{"id":6193,"date":"2023-07-26T02:28:28","date_gmt":"2023-07-26T02:28:28","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=6193"},"modified":"2026-04-28T10:42:19","modified_gmt":"2026-04-28T10:42:19","slug":"how-do-leveling-agents-work","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/how-do-leveling-agents-work\/","title":{"rendered":"Comment fonctionnent les agents de nivellement ?"},"content":{"rendered":"<h1><strong>Comment fonctionnent les agents de nivellement ?<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>R\u00e9ponse rapide :<\/strong> A practical additive decision starts with the exact defect: foam, poor wetting, craters, haze, or instability. The best product is usually the one that solves that defect with the safest compatibility window.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>1. Vue d'ensemble du nivellement<\/p>\n<p>After the construction of paint, there is a flow and drying film-forming process, and then gradually form a flat, smooth, uniform coating film. Whether the coating film can achieve the characteristics of flat and smooth is called leveling. In the actual construction process of the coating, the film defects that often appear are orange peel, fish-eye, shrinkage, pinhole, shrinkage, Benedict swirl, air sensitivity and due to poor leveling, brush marks when brushing, roller coating roller marks are known as poor leveling, the generation of these phenomena reduces the decorative and protective function of the coating. There are many factors affecting the leveling of coatings, such as solvent volatility gradient and solubility properties, surface tension of coatings, wet film thickness and surface tension gradient, rheology of coatings, construction process and environment, etc., of which the most important factors are the surface tension of coatings, surface tension gradient generated by the wet film in the film-forming process and the surface tension homogenization of the surface layer of the wet film. To improve the leveling of coatings, it is necessary to consider adjusting the formulation and adding suitable additives. In practice, <a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumile3345-silicone-leveling-agents-wetting-leveling-agents\/\">CHLUMILE 3345 Leveling Agent<\/a> et <a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumile3033-organic-silicone-leveling-agent-automotive-paint-leveling-agent\/\">CHLUMILE 3033 Leveling Agent<\/a> are often compared so that the coatings have suitable surface tension and the ability to reduce the surface tension gradient.<br \/>\n2. R\u00f4le de l'agent de nivellement<br \/>\nApr\u00e8s le mouillage du substrat, les additifs qui contr\u00f4lent l'\u00e9coulement du rev\u00eatement jusqu'au nivellement final sont appel\u00e9s agents de nivellement, qui peuvent r\u00e9soudre les probl\u00e8mes suivants<br \/>\n3. Les principaux facteurs d'influence du nivellement<br \/>\n3.1. Gradient de tension superficielle - interface liquide-air<br \/>\n\u25cf Les gradients de tension superficielle dans les couches internes et externes entra\u00eenent des tourbillons de Benadryl.<br \/>\n\u25cf L'\u00e9limination du gradient de tension superficielle est un \u00e9l\u00e9ment essentiel pour obtenir une surface plane.<br \/>\n3.2. Tension superficielle -- interface liquide-solide<br \/>\nTension de surface inf\u00e9rieure \u00e0 celle du substrat, de sorte que le rev\u00eatement pr\u00e9sente une meilleure mouillabilit\u00e9 du substrat<br \/>\n\u25cf Tension superficielle plus faible du rev\u00eatement, ce qui entra\u00eene un meilleur nivellement du liquide par ondes longues.<br \/>\n4. Facteurs influen\u00e7ant la vitesse de nivellement<br \/>\n\u25cf Plus la viscosit\u00e9 est \u00e9lev\u00e9e, plus le nivellement est lent.<br \/>\nPlus le film est \u00e9pais, plus le nivellement est rapide.<br \/>\nPlus la tension superficielle est \u00e9lev\u00e9e, plus le nivellement est rapide.<br \/>\n5. M\u00e9canismes et propri\u00e9t\u00e9s des diff\u00e9rents agents de nivellement<br \/>\n5. 1) \u00c9liminer le gradient de tension superficielle<br \/>\n5. 2 R\u00e9duire la tension superficielle du syst\u00e8me.<br \/>\n\u25cf Organosilicones.