{"id":5733,"date":"2022-11-14T13:59:17","date_gmt":"2022-11-14T13:59:17","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5733"},"modified":"2026-04-28T10:42:10","modified_gmt":"2026-04-28T10:42:10","slug":"solution-for-slow-curing-of-cationic-photoinitiators","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/solution-for-slow-curing-of-cationic-photoinitiators\/","title":{"rendered":"Quelle est la solution pour le durcissement lent des photo-initiateurs cationiques ?"},"content":{"rendered":"<h1><strong>Quelle est la solution pour le durcissement lent des photo-initiateurs cationiques ?<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>R\u00e9ponse rapide :<\/strong> Dans la plupart des syst\u00e8mes UV, les photoinitiateurs sont s\u00e9lectionn\u00e9s en \u00e9quilibrant la longueur d'onde, la polym\u00e9risation en profondeur, le contr\u00f4le de la couleur et la vitesse de ligne. Les acheteurs comparent g\u00e9n\u00e9ralement un m\u00e9lange plut\u00f4t qu'un produit isol\u00e9.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>Les syst\u00e8mes de photopolym\u00e9risation cationique pr\u00e9sentent les avantages suivants : faible retrait volum\u00e9trique, absence de blocage par l'oxyg\u00e8ne, longue dur\u00e9e de vie du centre actif, capacit\u00e9 \u00e0 retarder la polym\u00e9risation et forte adh\u00e9rence aux substrats. Le photo-initiateur cationique est un \u00e9l\u00e9ment important du syst\u00e8me de photopolym\u00e9risation cationique, mais son spectre d'absorption est principalement inf\u00e9rieur \u00e0 300 nm, et la bande d'\u00e9mission de la source de lumi\u00e8re UV couramment utilis\u00e9e ne correspond pas. Cela pose le probl\u00e8me d'un faible taux d'amor\u00e7age et d'une faible efficacit\u00e9 d'amor\u00e7age. R\u00e9cemment, nous avons re\u00e7u de nombreux commentaires de clients sur la faible efficacit\u00e9 des syst\u00e8mes de polym\u00e9risation par lumi\u00e8re cationique.<\/p>\n<p>La plupart des photo-initiateurs cationiques absorbent les UV de courte longueur d'onde, jusqu'\u00e0 environ 300 nm, et ne sont donc g\u00e9n\u00e9ralement pas efficaces dans les milieux contenant des pigments. Cependant, une partie de l'\u00e9nergie lumineuse disponible peut \u00eatre mieux utilis\u00e9e en sensibilisant des mat\u00e9riaux capables d'absorber les UV \u00e0 ondes longues. La sensibilisation des syst\u00e8mes \u00e0 radicaux libres s'effectue principalement par transfert d'\u00e9nergie, mais les photo-initiateurs cationiques ont des \u00e9nergies d'\u00e9tat simple et triplet tr\u00e8s \u00e9lev\u00e9es, de sorte que le transfert d'\u00e9nergie n'est pas possible. La sensibilisation ne peut se faire que par transfert d'\u00e9lectrons, comme le montre la figure, qui est bas\u00e9e sur le potentiel redox relatif entre le sensibilisateur et le cation. Contrairement au sensibilisateur, qui joue un r\u00f4le de catalyseur dans le syst\u00e8me radicalaire, le sensibilisateur du syst\u00e8me cationique participe \u00e0 la r\u00e9action et forme des arylates.<\/p>\n<h2><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/uv-photoinitiator\/\"><span style=\"color: #00ccff;\">Photoinitiateur UV<\/span><\/a> Produits de la m\u00eame s\u00e9rie<\/strong><\/h2>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 435.77pt;\" border=\"0\" width=\"581\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt; width: 215.25pt;\" width=\"287\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-tpo-cas-75980-60-8\/\"><span style=\"color: #00ccff;\">Photoinitiateur TPO<\/span><\/a><\/td>\n<td style=\"width: 220.50pt;\" width=\"294\">CAS 75980-60-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/cas-270586-78-2\/\"><span style=\"color: #00ccff;\">Photoinitiateur TMO<\/span><\/a><\/td>\n<td>CAS 270586-78-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-pd-01-cas-579-07-7\/\"><span style=\"color: #00ccff;\">Photoinitiateur PD-01<\/span><\/a><\/td>\n<td>CAS 579-07-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-pbz-cas-2128-93-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur PBZ<\/span><\/a><\/td>\n<td>CAS 2128-93-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-oxe-02-cas-478556-66-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur OXE-02<\/span><\/a><\/td>\n<td>CAS 478556-66-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-ombb\/\"><span style=\"color: #00ccff;\">Photoinitiateur OMBB<\/span><\/a><\/td>\n<td>CAS 606-28-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mpbz-6012\/\"><span