{"id":5376,"date":"2022-07-14T01:12:43","date_gmt":"2022-07-14T01:12:43","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5376"},"modified":"2026-04-28T10:42:04","modified_gmt":"2026-04-28T10:42:04","slug":"epoxy-resin-curing-agent-and-its-curing-mechanism","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/epoxy-resin-curing-agent-and-its-curing-mechanism\/","title":{"rendered":"Types courants d'agents de durcissement de la r\u00e9sine \u00e9poxy et leur m\u00e9canisme de durcissement"},"content":{"rendered":"<h1><strong>Types courants d'agents de durcissement de la r\u00e9sine \u00e9poxy et leur m\u00e9canisme de durcissement<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>Quick answer:<\/strong> A strong printing-ink formulation is usually the one that keeps process stability and final print quality in balance, rather than over-optimizing only one part of the press behavior.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>Cet article r\u00e9sume bri\u00e8vement les types courants d'agents de polym\u00e9risation des r\u00e9sines \u00e9poxy et leur m\u00e9canisme de polym\u00e9risation.<\/p>\n<p>1, agent de durcissement de classe alcaline WTF. y compris diamine aliphatique et polyamine, polyamine aromatique, autres compos\u00e9s azot\u00e9s et amine aliphatique modifi\u00e9e. L'effet de durcissement des amines primaires et secondaires sur la r\u00e9sine \u00e9poxy est d'ouvrir le groupe \u00e9poxy par l'hydrog\u00e8ne actif sur l'atome d'azote, et d'obtenir un durcissement r\u00e9ticul\u00e9. Les polyamines aliphatiques telles que l'\u00e9thyl\u00e8nediamine, l'hexanediamine, la di\u00e9thyl\u00e8netriamine, la tri\u00e9thyl\u00e8net\u00e9tramine, la di\u00e9thylaminopropylamine, etc. sont plus actives et peuvent rendre la r\u00e9sine \u00e9poxy r\u00e9ticul\u00e9e et durcie \u00e0 temp\u00e9rature ambiante ; tandis que les polyamines aromatiques sont moins actives, telles que la m-ph\u00e9nyl\u00e8nediamine, qui peut \u00eatre durcie \u00e0 150\u2103.<\/p>\n<p>2\u3001Agent de durcissement de type acide. Y compris les acides organiques, l'anhydride acide, le trifluorure de bore et ses complexes. L'acide dibasique et son anhydride, tels que l'anhydride mal\u00e9ique et l'anhydride phtalique, peuvent durcir la r\u00e9sine \u00e9poxy, mais doivent \u00eatre cuits \u00e0 une temp\u00e9rature plus \u00e9lev\u00e9e pour durcir compl\u00e8tement. L'anhydride r\u00e9agit d'abord avec le groupe hydroxyle de la r\u00e9sine \u00e9poxy pour g\u00e9n\u00e9rer un monoester, et le groupe carboxyle du monoester et le groupe \u00e9poxy subissent une addition et une est\u00e9rification pour former un ester double.<\/p>\n<p>3\u3001Agent de durcissement additif pour le moulage. Ce type d'agent de durcissement et de r\u00e9action d'addition d'\u00e9poxy constitue une partie du segment de cha\u00eene du produit de durcissement, et par la r\u00e9action de polym\u00e9risation graduelle de sorte que les mol\u00e9cules lin\u00e9aires se r\u00e9ticulent en mol\u00e9cules de structure corporelle, ce type d'agent de durcissement est \u00e9galement connu sous le nom d'agent de durcissement de type melon.<\/p>\n<p>4\u3001Agent de durcissement catalytique. Ce type d'agent de durcissement n'agit que sur l'initiation de la r\u00e9sine \u00e9poxy, ouvre le groupe \u00e9poxy, la r\u00e9sine \u00e9poxy catalytique elle-m\u00eame polym\u00e9rise en une structure de r\u00e9seau, la g\u00e9n\u00e9ration de liaisons \u00e9ther comme structure principale de l'homopolym\u00e8re.<\/p>\n<p>5. Le type d'agent de durcissement pour l'utilisation g\u00e9n\u00e9rale de l'agent de durcissement peut \u00eatre divis\u00e9 en deux cat\u00e9gories : la polym\u00e9risation par addition et la polym\u00e9risation catalytique. Le type de polym\u00e9risation par addition qui ouvre le cycle du groupe \u00e9poxy pour la r\u00e9action de polym\u00e9risation par addition, l'agent de durcissement lui-m\u00eame participe \u00e0 la structure du r\u00e9seau tridimensionnel. Ce type d'agent de durcissement, s'il est ajout\u00e9 en trop petite quantit\u00e9, le produit de durcissement est connect\u00e9 au groupe \u00e9poxy \u00e0 la fin de la r\u00e9action. Par cons\u00e9quent, pour ce type d'agent de durcissement, il existe une quantit\u00e9 appropri\u00e9e ; et l'agent de durcissement catalytique est un moyen cationique ou anionique de polym\u00e9risation par addition d'anneaux du groupe \u00e9poxy, l'agent de durcissement ne participe pas \u00e0 la structure du r\u00e9seau, de sorte qu'il n'y a pas de r\u00e9action \u00e9quivalente de la quantit\u00e9 appropri\u00e9e. Toutefois, l'augmentation du dosage acc\u00e9l\u00e8re la vitesse de polym\u00e9risation. Dans l'agent de durcissement de type apparent, le dicyandiamide, le dihydrazide d'acide adipique, de telles vari\u00e9t\u00e9s, \u00e0 temp\u00e9rature ambiante ne sont pas dissous dans la r\u00e9sine \u00e9poxyde, et \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es apr\u00e8s dissolution, la r\u00e9action de durcissement a commenc\u00e9, et pr\u00e9sente donc \u00e9galement un \u00e9tat latent, de sorte qu'il peut \u00eatre appel\u00e9 un agent de durcissement latent fonctionnel.