{"id":5834,"date":"2023-01-06T13:31:19","date_gmt":"2023-01-06T13:31:19","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5834"},"modified":"2026-04-28T10:42:13","modified_gmt":"2026-04-28T10:42:13","slug":"alicyclic-epoxy-resin-in-uv-light-curing-coating","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/alicyclic-epoxy-resin-in-uv-light-curing-coating\/","title":{"rendered":"Comment appliquer une r\u00e9sine \u00e9poxyde alicyclique dans un rev\u00eatement durcissant \u00e0 la lumi\u00e8re UV ?"},"content":{"rendered":"<h1><strong>Comment appliquer une r\u00e9sine \u00e9poxyde alicyclique dans un rev\u00eatement durcissant \u00e0 la lumi\u00e8re UV ?<\/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>La technologie de s\u00e9chage UV se divise en deux grandes cat\u00e9gories : les syst\u00e8mes UV radicaux libres et les syst\u00e8mes UV cationiques. Les vernis UV cationiques pr\u00e9sentent d'excellentes propri\u00e9t\u00e9s de traitement dans l'industrie des bo\u00eetes m\u00e9talliques, de l'acier lamin\u00e9 et de l'emballage flexible, et sont largement utilis\u00e9s.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Les mat\u00e9riaux UV cationiques et UV radicaux libres sont tr\u00e8s diff\u00e9rents, mais leur composition globale est similaire. Les syst\u00e8mes cationiques sont domin\u00e9s par les mat\u00e9riaux \u00e9poxy, mais les \u00e9poxy ordinaires de type bisph\u00e9nol A r\u00e9agissent lentement, et les mat\u00e9riaux alicycliques de type \u00e9poxy\/ox\u00e9tane trouvent davantage d'applications ; les syst\u00e8mes \u00e0 radicaux libres sont d\u00e9sormais tr\u00e8s m\u00fbrs sur le plan commercial, et les mat\u00e9riaux acrylates modifi\u00e9s \u00e9poxy\/polyester\/polyur\u00e9thane offrent un plus grand choix de solutions.<\/p>\n<p>&nbsp;<\/p>\n<p>Le syst\u00e8me cationique UV permet de choisir moins de mati\u00e8res premi\u00e8res que le syst\u00e8me radicalaire, et le polym\u00e8re est principalement une r\u00e9sine \u00e9poxyde alicyclique \u00e0 faible viscosit\u00e9. Prenons l'exemple des r\u00e9sines \u00e9poxydes alicycliques.<\/p>\n<p>Le TTA21, dont les sp\u00e9cifications de puret\u00e9 sont vari\u00e9es, est le produit le plus dominant dans l'industrie du vernis UV. L'application des vernis UV cationiques continuant \u00e0 se d\u00e9velopper de mani\u00e8re significative, on s'attend \u00e0 ce que la quantit\u00e9 de r\u00e9sines \u00e9poxydes alicycliques repr\u00e9sent\u00e9e par le TTA21 augmente.<\/p>\n<p>&nbsp;<\/p>\n<p>Dans l'application sp\u00e9cifique des encres et des rev\u00eatements, outre le fait que les deux syst\u00e8mes ont besoin de la lumi\u00e8re UV pour fournir l'\u00e9nergie de durcissement, ils pr\u00e9sentent des diff\u00e9rences majeures en termes de performances et de caract\u00e9ristiques de r\u00e9action.<\/p>\n<p>&nbsp;<\/p>\n<p>1. Effet de blocage de l'oxyg\u00e8ne<\/p>\n<p>Le syst\u00e8me cationique UV n'a pas d'effet de blocage de l'oxyg\u00e8ne, mais craint davantage l'eau, l'humidit\u00e9 affectant l'efficacit\u00e9 du durcissement du syst\u00e8me cationique ; les radicaux libres UV sont \u00e0 l'oppos\u00e9 et sont davantage affect\u00e9s par le blocage de l'oxyg\u00e8ne.<\/p>\n<p>&nbsp;<\/p>\n<p>2. Adh\u00e9sion au substrat<\/p>\n<p>En g\u00e9n\u00e9ral, dans les cas o\u00f9 il est plus difficile d'adh\u00e9rer \u00e0 la surface du substrat, comme le verre, le m\u00e9tal ou le plastique haute densit\u00e9, le cation UV est plus efficace que la base libre d'UV.<\/p>\n<p>&nbsp;<\/p>\n<p>3. Taux de r\u00e9tr\u00e9cissement du volume<\/p>\n<p>Le taux de r\u00e9tr\u00e9cissement de la formulation du syst\u00e8me de radical libre UV est g\u00e9n\u00e9ralement sup\u00e9rieur \u00e0 10%, tandis que le syst\u00e8me de cation UV peut contr\u00f4ler le taux de r\u00e9tr\u00e9cissement de 1-3%, ce qui constitue une bonne solution pour r\u00e9soudre le probl\u00e8me du r\u00e9tr\u00e9cissement du volume.