{"id":5829,"date":"2023-01-05T12:15:58","date_gmt":"2023-01-05T12:15:58","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5829"},"modified":"2026-04-28T10:42:12","modified_gmt":"2026-04-28T10:42:12","slug":"solve-the-problem-of-incomplete-curing-of-uv-coating","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/solve-the-problem-of-incomplete-curing-of-uv-coating\/","title":{"rendered":"Comment r\u00e9soudre le probl\u00e8me du durcissement incomplet du vernis UV ?"},"content":{"rendered":"<h1><strong>Comment r\u00e9soudre le probl\u00e8me du durcissement incomplet du vernis UV ?<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>R\u00e9ponse rapide :<\/strong> Le choix du photoinitiateur est g\u00e9n\u00e9ralement dict\u00e9 par la compatibilit\u00e9 avec la lampe, la profondeur de durcissement, le jaunissement et la performance finale du film sur le substrat r\u00e9el. Le meilleur package est rarement le grade unique le moins cher.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>La technologie du vernis UV est devenue le pilier des vernis verts en raison de son respect de l'environnement, de sa grande efficacit\u00e9 et de sa duret\u00e9 \u00e9lev\u00e9e, et elle est in\u00e9vitablement et de plus en plus accept\u00e9e dans un large \u00e9ventail d'applications. La gamme des substrats sur lesquels elle peut \u00eatre appliqu\u00e9e a \u00e9volu\u00e9 du bois et du papier aux plastiques, m\u00e9taux, c\u00e9ramiques, verre et autres domaines.<\/p>\n<p>&nbsp;<\/p>\n<p>Principe et caract\u00e9ristiques du s\u00e9chage UV<\/p>\n<p>Le durcissement aux UV (durcissement aux UV) fait r\u00e9f\u00e9rence \u00e0 une forte irradiation de lumi\u00e8re ultraviolette, au syst\u00e8me de substances photosensibles dans la r\u00e9action chimique pour produire des fragments actifs, d\u00e9clenchant le syst\u00e8me de monom\u00e8re actif ou la polym\u00e9risation zwitterionique, la r\u00e9ticulation, de sorte que le syst\u00e8me du rev\u00eatement liquide se transforme instantan\u00e9ment en un rev\u00eatement solide. Le processus de durcissement est un processus de r\u00e9action photochimique, c'est-\u00e0-dire que sous l'action de l'\u00e9nergie de la lumi\u00e8re ultraviolette, le pr\u00e9polym\u00e8re est transform\u00e9 en un film dans un laps de temps tr\u00e8s court ; la lumi\u00e8re UV provoque non seulement le durcissement de la surface du mat\u00e9riau, mais aussi une plus grande p\u00e9n\u00e9tration dans l'encre liquide durcissable aux UV et stimule le durcissement ult\u00e9rieur de l'encre en profondeur ; par rapport \u00e0 l'encre traditionnelle, la polym\u00e9risation et le s\u00e9chage de l'encre durcissable aux UV sont plus complets, sans \u00e9vaporation ni contaminants \u00e0 base de solvant, ce qui permet un durcissement de 100%. La technologie du durcissement par UV s'est d\u00e9velopp\u00e9e rapidement dans le monde, et rapidement dans les industries de l'\u00e9lectronique, de l'impression, de la construction, de la d\u00e9coration, de la m\u00e9decine, des machines, de la chimie et de l'automobile pour en promouvoir l'application.<\/p>\n<p>&nbsp;<\/p>\n<p>La technologie de s\u00e9chage UV est largement utilis\u00e9e, principalement en raison de ses avantages uniques : s\u00e9chage rapide, r\u00e9pondant aux besoins de la production automatis\u00e9e moderne ; absence de pollution, conforme \u00e0 l'orientation du d\u00e9veloppement des rev\u00eatements et encres modernes ; film de rev\u00eatement de haute qualit\u00e9, grande duret\u00e9, r\u00e9sistance aux rayures, r\u00e9sistance \u00e0 la corrosion et autres avantages, et elle a attir\u00e9 beaucoup d'attention.<\/p>\n<p>&nbsp;<\/p>\n<p>Nous examinons ici les six facteurs qui influencent le durcissement incomplet par la lumi\u00e8re UV.<\/p>\n<p>&nbsp;<\/p>\n<p>1, l'\u00e9nergie de la lumi\u00e8re ultraviolette.<\/p>\n<p>(1). L'\u00e9nergie de la lumi\u00e8re UV est insuffisante, g\u00e9n\u00e9ralement parce que la densit\u00e9 de puissance de production de la lampe UV est trop faible, ou parce que les param\u00e8tres du transformateur ne correspondent pas, ce qui entra\u00eene un durcissement incomplet.