<\/p>\n<p>6, l'agent de durcissement latent fait r\u00e9f\u00e9rence \u00e0 la r\u00e9sine \u00e9poxy m\u00e9lang\u00e9e \u00e0 la stabilit\u00e9 \u00e0 relativement long terme \u00e0 temp\u00e9rature ambiante. Il faut g\u00e9n\u00e9ralement plus de trois mois pour obtenir une valeur pratique plus importante, l'id\u00e9al \u00e9tant une demi-ann\u00e9e ou plus d'un an. Il suffit d'exposer le produit \u00e0 la chaleur, \u00e0 la lumi\u00e8re, \u00e0 l'humidit\u00e9 et \u00e0 d'autres conditions pour qu'il commence \u00e0 durcir. Ce type d'agent de durcissement est essentiellement une m\u00e9thode physique et chimique pour fermer l'activit\u00e9 de l'agent de durcissement, ces vari\u00e9t\u00e9s sont appel\u00e9es agent de durcissement latent, en fait, peuvent \u00eatre appel\u00e9es agent de durcissement latent fonctionnel. Le dicyandiamide et la r\u00e9sine \u00e9poxy m\u00e9lang\u00e9s ensemble sont stables \u00e0 temp\u00e9rature ambiante. \u00c0 145-165 \u2103, la r\u00e9sine \u00e9poxy peut \u00eatre durcie en 30 minutes ; le complexe bore-triazide-\u00e9thylamine est \u00e9galement stable \u00e0 temp\u00e9rature ambiante, au-dessus de 100 \u2103, la r\u00e9sine \u00e9poxy peut \u00eatre durcie.<\/p>\n<p>L'agent de durcissement latent peut \u00eatre m\u00e9lang\u00e9 \u00e0 la r\u00e9sine \u00e9poxy pour former un compos\u00e9 de type liquide, ce qui simplifie l'application des produits \u00e0 base de r\u00e9sine \u00e9poxy. Son champ d'application s'\u00e9tend de l'adh\u00e9sif \u00e0 emballage unique aux rev\u00eatements, \u00e0 la peinture d'impr\u00e9gnation, aux compos\u00e9s d'enrobage, aux rev\u00eatements en poudre et \u00e0 d'autres aspects du d\u00e9veloppement.<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>How technical buyers usually evaluate printing-ink issues<\/h2>\n<p>Ink performance problems are often multi-variable problems. Teams generally move faster when they screen transfer, flow, drying or curing, and substrate hold together instead of changing one raw material at a time without a clear decision frame.<\/p>\n<ul>\n<li><strong>Define the real process bottleneck:<\/strong> poor transfer, drying problems, skinning, and color instability often need different corrective routes.<\/li>\n<li><strong>Check viscosity inside the print process:<\/strong> an ink that looks fine in the container can behave very differently on the machine.<\/li>\n<li><strong>Review substrate compatibility:<\/strong> paper, film, metalized surfaces, and laminates often require different balance points.<\/li>\n<li><strong>Use post-print checks as part of selection:<\/strong> scratch resistance, tape adhesion, lamination behavior, and storage stability are usually as important as the fresh-print appearance.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-094\/\">CHLUMIAF 094<\/a>:<\/strong> A balanced defoamer reference for waterborne coatings and many general foam-control screens.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-3037\/\">CHLUMIAF 3037<\/a>:<\/strong> A stronger process-defoaming option when persistent foam survives harsher conditions.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3280\/\">CHLUMIWE 3280<\/a>:<\/strong> A strong wetting-agent reference for inks, coatings, and difficult substrate wetting.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3071-organic-silicone-surfactant-organosilicone-wetting-agent\/\">CHLUMIWE 3071<\/a>:<\/strong> Useful when organosilicone wetting support is needed in a broad application screen.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why do many ink problems require more than one formulation change?<\/strong><br \/>Because flow, transfer, drying, adhesion, and appearance interact, so improving one of them can sometimes worsen another if the full system is not reviewed together.<\/p>\n<p><strong>Should rheology be judged only by a single viscosity number?<\/strong><br \/>Not usually. Printability also depends on transfer behavior, temperature, shear history, and how the ink behaves on the actual press.<\/p>\n<p><!-- lc-commercial-end --><\/p>","protected":false},"excerpt":{"rendered":"<p>This article briefly summarizes the common types of epoxy resin curing agent and its curing mechanism. 1, alkaline class curing agent WTF. including aliphatic diamine and polyamine, aromatic polyamine, other<\/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-5376","post","type-post","status-publish","format-standard","hentry","category-catalysts-chemical-auxiliary-agents"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Common types of epoxy resin curing agent and its curing mechanism - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"This article briefly summarizes the common types of epoxy resin curing agent and its curing mechanism. 1, alkaline class curing agent WTF. including ali...\" \/>\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\/fr\/epoxy-resin-curing-agent-and-its-curing-mechanism\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Common types of epoxy resin curing agent and its curing mechanism - 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