fe (OH) ₃) thiab lwm yam khoom. Cov txheej txheem no txuas ntxiv siv cov pa oxygen, txo cov pa oxygen hauv ib puag ncig. Cov ntawv thov xws li ntim khoom noj, tshuaj khaws cia, thiab tiv thaiv xeb rau cov khoom siv hlau.
Sulfite-raws li oxygen scavengers: Cov no txo cov pa oxygen rau hauv dej lossis lwm yam khoom tsis zoo los ntawm cov tshuaj tiv thaiv redox, thaum raug oxidized rau sulfates. Piv txwv li, sodium dithionite (Na₂S₂O₄) decomposes nyob rau hauv acidic tej yam kev mob, tso active tshuaj uas ua ke nrog oxygen los tsim sodium sulfate (Na₂SO₄). Cov pa oxygen scavengers no tsim nyog rau lub sijhawm ntev - khaws cov khoom ua kua, cov khoom siv hluav taws xob, thiab cov cuab yeej precision.
Technical Principles: Cov tshuaj tiv thaiv kev tshem tawm cov pa oxygen yuav tsum muaj cov xwm txheej tshwj xeeb, xws li kub, av noo, thiab pH tus nqi. Hlau -raws li oxygen scavengers yuav tsum muaj cov av noo ntawm qhov loj dua lossis sib npaug li 60%, nrog rau cov tshuaj tiv thaiv nce ntxiv thaum cov av noo nce. Sulfite-raws li oxygen scavengers yuav tsum tau tswj pH qib hauv cov tshuaj tiv thaiv kom tsis txhob muaj kev phiv.
Kev lag luam Standard: Raws li GB/T 30799-2014 "Food-qib Oxygen Desiccant", cov pa oxygen scavengers yuav tsum txo cov pa oxygen hauv cov ntim ntim kom qis dua 0.5% hauv 24 teev, thiab cov khoom seem yuav tsum tau ua raws li cov qauv kev nyab xeeb khoom noj. Kev lag luam-qib oxygen scavengers yuav tsum tau ua raws li ISO 8573-1 cov kev cai rau compressed cua zoo los tiv thaiv cov kav xa dej corrosion.
Kev ceev faj: Tsis txhob sib xyaw nrog cov oxidants muaj zog tiv thaiv kev tawm tsam; khaws cia rau hauv qhov chaw qhuav kom tsis txhob muaj kev puas tsuaj ntxov ntxov; ib ntus sim ua kom muaj peev xwm tshem tawm cov pa oxygen ntxiv kom ntseeg tau tias muaj kev tiv thaiv zoo.
