{"id":8558,"date":"2025-05-13T06:50:10","date_gmt":"2025-05-13T06:50:10","guid":{"rendered":"https:\/\/changhongchemical.com\/?p=8558"},"modified":"2026-04-27T11:15:57","modified_gmt":"2026-04-27T11:15:57","slug":"introduction-to-photoinitiators-and-their-standards","status":"publish","type":"post","link":"https:\/\/changhongchemical.com\/fr\/introduction-to-photoinitiators-and-their-standards\/","title":{"rendered":"Introduction aux photo-initiateurs et \u00e0 leurs normes"},"content":{"rendered":"<p>Industrie du rev\u00eatement :<br \/>\nI\u3001Termes et d\u00e9finitions photo-initiateur (photoinitiateur), selon GB\/T 41764-2022 \"Determination of the content of photoinitiators in radiation-curing coatings Gas Chromatography-Mass Spectrometry Method\" au point 3.1 d\u00e9crit comme : une substance qui peut absorber l'\u00e9nergie radiante, et qui subit des changements chimiques par excitation, g\u00e9n\u00e9rant des interm\u00e9diaires r\u00e9actifs (radicaux libres ou cations) ayant la capacit\u00e9 d'initier la polym\u00e9risation.<br \/>\nII\u3001Normes pertinentes GB\/T 41764-2022 \"D\u00e9termination de la teneur en photo-initiateurs dans les rev\u00eatements \u00e0 durcissement par rayonnement Chromatographie en phase gazeuse-Spectrom\u00e9trie de masse\" HG\/T 5778-2020 \"Rev\u00eatements \u00e0 durcissement par ultraviolets (UV) pour les mat\u00e9riaux d'emballage cosm\u00e9tiques\" SN\/T 4317-2015 \"D\u00e9tection de la migration de 7 photo-initiateurs dans les aliments export\u00e9s Chromatographie en phase liquide-Spectrom\u00e9trie de masse\/Spectrom\u00e9trie de masse\".<br \/>\nIV\u3001Le m\u00e9canisme et la classification des photo-initiateurs dans l'absorption directe ou indirecte de l'\u00e9nergie lumineuse, les mol\u00e9cules initiatrices de l'\u00e9tat de base sautent \u00e0 l'\u00e9tat excit\u00e9 unilin\u00e9aire, par le biais de la course inter-syst\u00e8mes sautent \u00e0 l'\u00e9tat excit\u00e9 tri-lin\u00e9aire. Dans l'\u00e9tat unilin\u00e9aire excit\u00e9 ou l'\u00e9tat trilin\u00e9aire apr\u00e8s une action chimique d'une seule mol\u00e9cule ou bimol\u00e9culaire, la production de polym\u00e9risation de monom\u00e8res peut \u00eatre d\u00e9clench\u00e9e par les fragments actifs (radicaux libres, cations, anions, etc.), d\u00e9clenchant ainsi la polym\u00e9risation de monom\u00e8res, la r\u00e9ticulation et le durcissement. Il existe de nombreux types de photo-initiateurs. En fonction des diff\u00e9rents m\u00e9canismes de d\u00e9clenchement, les photo-initiateurs peuvent \u00eatre divis\u00e9s en photo-initiateurs cationiques et photo-initiateurs \u00e0 radicaux libres, parmi lesquels les photo-initiateurs \u00e0 radicaux libres ont le plus large \u00e9ventail d'applications.<\/p>\n<p>4. Plusieurs photo-initiateurs courants et leurs domaines d'application<br \/>\n907 et ITX ou DETX photo-initiateurs utilis\u00e9s en conjonction avec le syst\u00e8me color\u00e9, les principaux domaines d'application pour la d\u00e9coration int\u00e9rieure, etc. ; 1173 et TPO avec un meilleur effet de durcissement, les principaux domaines d'application pour les meubles et les vernis \u00e0 bois, les rev\u00eatements de sol, les d\u00e9corations int\u00e9rieures, les principaux domaines d'application sont : les vernis \u00e0 bois pour meubles, les rev\u00eatements de sol, les rev\u00eatements \u00e9lectroniques 3C, l'int\u00e9rieur des automobiles, la d\u00e9coration int\u00e9rieure, les produits en plastique, etc. 184 peut \u00eatre utilis\u00e9 avec le TPO et d'autres photo-initiateurs \u00e0 faible jaunissement dans le syst\u00e8me blanc, principalement utilis\u00e9 dans : les vernis pour bois d'ameublement, les rev\u00eatements de sol, les rev\u00eatements \u00e9lectroniques 3C, l'int\u00e9rieur des automobiles, la d\u00e9coration int\u00e9rieure, les produits en plastique, etc.<br \/>\n1. 184<br \/>\nLa longueur d'onde d'absorption maximale est de 333 nm, principalement utilis\u00e9e pour initier le durcissement rapide des syst\u00e8mes d'acrylate et de m\u00e9thacrylate, dosage de r\u00e9f\u00e9rence de 2% \u00e0 4%, temps de durcissement de 190 s et 140 s, respectivement.