Antioxidants a cikin robobi suna kula da lalatawar iskar oxygen a cikin tsarin masana'antu, sarrafawa, adanawa da aikace-aikacen mafi yawan robobi. Oxygen yana shiga cikin fina-finai na filastik kuma yana iya amsawa tare da yawancin polymers. Yana haifar da lalacewa ko haɗin kai, wanda ke canza kaddarorin kayan.
Tsarin iskar oxygenation na polymers shine nau'in sarkar nau'in radical na kyauta. Maganin antioxidants na filastik irin waɗannan abubuwa ne, waɗanda zasu iya kama radicals masu aiki, suna haifar da radicals marasa aiki, ko kuma suna iya lalata polymer hydroperoxides da aka samar yayin aikin iskar oxygen, ƙare sarkar amsawar, da jinkirta aikin polymer oxidation . . Sakamakon haka, ana iya sarrafa polymer ɗin lafiya kuma za a iya tsawaita rayuwar sabis.
Rabewa
Ana iya raba tsarin sinadaran filastik antioxidants zuwa:
⑴. Phenols, ciki har da: monophenol, bisphenol, triphenol, polyphenol, hydroquinone, thiobisphenol;
⑵. Amines, gami da: naphthylamine, diphenylamine, p{1}}phenylenediamine, abubuwan da suka samo asali na quinoline, ban da phosphites, thioesters da sauran nau'ikan.
1. Babban amfani
（1）. Ana amfani da antioxidants na filastik ko'ina, kuma ana iya amfani dashi azaman antioxidants kamar polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polyester (PC), polystyrene (PS), resin ABS, resin fiber, da sauransu{1}}
（2）. Filastik antioxidants iya yadda ya kamata hana tsufa lalacewa ta hanyar dalilai kamar haske, zafi da oxygen.
2. Fitattun fa'idodi
An yi amfani da antioxidants na filastik a cikin robobi, daga cikinsu akwai polyolefin da ABS sun fi amfani da su, sannan polyoxymethylene, polyvinyl chloride da nailan. A amfani, ya kamata a yi amfani da antioxidants biyu ko fiye tare, wanda zai iya haifar da fa'idodin ƙari ko tasirin haɗin gwiwa don samun fa'idodi mafi kyau.
(1) Tasirin ƙari: Lokacin da aka yi amfani da babban maganin antioxidant da maganin antioxidant tare, ana aiwatar da halayen su, kuma tasirin ya fi na yin amfani da ɗayan su kadai. Amfani da babban maganin antioxidant - zai haifar da illa. Lokacin da aka yi amfani da ƙananan ƙwayoyin cuta masu yawa -, ana iya guje wa illa kuma ana iya yin amfani da ƙarin fa'idodi.
(2) Halin haɗin kai: Lokacin da aka yi amfani da antioxidants tare da kyau kuma jimlar tasirin su ya wuce jimillar tasirin su kaɗai, ana ɗaukarsa azaman sakamako na haɗin gwiwa.
A ƙarshe, kwanciyar hankali na iskar oxygen na robobi daban-daban ya bambanta, don haka wasu robobi ba sa buƙatar ƙara antioxidants. Wasu dole ne su ƙara antioxidants. Matsayin maganin antioxidants na filastik shine ɗaukar radicals masu aiki da katse tsarin sarkar, don jinkirta aiwatar da iskar oxygen da saurin robobi. Dangane da tsarin aikin antioxidants, yana da tasiri ga duk robobi.
3. Yadda ake amfani da shi
Farin foda, adadin adadin shine 0.1-0.5%, kai tsaye ƙara antioxidant filastik a cikin masterbatch kuma ya watse gaba ɗaya.