<br \/>\n-R\u00e9duction significative de la tension superficielle<br \/>\n\u25cf Organosilicones : - R\u00e9duction significative de la tension superficielle - Bonnes propri\u00e9t\u00e9s de migration \u00e9liminant le gradient de tension superficielle.<br \/>\n\u25cf Sans silicone et sans fluor : - Pas de r\u00e9duction significative de la tension superficielle.<br \/>\n-Pas de r\u00e9duction significative de la tension superficielle<br \/>\n- Pas de migration de surface<br \/>\n- Orientation dans le rev\u00eatement, ajustement de l'homog\u00e9n\u00e9it\u00e9 de la tension superficielle locale<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>Comment les acheteurs \u00e9valuent-ils g\u00e9n\u00e9ralement les additifs pour rev\u00eatements et encres<\/h2>\n<p>La s\u00e9lection additive est g\u00e9n\u00e9ralement plus efficace lorsque l'\u00e9quipe d\u00e9finit d'abord le d\u00e9faut, puis examine la compatibilit\u00e9, la plage de dosage et le stade du processus. C'est souvent beaucoup plus fiable que de choisir uniquement par famille de chimie ou par un r\u00e9sultat de laboratoire unique et spectaculaire.<\/p>\n<ul>\n<li><strong>Commencez par le d\u00e9faut, pas par le nom de l'additif :<\/strong> la perte due au mouillage, le crat\u00e8re, la micro-mousse et l'instabilit\u00e9 n\u00e9cessitent souvent des solutions diff\u00e9rentes, m\u00eame au sein de la m\u00eame formule.<\/li>\n<li><strong>V\u00e9rifier la compatibilit\u00e9 \u00e0 la posologie pr\u00e9vue :<\/strong> L'additif le plus performant peut toujours \u00eatre le mauvais choix commercial s'il r\u00e9duit trop la fen\u00eatre de proc\u00e9d\u00e9.<\/li>\n<li><strong>Examiner le stade d'utilisation :<\/strong> Certains produits sont plus utiles pendant la mouture, tandis que d'autres sont plus importants pendant la phase de rel\u00e2chement, de remplissage ou d'application finale.<\/li>\n<li><strong>\u00c9quilibrer le cure ou la qualit\u00e9 du film avec le contr\u00f4le des d\u00e9fauts<\/strong> le bon additif corrige le probl\u00e8me sans sacrifier l'adh\u00e9rence, la brillance ou l'apparence.<\/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\/chlumiaf-094\/\">CHLUMIAF 094<\/a>:<\/strong> Un r\u00e9f\u00e9rence anti-mousse \u00e9quilibr\u00e9 pour les rev\u00eatements \u00e0 base d'eau et de nombreux \u00e9crans de contr\u00f4le de mousse g\u00e9n\u00e9raux.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-3062\/\">CHLUMIAF 3062<\/a>:<\/strong> Utile lorsque la compatibilit\u00e9 de l'encre d'impression et de l'encre UV est importante dans le tamis anti-mousse.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiaf-3037\/\">CHLUMIAF 3037<\/a>:<\/strong> Une option de d\u00e9sa\u00e9ration de processus plus puissante lorsque la mousse persistante survit \u00e0 des conditions plus difficiles.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/chlumiwe-3280\/\">CHLUMIWE 3280<\/a>:<\/strong> Un agent mouillant de r\u00e9f\u00e9rence puissant pour les encres, les rev\u00eatements et le mouillage des substrats difficiles.<\/li>\n<\/ul>\n<h3>FAQ pour les acheteurs et les formulateurs<\/h3>\n<p><strong>Pourquoi un additif qui semble puissant dans une \u00e9prouvette \u00e9choue-t-il parfois en production ?<\/strong><br \/>Parce que le cisaillement, la temp\u00e9rature, le substrat et la formule compl\u00e8te peuvent tous modifier la fa\u00e7on dont l'additif se comporte dans des conditions de proc\u00e9d\u00e9 r\u00e9elles.<\/p>\n<p><strong>L'additif le plus agressif doit-il toujours \u00eatre pr\u00e9f\u00e9r\u00e9 ?<\/strong><br \/>Pas habituellement. Le meilleur additif est celui qui r\u00e9sout le d\u00e9faut r\u00e9el tout en pr\u00e9servant la fen\u00eatre d'exploitation s\u00fbre la plus large.<\/p>\n<p><!-- lc-commercial-end --><\/p>","protected":false},"excerpt":{"rendered":"<p>1. Overview of leveling After the construction of paint, there is a flow and drying film-forming process, and then gradually form a flat, smooth, uniform coating film. Whether the coating<\/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-6193","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>How do leveling agents work? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"1. 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