{"id":5488,"date":"2022-08-26T14:06:49","date_gmt":"2022-08-26T14:06:49","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5488"},"modified":"2026-04-28T10:42:07","modified_gmt":"2026-04-28T10:42:07","slug":"the-principle-of-coating-matting-and-coating-matting-agent-should-have-the-characteristics","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/the-principle-of-coating-matting-and-coating-matting-agent-should-have-the-characteristics\/","title":{"rendered":"Le principe de l'enrobage et l'agent d'enrobage doivent pr\u00e9senter les caract\u00e9ristiques suivantes"},"content":{"rendered":"<h1><strong>Le principe de l'enrobage et l'agent d'enrobage doivent pr\u00e9senter les caract\u00e9ristiques suivantes<\/strong><\/h1>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>R\u00e9ponse rapide :<\/strong> Pour les sujets de mouillage, de nivellement, de d\u00e9sa\u00e9ration et de dispersion, les formulateurs comparent g\u00e9n\u00e9ralement les performances et les effets secondaires ensemble car une surcorrection d'un probl\u00e8me de surface peut facilement en cr\u00e9er un autre.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p>La brillance est l'une des propri\u00e9t\u00e9s physiques importantes du film de rev\u00eatement, exprim\u00e9e en termes de brillance. La brillance de la surface du rev\u00eatement peut \u00eatre consid\u00e9rablement r\u00e9duite gr\u00e2ce \u00e0 des substances appel\u00e9es agents de matage du rev\u00eatement, dont la plus grande quantit\u00e9 est la silice synth\u00e9tique ultrafine, suivie de la cire micronis\u00e9e, de l'aluminium, du calcium, du magn\u00e9sium et du st\u00e9arate de zinc en plus petite quantit\u00e9. En outre, l'ajout de pigments corporels, l'augmentation de la teneur en pigments, l'ajout de composants de r\u00e9sine incompl\u00e8tement compatibles et l'utilisation de m\u00e9thodes m\u00e9caniques pour rendre la surface du rev\u00eatement rugueuse ou le gaufrage de la surface peuvent \u00e9galement r\u00e9duire la brillance du film de rev\u00eatement.<\/p>\n<p>Il y a des cas o\u00f9 un film brillant est n\u00e9cessaire et d'autres o\u00f9 un film brillant n'est pas n\u00e9cessaire. L'utilisation de rev\u00eatements tr\u00e8s brillants ou peu brillants n'est pas seulement li\u00e9e \u00e0 la mode et \u00e0 l'apparence, mais aussi \u00e0 l'effet de brillance, \u00e0 la sensation au toucher, \u00e0 la r\u00e9duction des risques et \u00e0 d'autres facteurs. Pour des raisons de s\u00e9curit\u00e9, les transports en g\u00e9n\u00e9ral utilisent une peinture mate non brillante, la surface d\u00e9corative int\u00e9rieure est \u00e9galement mate ; la surface des gratte-ciel n'est g\u00e9n\u00e9ralement pas bross\u00e9e avec une peinture brillante, mais recouverte de plaques pr\u00e9peintes sur un substrat d'acier ou d'aluminium, et toutes utilisent une peinture mate pour \u00e9viter de produire des reflets dangereux qui irritent les yeux des pi\u00e9tons ou des automobilistes. L'\u00e9conomie et l'aspect pratique constituent un autre facteur important dans le choix des rev\u00eatements peu brillants. Lorsque certains substrats sont \u00e9rafl\u00e9s, l\u00e9g\u00e8rement piqu\u00e9s ou souill\u00e9s, il est difficile de couvrir ces d\u00e9fauts avec une peinture brillante, et l'utilisation de rev\u00eatements mats permet de dissimuler ces d\u00e9fauts.<\/p>\n<p>La perte de brillance \u00e0 la surface du film de rev\u00eatement est due \u00e0 la formation de minuscules fossettes \u00e0 la surface du film de rev\u00eatement s\u00e9ch\u00e9, ce qui cr\u00e9e une r\u00e9flexion diffuse de la lumi\u00e8re incidente. La formation de petites in\u00e9galit\u00e9s \u00e0 la surface du rev\u00eatement est soumise \u00e0 deux conditions : d'une part, la pr\u00e9sence d'une quantit\u00e9 suffisante de particules de taille adapt\u00e9e aux particules d'agent de matage dans le film humide ; d'autre part, le r\u00e9tr\u00e9cissement du volume au cours du processus de s\u00e9chage ou de durcissement du film de rev\u00eatement. Si cette condition n'est pas enti\u00e8rement remplie, l'effet de matage n'est pas non plus id\u00e9al. Pendant le processus de rev\u00eatement, la surface du film de rev\u00eatement qui vient d'\u00eatre appliqu\u00e9 n'est pas tr\u00e8s plate, en raison de la tension superficielle, afin de maintenir une surface minimale, elle deviendra