style=\"color: #00ccff;\">Photoinitiateur MPBZ (6012)<\/span><\/a><\/td>\n<td>CAS 86428-83-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mbp-cas-134-84-9\/\"><span style=\"color: #00ccff;\">Photoinitiateur MBP<\/span><\/a><\/td>\n<td>CAS 134-84-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mbf-cas-15206-55-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur MBF<\/span><\/a><\/td>\n<td>CAS 15206-55-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-lap-cas-85073-19-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur LAP<\/span><\/a><\/td>\n<td>CAS 85073-19-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-itx-cas-5495-84-1\/\"><span style=\"color: #00ccff;\">Photoinitiateur ITX<\/span><\/a><\/td>\n<td>CAS 5495-84-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-emk\/\"><span style=\"color: #00ccff;\">Photoinitiateur EMK<\/span><\/a><\/td>\n<td>CAS 90-93-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-eha-cas-21245-02-3\/\"><span style=\"color: #00ccff;\">Photoinitiateur EHA<\/span><\/a><\/td>\n<td>CAS 21245-02-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-edb-cas-10287-53-3\/\"><span style=\"color: #00ccff;\">Photo-initiateur EDB<\/span><\/a><\/td>\n<td>CAS 10287-53-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-detx-cas-82799-44-8\/\"><span style=\"color: #00ccff;\">Photoinitiateur DETX<\/span><\/a><\/td>\n<td>CAS 82799-44-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cq\/\"><span style=\"color: #00ccff;\">Photoinitiateur CQ \/ Camphorquinone<\/span><\/a><\/td>\n<td>CAS 10373-78-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cbp-cas-134-85-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur CBP<\/span><\/a><\/td>\n<td>CAS 134-85-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-bp-cas-119-61-9\/\"><span style=\"color: #00ccff;\">Photo-initiateur BP \/ Benzoph\u00e9none<\/span><\/a><\/td>\n<td>CAS 119-61-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-bms\/\"><span style=\"color: #00ccff;\">Photoinitiateur BMS<\/span><\/a><\/td>\n<td>CAS 83846-85-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-938\/\"><span style=\"color: #00ccff;\">Photoinitiateur 938<\/span><\/a><\/td>\n<td>CAS 61358-25-6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-937-cas-71786-70-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 937<\/span><\/a><\/td>\n<td>CAS 71786-70-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-dw\/\"><span style=\"color: #00ccff;\">Photo-initiateur 819 DW<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\"><span style=\"color: #00ccff;\">Photoinitiateur 819<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-784-cas-125051-32-3\/\"><span style=\"color: #00ccff;\">Photoinitiateur 784<\/span><\/a><\/td>\n<td>CAS 125051-32-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-754-cas-211510-16-6-442536-99-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 754<\/span><\/a><\/td>\n<td>CAS 211510-16-6 442536-99-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-6993-cas-71449-78-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur 6993<\/span><\/a><\/td>\n<td>CAS 71449-78-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-6976\/\"><span style=\"color: #00ccff;\">Photoinitiateur 6976<\/span><\/a><\/td>\n<td>CAS 71449-78-0 89452-37-9 108-32-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-379-cas-119344-86-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 379<\/span><\/a><\/td>\n<td>CAS 119344-86-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-369-cas-119313-12-1\/\"><span style=\"color: #00ccff;\">Photoinitiateur 369<\/span><\/a><\/td>\n<td>CAS 119313-12-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-160\/\">Photoinitiateur 160<\/a><\/span><\/td>\n<td>CAS 71868-15-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-1206\/\"><span style=\"color: #00ccff;\">Photoinitiateur 1206<\/span><\/a><\/td>\n<td><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/irgacure-1173-cas-7473-98-5\/\"><span style=\"color: #00ccff;\">Photoinitiateur 1173<\/span><\/a><\/td>\n<td>CAS 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>Un itin\u00e9raire de s\u00e9lection pratique pour les projets li\u00e9s aux photoinitiateurs<\/h2>\n<p>Lorsque les acheteurs techniques ou les formulateurs \u00e9valuent des photoinitiateurs, le cadre de d\u00e9cision le plus utile concerne g\u00e9n\u00e9ralement la qualit\u00e9 de la polym\u00e9risation associ\u00e9e \u00e0 l'ad\u00e9quation \u00e0 l'application : quel paquet polym\u00e9rise de mani\u00e8re fiable, maintient une apparence acceptable et fonctionne toujours sous la lampe, l'\u00e9paisseur du film et les conditions du substrat du processus r\u00e9el.