{"id":5101,"date":"2022-03-03T07:00:30","date_gmt":"2022-03-03T07:00:30","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=5101"},"modified":"2026-04-28T10:41:57","modified_gmt":"2026-04-28T10:41:57","slug":"notes-on-paint-testing-and-analysis","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/notes-on-paint-testing-and-analysis\/","title":{"rendered":"Notes sur les essais et l'analyse des peintures !"},"content":{"rendered":"<h1><strong>Notes sur les essais et l'analyse des peintures !<\/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>Q : Quelles sont les cat\u00e9gories de peintures ?<\/p>\n<p>R : Selon la forme, on distingue la peinture solide et la peinture liquide ; selon l'utilisation, on distingue la peinture industrielle et la peinture civile, et la peinture industrielle se divise en peinture pour panneaux de couleur, peinture automobile, peinture architecturale, peinture pour bois, peinture pour peau d'avion, etc. ; selon l'effet, on distingue la peinture anticorrosion, la peinture antirouille, la peinture imperm\u00e9able, la peinture hydratante, la peinture \u00e9lastique, la peinture isolante, la peinture antisalissure.<\/p>\n<p>Q : Quel est l'objectif de l'analyse et des essais de peinture ?<\/p>\n<p>R : La performance de la peinture d\u00e9termine la qualit\u00e9 de la peinture et l'utilisation de la peinture, ce qui pr\u00e9sente de multiples facettes. Afin d'\u00e9valuer les performances des rev\u00eatements sous diff\u00e9rents angles, de nombreuses m\u00e9thodes d'essai ont \u00e9t\u00e9 mises au point, notamment l'essai des performances du rev\u00eatement lui-m\u00eame et l'essai des performances du film de rev\u00eatement sous deux aspects.<\/p>\n<p>Q : Quelle est l'importance des essais de performance des rev\u00eatements ?<\/p>\n<p>R : L'analyse et l'essai des rev\u00eatements constituent une partie importante et indispensable du processus de production et d'utilisation des rev\u00eatements, et sont la base principale du d\u00e9veloppement des indicateurs techniques des produits de rev\u00eatement, ainsi qu'une m\u00e9thode sp\u00e9cifique utilis\u00e9e pour \u00e9valuer la performance et la qualit\u00e9 des rev\u00eatements.<\/p>\n<p>1\u3001Le test peut fournir des donn\u00e9es pour la conception de la formule et les conditions de traitement des produits s\u00e9lectionn\u00e9s.<\/p>\n<p>2\u3001En analysant et en testant la peinture, il peut refl\u00e9ter correctement la qualit\u00e9 du produit de peinture et contr\u00f4ler la qualit\u00e9 du produit.<\/p>\n<p>3\u3001Au moyen des donn\u00e9es obtenues lors des essais, la recherche de la th\u00e9orie de base peut \u00eatre effectu\u00e9e pour d\u00e9couvrir la relation entre les composants et la performance, de mani\u00e8re \u00e0 d\u00e9couvrir les probl\u00e8mes du produit original et l'orientation de l'am\u00e9lioration, et \u00e0 fournir la base pour le d\u00e9veloppement de nouveaux produits.<\/p>\n<p>Q : Quels sont les indicateurs techniques courants pour l'analyse des rev\u00eatements et les tests ?<\/p>\n<p>R : Les indicateurs de l'\u00e9tat physique du rev\u00eatement comprennent la densit\u00e9, la viscosit\u00e9, etc. Les indicateurs des propri\u00e9t\u00e9s optiques du film de rev\u00eatement comprennent la brillance, la couleur, etc. Les indicateurs des propri\u00e9t\u00e9s m\u00e9caniques comprennent la duret\u00e9, la flexibilit\u00e9, etc. En outre, la r\u00e9sistance aux intemp\u00e9ries et aux r\u00e9actifs chimiques du rev\u00eatement sont \u00e9galement des indicateurs techniques tr\u00e8s importants pour mesurer les performances du rev\u00eatement.<\/p>\n<p>Q : Quelle est la duret\u00e9 du film de rev\u00eatement ?<\/p>\n<p>R : La duret\u00e9 du film de rev\u00eatement fait r\u00e9f\u00e9rence \u00e0 la solidit\u00e9 du film de rev\u00eatement apr\u00e8s s\u00e9chage, qui est utilis\u00e9e pour d\u00e9terminer le degr\u00e9 de dommage lorsqu'il est soumis \u00e0 un frottement externe et \u00e0 une collision. Il existe de nombreuses m\u00e9thodes pour d\u00e9terminer la duret\u00e9 du film de rev\u00eatement, la plus couramment utilis\u00e9e \u00e9tant la m\u00e9thode de duret\u00e9 au crayon. La m\u00e9thode de duret\u00e9 au crayon est une m\u00e9thode de mesure de la duret\u00e9 d'un film de rev\u00eatement qui consiste \u00e0 rayer le film avec un crayon dont la marque de duret\u00e9 est connue et \u00e0 utiliser la marque de duret\u00e9 du crayon pour indiquer la duret\u00e9 du film.