<\/p>\n<p>&nbsp;<\/p>\n<p>4. Caract\u00e9ristiques de durcissement \u00e0 l'obscurit\u00e9<\/p>\n<p>Le syst\u00e8me de cation UV peut continuer \u00e0 r\u00e9agir \u00e0 la couche interne apr\u00e8s l'arr\u00eat de l'irradiation de la source lumineuse, pour compl\u00e9ter le mat\u00e9riau apr\u00e8s le durcissement, c'est la caract\u00e9ristique de durcissement sombre, tr\u00e8s appropri\u00e9e pour les applications de rev\u00eatement \u00e9pais, le chauffage du cation apr\u00e8s la vitesse de durcissement est consid\u00e9rablement utile ; le radical libre UV est un syst\u00e8me de r\u00e9action de type stop-and-go.<\/p>\n<p>&nbsp;<\/p>\n<p>5. S\u00e9curit\u00e9 des contacts<\/p>\n<p>Le degr\u00e9 de r\u00e9action du syst\u00e8me de cation UV est proche de 100%, la s\u00e9curit\u00e9 peut \u00eatre certifi\u00e9e par les tests REACH \/ FDA, et peut \u00eatre utilis\u00e9e dans l'emballage alimentaire et d'autres domaines connexes.<\/p>\n<p>&nbsp;<\/p>\n<p>6. Vitesse de durcissement de la lumi\u00e8re<\/p>\n<p>En g\u00e9n\u00e9ral, la vitesse de durcissement du syst\u00e8me radicalaire UV est sup\u00e9rieure \u00e0 celle du syst\u00e8me cationique, affect\u00e9 par des produits bloquant l'oxyg\u00e8ne, le s\u00e9chage de la surface cationique sera plus rapide, mais la vitesse de s\u00e9chage r\u00e9elle n'est pas aussi rapide que celle du radical libre, vous pouvez promouvoir la r\u00e9action en chauffant, et finalement atteindre un tr\u00e8s bon degr\u00e9 d'ach\u00e8vement.<\/p>\n<p>&nbsp;<\/p>\n<p>Notes de formulation<\/p>\n<p>&nbsp;<\/p>\n<p>Le syst\u00e8me de cation UV peut \u00eatre m\u00e9lang\u00e9 au syst\u00e8me de radical libre UV dans n'importe quelle proportion, appel\u00e9 syst\u00e8me hybride UV, ce qui peut am\u00e9liorer la vitesse de durcissement relative du cation UV et le retrait du radical libre UV, affect\u00e9 par la barri\u00e8re \u00e0 l'oxyg\u00e8ne et d'autres d\u00e9fauts, la m\u00eame \u00e9paisseur de film de la diff\u00e9rence d'\u00e9nergie de durcissement du syst\u00e8me n'est pas grande.<\/p>\n<p>&nbsp;<\/p>\n<p>Le syst\u00e8me de cation UV repose sur l'initiateur g\u00e9n\u00e9r\u00e9 par l'acide fort de Lewis pour r\u00e9aliser le point actif de la r\u00e9action d'ouverture de cycle, la formule affectera g\u00e9n\u00e9ralement l'activit\u00e9 de l'initiateur du mat\u00e9riau, qui est principalement constitu\u00e9 de pigments organiques azo\u00efques (pouvant \u00eatre modifi\u00e9s pour assurer la protection), et de radicaux libres m\u00e9lang\u00e9s \u00e0 TPO\/819\/907 et \u00e0 d'autres structures contenant des \u00e9l\u00e9ments P, S et autres de l'initiateur, et similaire \u00e0 115 amine \u00e0 plusieurs niveaux.<\/p>\n<p>&nbsp;<\/p>\n<p>L'humidit\u00e9 a un impact plus important sur le durcissement du syst\u00e8me de cation UV, le contr\u00f4le de l'humidit\u00e9 ambiante dans la zone 50% est appropri\u00e9 ; tandis que le chauffage acc\u00e9l\u00e8re la vitesse de r\u00e9action.<\/p>\n<p>&nbsp;<\/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-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<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cq\/\">CHLUMINIT CQ<\/a>:<\/strong> Une r\u00e9f\u00e9rence directe pour les discussions sur le durcissement par la lumi\u00e8re visible et sensible \u00e0 la couleur.<\/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>UV curing technology is broadly divided into UV free radical and UV cationic systems, UV cationic coatings with excellent processing properties in metal cans, rolled steel and flexible packaging industry<\/p>","protected":false},"author":1,"featured_media":4174,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5834","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>How to apply alicyclic epoxy resin in UV light curing coating? 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