<\/p>\n<p>Alias : 1-Hydroxycyclohexyl ph\u00e9nylc\u00e9tone<br \/>\nNom anglais : 1-Hydroxycyclohexyl phenyl ketone<br \/>\nNo CAS : <a href=\"https:\/\/changhongchemical.com\/product\/photoinitiator-184-cas-947-19-3\/\">947-19-3<\/a><br \/>\nAspect : Cristal blanc ou blanc cass\u00e9<br \/>\nTransmittance : 425nm\u226598.0%, 500nm\u226599.0% (1g\/10mL tolu\u00e8ne)<br \/>\nPic d'absorption : 246nm, 280nm, 333nm (dans une solution de m\u00e9thanol)<br \/>\nSolubilit\u00e9 : 20\u2103 (g\/100g solution)<\/p>\n<p>2. 907<br \/>\n907 peut \u00eatre dans le processus de durcissement de l'encre, l'absorption de l'\u00e9nergie du rayonnement UV et la formation de radicaux libres ou de cations, d\u00e9clenchant la polym\u00e9risation du monom\u00e8re et de l'oligom\u00e8re, les r\u00e9actions de r\u00e9ticulation et de greffage, dans un laps de temps tr\u00e8s court pour faire durcir l'encre en une structure de polym\u00e8res \u00e0 mailles tridimensionnelles.<\/p>\n<p>Alias : 2-m\u00e9thyl-1-(4-m\u00e9thylthioph\u00e9nyl)-2-morpholinyl-1-propanone<br \/>\nNo CAS : <a href=\"https:\/\/changhongchemical.com\/product\/photoinitiator-907-cas-71868-10-5\/\">71868-10-5<\/a><br \/>\nAspect : Poudre cristalline blanche<br \/>\nTransmittance : 425nm\u226590.0%, 500nm\u226595.0% (1g\/10mL tolu\u00e8ne)<br \/>\nPic d'absorption : 230nm, 304nm (dans une solution de m\u00e9thanol)<br \/>\nSolubilit\u00e9 : 20\u2103 (g\/100g solution)<\/p>\n<p>V\u3001La tendance au d\u00e9veloppement des photo-initiateurs Les photo-initiateurs, en plus de r\u00e9pondre aux exigences environnementales telles que certaines normes (comme les rev\u00eatements de qualit\u00e9 alimentaire) sur les r\u00e9sidus de photo-initiateurs ont des limites strictes, en termes de performance doivent avoir un coefficient d'extinction molaire \u00e9lev\u00e9, une faible toxicit\u00e9, une bonne solubilit\u00e9 et d'autres caract\u00e9ristiques, et une correspondance spectrale avec la source lumineuse.<br \/>\nAvec l'am\u00e9lioration de la sensibilisation du public \u00e0 la s\u00e9curit\u00e9, la s\u00e9curit\u00e9 de l'emballage des aliments et des m\u00e9dicaments est de plus en plus importante, et l'Europe a mis au point des encres strictes pour l'emballage des aliments et des m\u00e9dicaments. Globalement, les photo-initiateurs \u00e0 macromol\u00e9cules seront de plus en plus utilis\u00e9s dans les encres d'emballage en raison de leur faible toxicit\u00e9 et de leur faible migration, de sorte que le d\u00e9veloppement de nouveaux types de photo-initiateurs \u00e0 macromol\u00e9cules constitue la tendance de d\u00e9veloppement des produits de l'industrie.<br \/>\nLes produits formul\u00e9s compos\u00e9s de photo-initiateurs cationiques et de r\u00e9sines et monom\u00e8res de soutien pr\u00e9sentent les avantages d'une anti-oxydation et d'un blocage de la polym\u00e9risation, d'un faible retrait du syst\u00e8me, ce qui peut compl\u00e9ter le syst\u00e8me de durcissement par voie radicale libre. Les applications futures des produits de durcissement cationiques ou leur utilisation mixte avec des produits de durcissement par voie radicalaire ont des perspectives de d\u00e9veloppement, de sorte que le photo-initiateur cationique est \u00e9galement l'une des orientations du d\u00e9veloppement des produits et de la technologie.<\/p>\n<h2><strong><b>Contactez-nous d\u00e8s maintenant !<\/b><\/strong><\/h2>\n<h4><strong><b>Si vous avez besoin de Price, veuillez indiquer 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\u00a0<span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"mailto:info@changhongchemical.com\">info@changhongchemical.com<\/a>\u00a0<\/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>Coating industry: I\u3001Terms and definitions photoinitiator (photoinitiator), according to GB\/T 41764-2022 \u2018Determination of the content of photoinitiators in radiation-curing coatings Gas Chromatography-Mass Spectrometry Method\u2019 in 3.1 described as: a substance that can absorb radiant&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[185],"tags":[],"class_list":["post-8558","post","type-post","status-publish","format-standard","hentry","category-photoinitiator"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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