<\/p>\n<ul>\n<li><strong>Associez d'abord le paquet \u00e0 la lampe :<\/strong> Les lampes \u00e0 mercure, les LED UV et les syst\u00e8mes de lumi\u00e8re visible peuvent classer de la m\u00eame mani\u00e8re des photoinitiateurs tr\u00e8s diff\u00e9rents.<\/li>\n<li><strong>V\u00e9rifier la polym\u00e9risation en profondeur et la polym\u00e9risation de surface s\u00e9par\u00e9ment :<\/strong> un film sec en apparence peut \u00eatre faible en dessous.<\/li>\n<li><strong>\u00c9quilibrer le jaunissement avec la r\u00e9activit\u00e9 :<\/strong> La voie de polym\u00e9risation profonde la plus forte n'est pas toujours le meilleur choix commercial si la couleur ou le risque de migration deviennent inacceptables.<\/li>\n<li><strong>Utilisez la formule finale comme r\u00e9f\u00e9rence\u00a0:<\/strong> La charge de pigment, le paquet de monom\u00e8re et l'\u00e9paisseur du film peuvent tous modifier le classement apparent du m\u00eame initiateur.<\/li>\n<\/ul>\n<h3>R\u00e9f\u00e9rences de produits recommand\u00e9es<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">CHLUMINIT TPO-L<\/a>:<\/strong> Une r\u00e9f\u00e9rence solide \u00e0 faible jaunissement pour les syst\u00e8mes UV orient\u00e9s LED.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">CHLUMINIT 819<\/a>:<\/strong> Utile lorsqu'une formulation n\u00e9cessite une absorption plus forte et un soutien \u00e0 une cure plus profonde.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/irgacure-1173-cas-7473-98-5\/\">CHLUMINIT 1173<\/a>:<\/strong> Un point de comparaison pratique pour l'initiation classique par UV \u00e0 ondes courtes.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-itx-cas-5495-84-1\/\">CHLUMINIT ITX<\/a>:<\/strong> Une ligne de support d'ondes longues utile dans de nombreux emballages d'encres d'imprimerie.<\/li>\n<\/ul>\n<h3>FAQ pour les acheteurs et les formulateurs<\/h3>\n<p><strong>Pourquoi les m\u00e9langes de photoinitiateurs sont-ils si courants ?<\/strong><br \/>Parce qu'un produit peut contr\u00f4ler le jaunissement ou bien s'adapter \u00e0 la lampe, tandis qu'un autre am\u00e9liore la profondeur de durcissement ou les performances en vitesse de ligne, l'ensemble complet est souvent plus performant que n'importe quel grade individuel.<\/p>\n<p><strong>Une polym\u00e9risation incompl\u00e8te doit-elle toujours \u00eatre r\u00e9solue en ajoutant plus d'initiateur ?<\/strong><br \/>Pas automatiquement. La limitation r\u00e9elle peut \u00eatre la lampe, l'\u00e9paisseur du film, la teinte du pigment, ou le reste du syst\u00e8me r\u00e9actif plut\u00f4t qu'un simple sous-dosage.<\/p>\n<p><!-- lc-commercial-end --><\/p>\n<h2><strong><b>Contactez-nous d\u00e8s maintenant !<\/b><\/strong><\/h2>\n<h4><strong><b>Si vous avez besoin de COA, MSDS ou TDS, veuillez indiquer vos coordonn\u00e9es dans le formulaire ci-dessous. Nous vous contacterons g\u00e9n\u00e9ralement dans les 24 heures.<\/b><\/strong> Vous pouvez \u00e9galement m'envoyer un courriel <a href=\"mailto:info@longchangchemical.com\"><span style=\"color: #0000ff;\">info@longchangchemical.com<\/span><\/a> pendant les heures de travail ( 8:30 am to 6:00 pm UTC+8 Mon.~Sat. ) ou utilisez le chat en direct du site web pour obtenir une r\u00e9ponse rapide.<\/h4>","protected":false},"excerpt":{"rendered":"<p>Cationic light-curing systems have the advantages of low volume shrinkage, no oxygen-blocking, long life of the active center, and the ability to delay curing and strong adhesion to substrates. Cationic<\/p>","protected":false},"author":1,"featured_media":4340,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5733","post","type-post","status-publish","format-standard","has-post-thumbnail","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>What is the solution for slow curing of cationic photoinitiators? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Cationic light-curing systems have the advantages of low volume shrinkage, no oxygen-blocking, long life of the active center, and the ability to delay...\" \/>\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\/solution-for-slow-curing-of-cationic-photoinitiators\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the solution for slow curing of cationic photoinitiators? 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