un film humide lisse, l'utilisation d'un agent de nivellement permettant d'acc\u00e9l\u00e9rer ce processus. Avant que la surface du film de rev\u00eatement ne s\u00e8che, le niveau de brillance a tendance \u00e0 \u00eatre \u00e9lev\u00e9 en raison du solvant. Lorsque le film de rev\u00eatement s\u00e8che, la surface se r\u00e9tr\u00e9cit continuellement en raison de l'\u00e9vaporation du solvant, ce qui entra\u00eene la formation de tr\u00e8s petites bosses \u00e0 la surface des particules de l'agent de nivellement, qui sont uniform\u00e9ment r\u00e9parties entre elles. La minuscule bosse form\u00e9e \u00e0 la surface du rev\u00eatement \u00e0 l'aide de l'agent de matage est optiquement in\u00e9gale et invisible \u00e0 l'\u0153il nu. Par cons\u00e9quent, lorsque la lumi\u00e8re est irradi\u00e9e vers la surface du rev\u00eatement sous un certain angle, si sa surface est proche du plan optique, elle provoquera une r\u00e9flexion totale et son angle de r\u00e9flexion sera \u00e9gal \u00e0 l'angle d'incidence, et la brillance sera \u00e9lev\u00e9e ; lorsque la lumi\u00e8re incidente atteint la surface de la petite bosse, \u00e0 mesure que la rugosit\u00e9 moyenne de la surface du rev\u00eatement augmente, la lumi\u00e8re diffus\u00e9e remplacera progressivement la lumi\u00e8re r\u00e9fl\u00e9chie, de sorte que sa brillance continuera \u00e0 diminuer, et un rev\u00eatement sans lumi\u00e8re finira par se former.<\/p>\n<p>Les vernis traditionnels \u00e0 base de solvants, dont la teneur en mati\u00e8res volatiles est comprise entre 30%-80%, pr\u00e9sentent un r\u00e9tr\u00e9cissement \u00e9vident du film de vernis au cours du processus de s\u00e9chage ou de durcissement en raison de l'\u00e9vaporation des mati\u00e8res volatiles, ce qui facilite le matage ; les vernis \u00e0 base d'eau, dont l'eau sert de dispersant, pr\u00e9sentent un r\u00e9tr\u00e9cissement \u00e9vident du film de vernis au cours du processus de s\u00e9chage ou de durcissement en raison de l'\u00e9vaporation de l'eau, ce qui facilite \u00e9galement le matage. Pour les rev\u00eatements \u00e0 haute teneur en solides, la teneur en solides est g\u00e9n\u00e9ralement de 70%-90%, la difficult\u00e9 de matage est relativement accrue ; les rev\u00eatements durcis aux UV, teneur en solides de 100%, le retrait de durcissement est inf\u00e9rieur \u00e0 10%, le matage est difficile ; et les rev\u00eatements en poudre sans volatilisation organique, teneur en solides de 100%, le matage est le plus difficile. Pour ces rev\u00eatements, lors du processus de s\u00e9chage ou de durcissement, le retrait du film de rev\u00eatement est tr\u00e8s faible, voire inexistant, de sorte qu'il est n\u00e9cessaire de former une petite bosse \u00e0 la surface du rev\u00eatement, en utilisant g\u00e9n\u00e9ralement un agent de matage.<\/p>\n<p>Le rev\u00eatement \u00e0 l'aide d'un agent de matage doit pr\u00e9senter les caract\u00e9ristiques suivantes : 1, forte inertie chimique, ne r\u00e9agit avec aucun composant du film de rev\u00eatement ; 2, la transparence de l'interf\u00e9rence du film de rev\u00eatement est faible, l'impact de la rh\u00e9ologie du rev\u00eatement est faible ; 3, bonne performance de matage, une faible addition peut produire une forte performance de matage ; 4, dans le rev\u00eatement liquide, bonne suspension, long stockage, ne produira pas de pr\u00e9cipitations dures ; 5, les propri\u00e9t\u00e9s m\u00e9caniques du film de rev\u00eatement et les propri\u00e9t\u00e9s chimiques de faible impact, et Il est facile \u00e0 disperser, ne pollue pas l'environnement, et ne causera pas de dommages au corps humain.<\/p>\n<p>&nbsp;<\/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>Gloss is one of the important physical properties of the coating film, expressed in terms of gloss. Can make the coating surface gloss significantly reduced substances called coating matting agent,<\/p>","protected":false},"author":1,"featured_media":5490,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5488","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>The principle of coating matting and coating matting agent should have the characteristics - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Gloss is one of the important physical properties of the coating film, expressed in terms of gloss. 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