{"id":5401,"date":"2022-07-23T13:33:09","date_gmt":"2022-07-23T13:33:09","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5401"},"modified":"2026-04-28T10:42:04","modified_gmt":"2026-04-28T10:42:04","slug":"what-are-the-elements-in-selecting-uv-oligomers-for-light-curing-coating-formulations","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/what-are-the-elements-in-selecting-uv-oligomers-for-light-curing-coating-formulations\/","title":{"rendered":"Quels sont les \u00e9l\u00e9ments de s\u00e9lection des oligom\u00e8res UV pour les formulations de vernis photopolym\u00e9risables ?"},"content":{"rendered":"<h1><strong>Quels sont les \u00e9l\u00e9ments de s\u00e9lection des oligom\u00e8res UV pour les formulations de vernis photopolym\u00e9risables ?<\/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 vernis photopolym\u00e9risables, \u00e9galement connus sous le nom de vernis UV, utilisent la lumi\u00e8re UV comme source d'\u00e9nergie pour polym\u00e9riser le vernis. Ils peuvent \u00eatre durcis rapidement sur des substrats tels que le papier, le plastique, le cuir et le bois, sans n\u00e9cessiter de chaleur. Les vernis photopolym\u00e9risables sont principalement compos\u00e9s de r\u00e9sines photopolym\u00e9risables (oligom\u00e8res), de photoinitiateurs (photosensibilisateurs), de diluants et d'additifs. Les r\u00e9sines photopolym\u00e9risables sont g\u00e9n\u00e9ralement des r\u00e9sines de faible poids mol\u00e9culaire avec des liaisons insatur\u00e9es, telles que les polyesters insatur\u00e9s, les oligom\u00e8res acryliques, etc. Cet article traite des \u00e9l\u00e9ments de s\u00e9lection des r\u00e9sines photopolym\u00e9risables (oligom\u00e8res) dans les formulations de peintures photopolym\u00e9risables.<\/p>\n<p>I. Viscosit\u00e9.<\/p>\n<p>Le choix d'une r\u00e9sine \u00e0 faible viscosit\u00e9 permet de r\u00e9duire la quantit\u00e9 de diluant actif. Mais les r\u00e9sines \u00e0 faible viscosit\u00e9 ont souvent une faible masse mol\u00e9culaire relative, ce qui affecte les propri\u00e9t\u00e9s physiques et m\u00e9caniques du film durci.<\/p>\n<p>Deuxi\u00e8mement, la vitesse de polym\u00e9risation de la lumi\u00e8re.<\/p>\n<p>En r\u00e8gle g\u00e9n\u00e9rale, plus le degr\u00e9 fonctionnel de la r\u00e9sine photopolym\u00e9risable est \u00e9lev\u00e9, plus la vitesse de photopolym\u00e9risation est rapide, la vitesse de photopolym\u00e9risation de l'acrylate \u00e9poxy est rapide, la vitesse de photopolym\u00e9risation de l'oligom\u00e8re modifi\u00e9 par l'amine est \u00e9galement rapide. Il est tr\u00e8s important de choisir une r\u00e9sine ayant une vitesse de photopolym\u00e9risation rapide, ce qui permet non seulement de r\u00e9duire la quantit\u00e9 de photo-initiateur, mais aussi de r\u00e9pondre aux exigences de polym\u00e9risation rapide de la ligne de rev\u00eatement photopolym\u00e9risable.<\/p>\n<p>Troisi\u00e8mement, les propri\u00e9t\u00e9s physiques et m\u00e9caniques.<\/p>\n<p>Les propri\u00e9t\u00e9s physiques et m\u00e9caniques du film de peinture photopolym\u00e9risable sont principalement d\u00e9termin\u00e9es par la performance du film de polym\u00e9risation de la r\u00e9sine photopolym\u00e9risable, et les propri\u00e9t\u00e9s physiques et m\u00e9caniques des diff\u00e9rentes vari\u00e9t\u00e9s de peinture photopolym\u00e9risable sont diff\u00e9rentes, le choix de la r\u00e9sine photopolym\u00e9risable est \u00e9galement diff\u00e9rent. Les propri\u00e9t\u00e9s physiques et m\u00e9caniques du film de peinture sont principalement les indicateurs suivants.