{"id":8639,"date":"2025-05-16T06:54:57","date_gmt":"2025-05-16T06:54:57","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=8639"},"modified":"2026-04-27T11:18:16","modified_gmt":"2026-04-27T11:18:16","slug":"antioxidants-used-in-polymers","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/nl\/antioxidants-used-in-polymers\/","title":{"rendered":"Antioxidanten gebruikt in polymeren"},"content":{"rendered":"

(1) Fenolische antioxidanten
\nPhenolic antioxidants are the most widely used and most abundant antioxidants in polymer materials. The phenolic hydroxyl group in phenolic antioxidants can release active hydrogen to capture the \u2018key offender\u2019 free radicals in polymer degradation. Natural products such as VE, tea polyphenols, and low molecular compounds such as 2,6-di-tert-butylphenol (BHT) are phenolic antioxidants. Hindered phenolic antioxidants are a class of compounds with substituents on one or both sides of the hydroxyl group (-OH) on the benzene ring. Because the hydroxyl group is spatially hindered, the H atom is easily dislodged from the molecule with peroxyl radicals (ROO .) , alkoxyl radicals (RO.), hydroxyl radicals (.OH), etc. to combine to make them inactive, thus terminating the chain reaction of thermo-oxidative aging. Hindered phenolic antioxidants are non-polluting products and are suitable for colourless or light-coloured products. Moreover, hindered phenolic antioxidants have large molecular weight, good compatibility with polymer materials and low toxicity, so the consumption ratio of high molecular weight hindered phenolic varieties represented by 1010<\/a> and 1076 increases year by year, while 1010 becomes the most excellent product among polymer antioxidants with high molecular weight, good compatibility with polymer materials, excellent antioxidant effect, good safety, and the largest consumption.
\n(2) Fosfiet antioxidanten
\nDe belangrijkste rol van fosfietantioxidanten is het verwijderen van hydroperoxiden, niet alleen polymeerdegradatie zal hydroperoxiden produceren, en de belangrijkste antioxidant om de toevoeging van hydroperoxiden tegelijkertijd te remmen zal ook hydroperoxiden produceren. Daarom zijn fosfietantioxidanten als hulpantioxidant niet erg effectief als ze alleen worden gebruikt, maar hebben ze een significant effect als ze samen met de hoofdantioxidant worden gebruikt. Fosfiet antioxidant representatief product 168 is de binnenlandse productie en consumptie van antioxidant vari\u00ebteiten tweede alleen naar 1010. 626 en 618 worden voornamelijk gebruikt voor hoge temperatuur verwerking van polymeermaterialen of producten rond 300 \u2103, de rol van de polymeermaterialen om effectief de weerstand tegen thermische oxidatie bij hoge temperatuur te verbeteren, met behoud van het goede uiterlijk van polymeerproducten.
\n(3) Zwavel antioxidanten
\nZwavel antioxidanten en fosfor antioxidanten vergelijkbaar met de rol van de belangrijkste rol is het verwijderen van hydroperoxiden, maar ook als een hulp antioxidant. De binnenlandse productie van zwavelhoudende antioxidanten volgens de moleculaire structuur kan worden onderverdeeld in zwavelester antioxidanten, zwavelbisfenol antioxidanten en zwavelether fenolische antioxidanten 3 vari\u00ebteiten. Thiobisphenol antioxidant molecuul bevat gehinderd fenol structuur, in het polymeer materialen tonen hoge zuurstofbestendigheid, hittebestendigheid, meestal thiobisphenol antioxidant is onderverdeeld in het belangrijkste type van gehinderd fenol antioxidant.
\n(4) Metaalion passivator
\nMetaalion-passivatoren bevatten hydrazide, oxime en aldehyde-amine condensaat en andere co\u00f6rdinatiegroepen, complexatie van metaalionen. Het meest representatieve product is 1024, dat een verbinding van het dihydrazidetype is en ook een gecombineerde gehinderde fenolfunctionele groep bevat, die het product zowel koperbestendigheid als weerstand tegen hitte en zuurstofveroudering geeft.
\n(5) Aromatische amine antioxidanten
\nAromatische amine antioxidanten worden gegenereerd door de condensatie van aminofenol of hydrochinon met aniline, dit type product is donkerder van kleur, is een vervuilende antioxidant, en de meeste van de producten hebben een zekere mate van toxiciteit, een groot aantal van rubber producten, andere polymeer materialen, het gebruik van minder, en dit type antioxidant is ook bekend als antioxidant.<\/p>\n

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(1) Phenolic antioxidants Phenolic antioxidants are the most widely used and most abundant antioxidants in polymer materials. The phenolic hydroxyl group in phenolic antioxidants can release active hydrogen to capture the \u2018key offender\u2019 free…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152],"tags":[],"class_list":["post-8639","post","type-post","status-publish","format-standard","hentry","category-antioxidant"],"yoast_head":"\nAntioxidants used in polymers - Changhong Chemical<\/title>\n<meta name=\"description\" content=\"(1) Phenolic antioxidants Phenolic antioxidants are the most widely used and most abundant antioxidants in polymer materials. 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