A polymer yawanci a cikin wani anoxic jihar karkashin extrusion aiki yanayi, da kuma tsarin ya ƙunshi babban adadin carbon radicals maimakon alkoxy radicals da hydroxyl radicals.Don haka, madaidaicin daidaitawar sarrafawa yakamata ya sami damar kama radicals free carbon yadda ya kamata.The hydroxylamine antioxidant da aka ambata a sama wani nau'i ne na carbon radical wakili na tarko.
Babban jami'an tarko na carbon-free radical a kasuwa sune hydroxylamine, bisphenol mono-acrylate, ortho acrylyl maye gurbin phenol da benzofuranone da dama.
Bisphenol monoacrylate antioxidants:
A cikin kwayoyin bisphenol monoacrylate, ƙungiyar acrylyl ta kama carbon radical, kuma radicals na enol da aka haifar za a iya jujjuya su zuwa radicals phenolic oxygen radicals ta ƙungiyar aikin hydroxyl a cikin kwaya ɗaya.An san wannan tasirin a matsayin tsarin daidaitawa na bifunctional.Wannan yana ba da bisphenol monoacrylate mai ƙarfi mai ƙarfi ikon kama tarko.Tsayawansa yana da ƙarfi ko da a yanayin zafi.Kamfanoni a Japan da Turai sun ƙaddamar da irin waɗannan samfuran.A halin yanzu, Sumilizer GM ta Sumitomo Chemical, IRGANOX 3052 ta BASF, da AO3352/AO3353 galibi ana amfani dasu a kasuwa.
| KYAUTA | Saukewa: AO3352 | AO3353 |
| LAMBAR CAS | 61167-58-6 | 123968-25-2 |
| BAYYANA | FARAR FURA | FARAR KRISTI |
| ASSAY(%) | 99.00 MIN | 99.00 MIN |
| MATSALAR NArkewa(℃) | 130.00 MIN | 115.00 MIN |
| VOLATILES(%) | 0.30 MAX | 0.50 MAX |
| ASH(%) | 0.10 MAX | 0.10 MAX |
| APPLICATION | Ana amfani da shi sosai a cikin PP, PE da sauran polyolefin, ABS, HIPS, EPDM, SBR da sauran elastomer. | An yi amfani da shi sosai a cikin adhesives, styrene thermoplastic elastomers, ABS, polystyrene da roba modified polyphenylethylene da sauran filayen.Yana iya kama alkyl radicals yadda ya kamata, kuma yana yin tasirin aiki tare da benzotriazole UV absorbers da HALS masu daidaita haske.A cikin manne elastomer, yana da kyakkyawan sakamako na synergistic tare da phenolic antioxidants da phosphite ester antioxidants. |