<\/p>\n<p>Duret\u00e9 : duret\u00e9 g\u00e9n\u00e9rale des \u00e9poxy-acrylates et des polyesters insatur\u00e9s ; les oligom\u00e8res contenant une structure \u00e0 anneaux de benz\u00e8ne sont \u00e9galement propices \u00e0 l'am\u00e9lioration de la duret\u00e9. Fonctionnalit\u00e9 \u00e9lev\u00e9e, densit\u00e9 de r\u00e9ticulation \u00e9lev\u00e9e, Tg \u00e9lev\u00e9 et duret\u00e9 \u00e9lev\u00e9e.<\/p>\n<p>Flexibilit\u00e9 : les acryliques ur\u00e9thanes, les acryliques polyesters, les acryliques poly\u00e9thers et les acryliques purs sont g\u00e9n\u00e9ralement plus flexibles. Les oligom\u00e8res contiennent des structures aliphatiques \u00e0 longue cha\u00eene de carbone et sont flexibles. Plus la masse mol\u00e9culaire relative est \u00e9lev\u00e9e, meilleure est la flexibilit\u00e9. Faible densit\u00e9 de r\u00e9ticulation, bonne flexibilit\u00e9. Faible Tg, bonne flexibilit\u00e9.<\/p>\n<p>R\u00e9sistance \u00e0 l'abrasion, la r\u00e9sine ur\u00e9thane acrylique pr\u00e9sente une bonne r\u00e9sistance \u00e0 l'abrasion. Bonne r\u00e9sistance \u00e0 l'abrasion pour les oligom\u00e8res avec formation facile de liaisons hydrog\u00e8ne entre les mol\u00e9cules. Densit\u00e9 de r\u00e9ticulation \u00e9lev\u00e9e, bonne r\u00e9sistance \u00e0 l'abrasion.<\/p>\n<p>R\u00e9sistance \u00e0 la traction, les acrylates \u00e9poxy et les polyesters insatur\u00e9s ont une r\u00e9sistance \u00e0 la traction \u00e9lev\u00e9e, g\u00e9n\u00e9ralement une masse mol\u00e9culaire relative plus \u00e9lev\u00e9e, une plus grande polarit\u00e9, moins de flexibilit\u00e9 et des oligom\u00e8res plus r\u00e9ticul\u00e9s ont une r\u00e9sistance \u00e0 la traction plus \u00e9lev\u00e9e.<\/p>\n<p>R\u00e9sistance aux chocs : les r\u00e9sines acryliques d'ur\u00e9thane, les r\u00e9sines acryliques de polyester, les r\u00e9sines acryliques de poly\u00e9ther et les acryliques purs ont une meilleure r\u00e9sistance aux chocs. Les oligom\u00e8res flexibles \u00e0 faible Tg pr\u00e9sentent g\u00e9n\u00e9ralement une bonne r\u00e9sistance aux chocs.<\/p>\n<p>Adh\u00e9sion, oligom\u00e8res \u00e0 faible retrait, bonne adh\u00e9rence aux substrats ; les oligom\u00e8res contenant des groupes tels que -OH et -COOH ont une bonne adh\u00e9rence aux m\u00e9taux. Oligom\u00e8res \u00e0 faible tension superficielle, bonne mouillabilit\u00e9 et bon \u00e9talement sur les substrats, bonne adh\u00e9rence.<\/p>\n<p>R\u00e9sistance au jaunissement : les r\u00e9sines acryliques polyur\u00e9thanes aliphatiques, les r\u00e9sines acryliques poly\u00e9ther et les acryliques pures pr\u00e9sentent une bonne r\u00e9sistance au jaunissement. L'ajout d'agents anti-jaunissement appropri\u00e9s \u00e0 la formulation peut souvent am\u00e9liorer efficacement la r\u00e9sistance au jaunissement des rev\u00eatements photopolym\u00e9ris\u00e9s.<\/p>\n<p>R\u00e9sistance chimique : les acrylates \u00e9poxy, les acryliques polyur\u00e9thanes et les acryliques polyesters ont tous une bonne r\u00e9sistance chimique, mais les acryliques polyesters sont moins r\u00e9sistants aux alcalis ; l'augmentation de la densit\u00e9 de r\u00e9ticulation pendant le durcissement accro\u00eet la r\u00e9sistance chimique du produit.<\/p>\n<p>Brillance, les acrylates \u00e9poxy et les polyesters insatur\u00e9s sont tr\u00e8s brillants, la densit\u00e9 de r\u00e9ticulation augmente, la brillance augmente. Tg \u00e9lev\u00e9, indice de r\u00e9fraction \u00e9lev\u00e9 des oligom\u00e8res, bonne brillance.