<\/p>\n<p>(2). Les rev\u00eatements UV dans le photo-initiateur ne sont pas suffisants pour absorber une \u00e9nergie UV raisonnable, ce qui entra\u00eene un durcissement incomplet.<\/p>\n<p>&nbsp;<\/p>\n<p>2. La temp\u00e9rature \u00e0 l'int\u00e9rieur du four UV est trop basse.<\/p>\n<p>Le four UV en raison d'un volume d'air excessif du ventilateur centrifuge, ou du r\u00f4le d'un refroidissement \u00e0 l'eau excessif, la situation de blocage de l'oxyg\u00e8ne est trop forte, ce qui entra\u00eene une temp\u00e9rature de surface de la lampe UV trop basse pour fonctionner correctement, d'o\u00f9 un durcissement incomplet des rev\u00eatements UV.<\/p>\n<p>&nbsp;<\/p>\n<p>3, la distance de la lampe \u00e0 photopolym\u00e9riser.<\/p>\n<p>La lampe UV et le r\u00e9flecteur et la distance entre la surface de l'objet \u00e9clair\u00e9 sont de 7 ~ 8cm lorsque l'\u00e9nergie UV est la plus forte, mais selon les diff\u00e9rents substrats de durcissement, la distance g\u00e9n\u00e9rale de durcissement est s\u00e9lectionn\u00e9e \u00e0 environ 10 ~ 15cm.<\/p>\n<p>(1). Si la distance est trop faible, la temp\u00e9rature de surface de la lampe UV \u00e9tant tr\u00e8s \u00e9lev\u00e9e, le substrat est d\u00e9form\u00e9 par la chaleur.<\/p>\n<p>(2). La distance est trop \u00e9lev\u00e9e, l'\u00e9nergie UV est faible, la surface du substrat n'est pas s\u00e8che et collante.<\/p>\n<p>&nbsp;<\/p>\n<p>4, l'\u00e9paisseur du vernis UV.<\/p>\n<p>L'\u00e9paisseur du rev\u00eatement UV joue un r\u00f4le cl\u00e9 dans l'effet du s\u00e9chage UV, en fonction de la teinte de la peinture, de la temp\u00e9rature, de la vitesse de s\u00e9chage, de la surface du substrat et d'autres conditions diff\u00e9rentes pour un d\u00e9ploiement appropri\u00e9.<\/p>\n<p>(1). Le vernis est trop \u00e9pais, le temps de s\u00e9chage est relativement long sous l'irradiation d'une source lumineuse de m\u00eame puissance, ce qui, d'une part, affecte le s\u00e9chage en profondeur du vernis UV et, d'autre part, rend la temp\u00e9rature de surface du substrat trop \u00e9lev\u00e9e, ce qui entra\u00eene la d\u00e9formation du substrat.<\/p>\n<p>(2). La couche de rev\u00eatement est trop fine, ce qui entra\u00eene une mauvaise brillance de la surface du produit et ne permet pas d'obtenir l'effet de surface souhait\u00e9.<\/p>\n<p>&nbsp;<\/p>\n<p>5. Vitesse de la bande transporteuse de la ligne d'enrobage.<\/p>\n<p>La vitesse du tapis roulant de l'\u00e9quipement, c'est-\u00e0-dire la vitesse de photopolym\u00e9risation, doit \u00eatre adapt\u00e9e en fonction des diff\u00e9rents substrats, rev\u00eatements et distances de polym\u00e9risation.<\/p>\n<p>(1). La vitesse de durcissement est trop rapide, le vernis UV de la surface du substrat est collant ou la surface est s\u00e8che mais pas l'int\u00e9rieur.<\/p>\n<p>(2). Si la vitesse d'ex\u00e9cution est lente, la surface du substrat vieillira.<\/p>\n<p>&nbsp;<\/p>\n<p>6, l'environnement du processus de photopolym\u00e9risation.<\/p>\n<p>La viscosit\u00e9 du vernis UV varie fortement en fonction de la temp\u00e9rature, il convient donc d'ajuster la temp\u00e9rature ambiante, g\u00e9n\u00e9ralement comprise entre 15 et 25 \u2103. Une temp\u00e9rature trop basse entra\u00eenera un ph\u00e9nom\u00e8ne de peau d'orange et il faut veiller \u00e0 ce que l'impression ne soit pas expos\u00e9e \u00e0 la lumi\u00e8re directe du soleil.<\/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-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>UV coating technology has become the mainstay of green coatings because of its environmental friendliness, high efficiency and high hardness, and is inevitably and increasingly accepted in a wide range<\/p>","protected":false},"author":1,"featured_media":5190,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5829","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 solve the problem of incomplete curing of UV coating? 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