I-polymer ngokuqhelekileyo ikwimeko ye-anoxic phantsi kweemeko ze-extrusion processing, kwaye inkqubo iqulethe inani elikhulu le-carbon radicals kune-alkoxy radicals kunye ne-hydroxyl radicals.Ke ngoko, eyona nkqubo ifanelekileyo yokuzinza kufuneka ikwazi ukubamba iiradicals zasimahla zekhabhoni ngempumelelo.I-hydroxylamine antioxidant ekhankanywe ngasentla luhlobo lwe-carbon radical trapping agent.
Iiarhente eziphambili zokubambisa i-carbon free radical trapping kwimarike yihydroxylamine, bisphenol mono-acrylate, ortho acrylyl endaweni ye-phenol kunye ne-benzofuranone iindidi ezininzi.
I-Bisphenol monoacrylate antioxidants:
Kwiimolekyuli ze-bisphenol monoacrylate, i-carbon radical ibanjwe liqela le-acrylyl, kwaye i-enol radicals eveliswayo inokuguqulwa ibe yi-phenolic ezinzileyo ye-oxygen radicals ngeqela elisebenzayo le-hydroxyl kwi-molecule efanayo.Esi siphumo saziwa ngokuba yi-bifunctional stabilization mechanism.Oku kunika i-bisphenol monoacrylate amandla anamandla okubambisa ngokukhululekileyo.Ukuzinza kwayo kunamandla nakwiqondo lokushisa eliphezulu.Iinkampani zaseJapan naseYurophu ziye zasungula iimveliso ezinjalo.Okwangoku, i-Sumilizer GM yi-Sumitomo Chemical, i-IRGANOX 3052 yi-BASF, kunye ne-AO3352/AO3353 zisetyenziswa kakhulu kwiimarike.
| IMVELISO | AO3352 | AO3353 |
| INOMBOLO YECAS | 61167-58-6 | 123968-25-2 |
| INKCAZELO | UPOWU OMHLOPHE | UBUME LWEKHUMBUZO OMHLOPHE |
| UVAVANYO(%) | 99.00 MIN | 99.00 MIN |
| INDAWO ENGnyibilikayo(℃) | 130.00 MIN | 115.00 MIN |
| VOLATILES(%) | 0.30 MAX | 0.50 MAX |
| UTHUNZI(%) | 0.10 MAX | 0.10 MAX |
| ISICELO | Isetyenziswa kakhulu kwi-PP, PE kunye nezinye i-polyolefin, i-ABS, i-HIPS, i-EPDM, i-SBR kunye nezinye i-elastomers. | Isetyenziswa kakhulu kwi-adhesives, i-styrene thermoplastic elastomers, i-ABS, i-polystyrene kunye ne-rubber eguqulwe i-polyphenylethylene kunye nezinye iindawo.Inokuthi ibambe ngokufanelekileyo i-alkyl radicals, kwaye yenza i-synergistic effect kunye ne-benzotriazole i-Absorber ye-UV kunye ne-HALS stabilizers.Kwi-elastomer enamathelayo, inefuthe elihle le-synergistic kunye ne-phenolic antioxidants kunye ne-phosphite ester antioxidants. |