<\/p>\n<p>Mouillabilit\u00e9 des pigments, les oligom\u00e8res g\u00e9n\u00e9raux modifi\u00e9s par des acides gras et des amines ont une meilleure mouillabilit\u00e9 des pigments, les oligom\u00e8res contenant des -OH et des -COOH ont \u00e9galement une meilleure mouillabilit\u00e9 des pigments.<\/p>\n<p>Quatri\u00e8mement, le retrait de polym\u00e9risation de la r\u00e9sine photopolym\u00e9risable (oligom\u00e8re).<\/p>\n<p>Un faible retrait de polym\u00e9risation est propice \u00e0 l'am\u00e9lioration de l'adh\u00e9rence du film polym\u00e9ris\u00e9 au substrat, les fonctionnalit\u00e9s des oligom\u00e8res augmentent, la densit\u00e9 de r\u00e9ticulation augmente, le retrait de polym\u00e9risation augmente \u00e9galement.<\/p>\n<p>Cinqui\u00e8mement, la temp\u00e9rature de transition vitreuse de l'oligom\u00e8re Tg.<\/p>\n<p>Oligom\u00e8re Tg \u00e9lev\u00e9, duret\u00e9 g\u00e9n\u00e9ralement \u00e9lev\u00e9e, bonne brillance ; oligom\u00e8re Tg faible, bonne flexibilit\u00e9, r\u00e9sistance aux chocs ou...<\/p>\n<p>Sixi\u00e8mement, toxicit\u00e9 et irritation.<\/p>\n<p>L'oligom\u00e8re, en raison de sa masse mol\u00e9culaire relative plus importante, est une r\u00e9sine visqueuse, non volatile, non inflammable et non explosive. Sa toxicit\u00e9 est \u00e9galement faible, de m\u00eame que l'irritation de la peau.<\/p>\n<h2><strong>Produits de la m\u00eame s\u00e9rie<\/strong><\/h2>\n<table style=\"border-collapse: collapse; width: 383.27pt;\" border=\"0\" width=\"511\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt; width: 119.25pt;\" width=\"159\" height=\"64\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/iboma-cas-7534-94-3\/\"><span style=\"color: #00ccff;\"> IBOMA<\/span><\/a><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">M\u00e9thacrylate d'isobornyle<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">7534-94-3<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><span style=\"color: #00ccff;\"> CTFA<\/span><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">acrylate de m\u00e9thyle (5-\u00e9thyl-1,3-dioxan-5-yl)<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">66492-51-1<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/-iboa-cas-5888-33-5\/\"><span style=\"color: #00ccff;\"> IBOA<\/span><\/a><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Acrylate d'isobornyle<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">5888-33-5<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/tpgda-cas-42978-66-5\/\"> TPGDA<\/a><\/span><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Diacrylate de tripropyl\u00e8ne glycol<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">42978-66-5<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/peta-cas-3524-68-3\/\"> PETA<\/a><\/span><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Triacrylate de penta\u00e9rythritol<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">3524-68-3<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/tmptma-cas-3290-92-4\/\"><span style=\"color: #00ccff;\"> TMPTMA<\/span><\/a><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Trim\u00e9thacrylate de trim\u00e9thylolpropane<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">3290-92-4<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/-thfa-cas-2399-48-6\/\"><span style=\"color: #00ccff;\"> THFA<\/span><\/a><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Acrylate de t\u00e9trahydrofurfuryle<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">2399-48-6<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/npgda-cas-2223-82-7\/\"> NPGDA<\/a><\/span><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Diacrylate