Lub polymer feem ntau yog nyob rau hauv lub xeev anoxic nyob rau hauv extrusion ua tej yam kev mob, thiab lub system muaj ib tug loj tus naj npawb ntawm cov pa roj carbon radicals es tsis yog alkoxy radicals thiab hydroxyl radicals.Yog li ntawd, lub zoo tagnrho ua stabilizer yuav tsum muaj peev xwm ntes carbon dawb radicals zoo.Hydroxylamine antioxidant hais los saum toj no yog ib hom carbon radical trapping agent.
Cov pa roj carbon monoxide tseem ceeb hauv kev ua lag luam yog hydroxylamine, bisphenol mono-acrylate, ortho acrylyl hloov phenol thiab benzofuranone ntau pawg.
Bisphenol monoacrylate antioxidants:
Nyob rau hauv bisphenol monoacrylate molecules, cov pa roj carbon radical yog ntes los ntawm pawg acrylyl, thiab cov enol radicals generated yuav hloov mus rau hauv ruaj khov phenolic oxygen radicals los ntawm hydroxyl functional pab pawg neeg nyob rau hauv tib molecule.Cov nyhuv no yog hu ua bifunctional stabilization mechanism.Qhov no muab bisphenol monoacrylate muaj zog heev dawb radical cuab muaj peev xwm.Nws stabilization muaj zog txawm nyob rau hauv high kub.Cov tuam txhab hauv Nyij Pooj thiab Tebchaws Europe tau tshaj tawm cov khoom zoo li no.Tam sim no, Sumilizer GM los ntawm Sumitomo Chemical, IRGANOX 3052 los ntawm BASF, thiab AO3352 / AO3353 feem ntau yog siv hauv khw.
| KHOOM | TIAB SA 3352 | TIAB SA 3353 |
| CAS NO | 61167-58-6 | 123968-25-2 |
| TSEEM CEEB | DAWB POWDER | DAWB CRYSTAL POWDER |
| ASSAY(%) | 99.00 Nws | 99.00 Nws |
| HLAU POINT (℃) | 130.00 Nws | 115.00 Nws |
| VOLATILES(%) | MAX 0.30 Nws | MAX 0.50 Nws |
| ASH (%) | 0.10 MAX | 0.10 MAX |
| APPLICATION | Siv dav hauv PP, PE thiab lwm yam polyolefin, ABS, HIPS, EPDM, SBR thiab lwm yam elastomers. | Siv dav hauv cov nplaum, styrene thermoplastic elastomers, ABS, polystyrene thiab roj hmab hloov polyphenylethylene thiab lwm yam.Nws tuaj yeem ntes cov alkyl radicals zoo, thiab ua kom muaj txiaj ntsig zoo nrog benzotriazole UV absorbers thiab HALS lub teeb stabilizers.Nyob rau hauv cov nplaum elastomer, nws muaj ib tug zoo synergistic nyhuv nrog phenolic antioxidants thiab phosphite ester antioxidants. |