<\/p>\n<p>Q : Quelles sont les m\u00e9thodes d'essai d'adh\u00e9rence des films ?<\/p>\n<p>R : L'adh\u00e9rence du film fait r\u00e9f\u00e9rence \u00e0 sa capacit\u00e9 \u00e0 adh\u00e9rer fermement \u00e0 la surface de l'objet \u00e0 recouvrir. Si l'adh\u00e9rence du produit est mauvaise, la surface s'\u00e9caille facilement et perd son effet protecteur et d\u00e9coratif. Les m\u00e9thodes de d\u00e9termination de l'adh\u00e9rence sont la m\u00e9thode du tra\u00e7age, la m\u00e9thode du tra\u00e7age, la m\u00e9thode de la torsion, la m\u00e9thode de la rayure, la m\u00e9thode de l'adh\u00e9rence du ruban et la m\u00e9thode de l'essai de pelage.<\/p>\n<p>La m\u00e9thode par rayage est une m\u00e9thode d'essai permettant d'\u00e9valuer la r\u00e9sistance du rev\u00eatement au d\u00e9tachement du substrat lorsque le rev\u00eatement est d\u00e9coup\u00e9 pour p\u00e9n\u00e9trer dans le substrat avec un quadrillage \u00e0 angle droit. La force d'adh\u00e9rence mesur\u00e9e par la m\u00e9thode d'arrachement est la force n\u00e9cessaire pour d\u00e9terminer les dommages caus\u00e9s par l'adh\u00e9rence entre les rev\u00eatements ou entre les rev\u00eatements et les substrats en appliquant une traction verticale uniforme sur la surface adh\u00e9sive de l'\u00e9chantillon \u00e0 une vitesse sp\u00e9cifi\u00e9e.<\/p>\n<p>Q : Quelles sont les m\u00e9thodes pour d\u00e9terminer l'\u00e9paisseur du film de rev\u00eatement ?<\/p>\n<p>R : L'\u00e9paisseur du film de rev\u00eatement affecte les performances du film de rev\u00eatement, en particulier les propri\u00e9t\u00e9s physiques et m\u00e9caniques du film de rev\u00eatement qui sont le plus manifestement affect\u00e9es par l'\u00e9paisseur, de sorte que la d\u00e9termination des performances du film de rev\u00eatement doit \u00eatre test\u00e9e dans la plage d'\u00e9paisseur sp\u00e9cifi\u00e9e. Il existe de nombreuses m\u00e9thodes pour d\u00e9terminer l'\u00e9paisseur d'un film de rev\u00eatement : l'\u00e9paisseur d'un film de rev\u00eatement sur une plaque de verre peut \u00eatre mesur\u00e9e \u00e0 l'aide d'un microm\u00e8tre, l'\u00e9paisseur d'un film de rev\u00eatement sur une plaque d'acier peut \u00eatre mesur\u00e9e \u00e0 l'aide d'une jauge d'\u00e9paisseur non magn\u00e9tique et l'\u00e9paisseur d'un rev\u00eatement plastique peut \u00eatre mesur\u00e9e \u00e0 l'aide d'une m\u00e9thode ultrasonique.<\/p>\n<p>Q : Quelles sont les normes communes d'essai des rev\u00eatements ?<\/p>\n<p>R : Les normes d'essai et les exigences varient d'un pays \u00e0 l'autre. Les normes les plus courantes sont ISO, ATSM, GB, JIS et autres. A titre d'exemple.<\/p>\n<p>Les normes courantes pour les essais de duret\u00e9 sont les suivantes : ASTM D3363, ISO 15184 , GB\/T 6739, JIS K5600-5-4.<\/p>\n<p>Les normes courantes pour les tests d'\u00e9paisseur sont : ASTM D7091, ASTM D1186, ISO 2808, ISO 2360.<\/p>\n<p>Les normes courantes pour les tests de r\u00e9sistance aux chocs sont les suivantes : ASTM D2794, ISO 6272, GB\/T 20624, JIS K5600.<\/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\/photoinitiator-184-cas-947-19-3\/\">CHLUMINIT 184<\/a>:<\/strong> A classic free-radical benchmark for fast surface cure in many UV systems.<\/li>\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<\/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>Q: What are the categories of paints? A: According to the form, it can be divided into solid paint and liquid paint; according to the use, it is divided into<\/p>","protected":false},"author":1,"featured_media":5102,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[],"class_list":["post-5101","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>Notes on paint testing and analysis! - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"Q: What are the categories of paints? 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A: According to the form, it can be divided into solid paint and liquid paint; according to the use, it is divided...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/longchangchemical.com\/fr\/notes-on-paint-testing-and-analysis\/","og_locale":"fr_FR","og_type":"article","og_title":"Notes on paint testing and analysis! - Longchang Chemical","og_description":"Q: What are the categories of paints? 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