de n\u00e9opentyle et de glycol<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">2223-82-7<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><span style=\"color: #00ccff;\"> TEGDA<\/span><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Diacrylate de tri\u00e9thyl\u00e8ne glycol<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">1680-21-3<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/tmpta-cas-15625-89-5\/\"><span style=\"color: #00ccff;\"> TMPTA<\/span><\/a><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Triacrylate de trim\u00e9thylolpropane<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">15625-89-5<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/142-90-5\/\"> LMA<\/a><\/span><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">M\u00e9thacrylate de dod\u00e9cyle \/ m\u00e9thacrylate de lauryle<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">142-90-5<\/td>\n<\/tr>\n<tr style=\"height: 48.00pt;\">\n<td style=\"height: 48.00pt;\" height=\"64\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/tegdma-cas-109-16-0\/\"> TEGDMA<\/a><\/span><\/td>\n<td class=\"et4\" style=\"width: 182.25pt;\" width=\"243\">Dim\u00e9thacrylate de tri\u00e9thyl\u00e8ne glycol<\/td>\n<td class=\"et5\" style=\"width: 81.75pt;\" width=\"109\">109-16-0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><\/h2>\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\/iboa-monomer-cas-5888-33-5\/\">CHLUMICRYL IBOA<\/a>:<\/strong> Un monom\u00e8re de r\u00e9f\u00e9rence solide \u00e0 faible viscosit\u00e9 lorsque la duret\u00e9 et une bonne fluidit\u00e9 sont importantes.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/tmpta-cas-15625-89-5\/\">CHLUMICRYL TMPTA<\/a>:<\/strong> Un monom\u00e8re r\u00e9actif standard de r\u00e9f\u00e9rence lorsqu'une densit\u00e9 de r\u00e9ticulation plus \u00e9lev\u00e9e est requise.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/tpgda-cas-42978-66-5\/\">CHLUMICRYL TPGDA<\/a>:<\/strong> Un point de r\u00e9f\u00e9rence pratique pour les diluants r\u00e9actifs dans de nombreux syst\u00e8mes \u00e0 monom\u00e8res UV et \u00e0 jet d&#039;encre.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/thfa-monomer-cas-2399-48-6\/\">CHLUMICRYL THFA<\/a>:<\/strong> Useful when monomer polarity and flexibility balance are part of the formulation screen.<\/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 remplir vos coordonn\u00e9es dans le formulaire ci-dessous, nous vous contacterons g\u00e9n\u00e9ralement dans les 24 heures. Vous pouvez \u00e9galement m'envoyer un courriel <span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"mailto:info@longchangchemical.com\">info@longchangchemical.com<\/a><\/span> 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.<\/b><\/strong><\/h4>","protected":false},"excerpt":{"rendered":"<p>Light curing coatings are also known as UV curing coatings, which use UV light as the energy source for curing the coating. They can be cured quickly on substrates such<\/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-5401","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>What are the elements in selecting UV oligomers for light-curing coating formulations? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Light curing coatings are also known as UV curing coatings, which use UV light as the energy source for curing the coating. 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