Cov pab pawg tertols nrog tert-butyl (x = methyl (r = methyl (r = methyl (r = metyl) Txoj kev teeb tsa tshiab ntawm cov pherols pherols antioxidant yog hu ua asymmetric hindered phenols antioxidant.
Ib asymmetric hinder phenolic qauv nrog tert-butyl pab pawg thiab ib pab pawg methho-txoj hauj lwm txaus los tiv thaiv nws tus kheej. Lub asymmetric hinder phenolic antioxidant, nrog 2 methyl - 6 - metyl phenolanidants, tab sis kuj tseem ua haujlwm nrog cov antioxidiary ruaj khov thiab ua rau muaj cov nyhuv sauv. Yog li nws muaj ntau pom tseeb tshaj li cov ib txwm symmetrical hom kev sib txuas lus tabkaumed phenol, thiab haum rau cov ntawv thov thermal oxidation.
A245, AN1790 (ntxiv rau A2777) thiab Ao80 yog peb feem ntau cov awols antioxidan, ntawm An245 yog qhov feem ntau siv nrog tus nqi tsawg.
Ib 245 yog tshwj xeeb tshaj yog tsim nyog rau kev ua tw phenolic antioxidants ntawm cov organic polymers. Ua ib qho antioxidant, nws yog siv nyob rau hauv kev ua thiab ntev-lub sij hawm kev txhim kho ntawm styresic kev txhim kho ntawm Styrene Polymers xws li pom thiab PA thiab Polyurethane. Nws tseem yog ib txoj saw hlau zoo hauv PVC polymerization txheej txheem. Cov khoom no tsis muaj qhov cuam tshuam ntawm cov tshuaj tiv thaiv polymer, siv rau kev cuam tshuam ntau polystyrene, tuaj yeem ntxiv rau Monomer ua ntej polymerization.
Ntxiv nrog rau cov khoom siv muab cov hmoov zoo li qub, peb tuaj yeem muab 35% cov ntsiab lus ntawm dispersion-AN245DW. Tom qab ntau xyoo ntawm kev tsim khoom, lub tuam txhab dispersion tsim thiab yooj yim rau kev tawg, uas yog cov tshuaj tiv thaiv tseem ceeb siv hauv PVC polymerization txheej txheem.
Koj ib txwm zoo siab tos txais hu rau peb txog cov lus nug!
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Lub sijhawm Post: Sep-13-2021