{"id":5406,"date":"2022-07-24T05:44:35","date_gmt":"2022-07-24T05:44:35","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5406"},"modified":"2022-07-24T06:00:32","modified_gmt":"2022-07-24T06:00:32","slug":"brief-description-of-the-role-of-antioxidants-in-plastics-and-their-selection-principles","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/de\/brief-description-of-the-role-of-antioxidants-in-plastics-and-their-selection-principles\/","title":{"rendered":"Kurze Beschreibung der Rolle von Antioxidantien in Kunststoffen und ihrer Auswahlgrunds\u00e4tze"},"content":{"rendered":"

Kurze Beschreibung der Rolle von Antioxidantien in Kunststoffen und ihrer Auswahlgrunds\u00e4tze<\/strong><\/h1>\n

Der Zusatz geeigneter Antioxidantien bei der Kunststoffverarbeitung kann den Alterungsprozess aufhalten oder verz\u00f6gern und so die Lebensdauer von Kunststoffprodukten verl\u00e4ngern. Die Auswahl der Antioxidantien sollte sich nach der Art des Kunststoffs, der Verarbeitungsanlage, den Prozessbedingungen, der Vielfalt der anderen Zusatzstoffe und der zugesetzten Menge, der Umgebung, in der das Produkt verwendet wird, und der Lebensdauer des Produkts richten. Bei der Auswahl von Antioxidantien f\u00fcr Kunststoffe sollten grunds\u00e4tzlich die folgenden Grunds\u00e4tze beachtet werden.<\/p>\n

I. Kompatibilit\u00e4t. Kunststoff-Polymer und Antioxidans-Kompatibilit\u00e4t ist oft schlecht, in der Regel bei hohen Temperaturen werden Antioxidans und Polymer-Schmelze kombiniert werden, wird Polymer-H\u00e4rtung mit Antioxidans-Molek\u00fcle in der Mitte der Polymer-Molek\u00fcle kompatibel sein. Innerhalb der Formulierung Dosierung Bereich, ist das Antioxidans bei der Verarbeitungstemperatur geschmolzen werden. Design-Formulierungen, die Wahl der festen Antioxidantien, Lichtstabilisatoren, der Schmelzpunkt oder Schmelzbereich der oberen Grenze, sollte nicht h\u00f6her sein als die Verarbeitungstemperatur von Kunststoff-Polymeren.<\/p>\n

Zweitens, Migration. Kunststoff-Produkte, vor allem die Oberfl\u00e4che und Volumen-Verh\u00e4ltnis (oder Masse-Verh\u00e4ltnis) der kleineren Wert des Produkts, Oxidation tritt vor allem auf der Oberfl\u00e4che des Produkts, die eine kontinuierliche Migration von Antioxidantien aus dem Kunststoff-Produkte auf der Oberfl\u00e4che des Produkts und eine Rolle spielen. Allerdings, wenn die Migrationsrate auf die Oberfl\u00e4che des Produkts ist zu schnell, die Migration Menge zu gro\u00df ist, sollte das Antioxidans fl\u00fcchtig sein, um die Oberfl\u00e4che des Produkts in der Umwelt, oder Diffusionsmittel und Produktoberfl\u00e4che Kontakt mit anderen Medien und Verlust, ist dieser Verlust in der Tat unvermeidlich, Design-Formulierungen zu ber\u00fccksichtigen. Wenn es eine Auswahl von Antioxidantien Sorten, sollte eine relativ gro\u00dfe Molekulargewicht, Schmelzpunkt geeignete hohe Arten zu w\u00e4hlen, und zu den schwersten Einsatz der Umwelt, um die Menge an Antioxidantien verwenden zu bestimmen.<\/p>\n

Drittens, Stabilit\u00e4t. Anti-Oxidationsmittel in Kunststoffen sollte stabil bleiben, bei der Verwendung von Umwelt-und Hochtemperatur-Verarbeitung fl\u00fcchtigen Verlust, keine Verf\u00e4rbung oder Farbe, nicht Zersetzung (zus\u00e4tzlich zu der Rolle von Antioxidantien f\u00fcr die Verarbeitung von W\u00e4rme-Stabilisierung), nicht mit anderen Zusatzstoffen nachteilige chemische Reaktionen, nicht korrosive Maschinen und Anlagen, nicht leicht durch andere Stoffe auf der Oberfl\u00e4che des Produkts extrahiert.<\/p>\n

Viertens: Verarbeitbarkeit. Kunststoffprodukte Verarbeitung, Zugabe von Antioxidantien, um das Harz Viskosit\u00e4t und Schraube Drehmoment kann sich \u00e4ndern. Antioxidans und Harz schmelzen Bereich, wenn der Unterschied gro\u00df ist, wird Antioxidans Bias Flow oder Hemmung der Schraube Ph\u00e4nomen produzieren. Der Schmelzpunkt des Antioxidans ist niedriger als die Verarbeitungstemperatur von 100 \u2103 oder mehr, sollte das Antioxidans zun\u00e4chst in eine bestimmte Master-Charge gemacht werden, und dann mit Harzverarbeitung Produkte gemischt, um eine ungleichm\u00e4\u00dfige Verteilung des Antioxidans in das Produkt aufgrund von Bias Flow und Verarbeitung Ausbeute R\u00fcckgang zu vermeiden.<\/p>\n

F\u00fcnftens, die Umwelt und die Gesundheit. Antioxidans sollte ungiftig oder geringe Toxizit\u00e4t, kein Staub oder wenig Staub, keine sch\u00e4dlichen Auswirkungen auf den menschlichen K\u00f6rper in der Verarbeitung und Verwendung von Kunststoff-Produkten, keinen Schaden f\u00fcr Tiere und Pflanzen, keine Verschmutzung von Luft, Boden und Wasser-System.<\/p>\n

 <\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Kurze Beschreibung der Rolle von Antioxidantien in Kunststoffen und ihrer Auswahlgrunds\u00e4tze Der Zusatz geeigneter Antioxidantien bei der Kunststoffverarbeitung kann den Alterungsprozess aufhalten oder verz\u00f6gern und so die Lebensdauer von Kunststoffprodukten verl\u00e4ngern. Die Auswahl der Antioxidantien sollte sich nach der Art des Kunststoffs, der Verarbeitungsanlage, den Prozessbedingungen, der Vielfalt der [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5406","post","type-post","status-publish","format-standard","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"\nBrief description of the role of antioxidants in plastics and their selection principles - Longchang Chemical<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangchemical.com\/de\/brief-description-of-the-role-of-antioxidants-in-plastics-and-their-selection-principles\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Brief description of the role of antioxidants in plastics and their selection principles - Longchang Chemical\" \/>\n<meta property=\"og:description\" content=\"Brief description of the role of antioxidants in plastics and their selection principles The addition of suitable antioxidants in plastic processing can stop or delay the ageing process, thus extending the service life of plastic products. 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