{"id":11033,"date":"2018-04-01T00:56:44","date_gmt":"2018-03-31T22:56:44","guid":{"rendered":"https:\/\/mcrtecresa.com?p=11033"},"modified":"2025-10-22T13:14:57","modified_gmt":"2025-10-22T11:14:57","slug":"peintures-intumescents","status":"publish","type":"post","link":"https:\/\/mcrtecresa.com\/fr\/blog\/peintures-intumescents","title":{"rendered":"Peintures Intumescents"},"content":{"rendered":"<p>En ce qui concerne la protection passif et plus particuli\u00e8rement \u00e0 la protection des structures m\u00e9talliques (l\u2019acier perd la moiti\u00e9 de sa force \u00e0 500 \u00b0 C), nous devons prot\u00e9ger pendant la dur\u00e9e indiqu\u00e9e par les r\u00e8glements pour l&rsquo;\u00e9vacuation des personnes, la protection de la propri\u00e9t\u00e9 et pour faciliter l\u2019entre aux forces de s\u00e9curit\u00e9 dans le b\u00e2timent pour \u00e9teindre le feu sans que la structure de support s\u2019effondre.<\/p>\n<p>Selon leur comportement, il y a deux types de protections:<\/p>\n<p>&#8211; Les barri\u00e8res avec des \u00e9l\u00e9ments non-r\u00e9actifs: Mortiers ou panneaux.<\/p>\n<p>&#8211; Les barri\u00e8res avec des \u00e9l\u00e9ments r\u00e9actifs:\u00a0<strong>Peintures Intumescents.<\/strong><\/p>\n<p>La diff\u00e9rence entre ces deux types est que le premier prot\u00e8ge le feu sans aucune alt\u00e9ration significative de ces mat\u00e9riaux. Dans le cas de la peinture intumescente, en pr\u00e9sence de temp\u00e9ratures \u00e9lev\u00e9es, il y a une r\u00e9action chimique qui lib\u00e8re une mousse avec des \u00e9l\u00e9ments riches en carbone ce qui donne l&rsquo;isolation thermique n\u00e9cessaire pendant le temps n\u00e9cessaire. Cette \u00e9paisseur d\u00e9pend de la massivit\u00e9 du profil, l\u2019exposition au feu et du type de profil qui peut \u00eatre ouvert \u00ab\u00a0I\u00a0\u00bb ou \u00ab\u00a0H\u00a0\u00bb ou de la surface du tube de type ferm\u00e9 carr\u00e9e ou circulaire (ces derniers ont un comportement au feu pire que le premier).<\/p>\n<p>Il y a quelques ann\u00e9es, la proc\u00e9dure d&rsquo;essai pour les deux types de protection \u00e9tait le m\u00eame, la norme UNE ENV 13381-4\u00a0<em>\u00ab\u00a0Tests pour d\u00e9terminer la contribution \u00e0 la r\u00e9sistance au feu des \u00e9l\u00e9ments structuraux. Partie 4: Protection appliqu\u00e9e \u00e0 l&rsquo;acier \u00ab\u00a0<\/em>. Mais l&rsquo;exp\u00e9rience r\u00e9elle a constat\u00e9 que ce type de r\u00e9actifs de rev\u00eatement ont bessoin d&rsquo;une l\u00e9gislation\u00a0plus appropri\u00e9e \u00e0 leur situation particuli\u00e8re de test sp\u00e9ciale car ils commencent g\u00e9n\u00e9ralement \u00e0 r\u00e9agir \u00e0 une temp\u00e9rature de 200 \u00b0 C, tandis que les protections non-r\u00e9actives r\u00e9agissent apr\u00e8s le d\u00e9but. Voil\u00e0 pourquoi, depuis 2011, la norme en vigueur pour les essais de r\u00e9sistance au feu de protection r\u00e9actives est l&rsquo;UNE ENV 13381-8\u00a0<em>\u00ab\u00a0pour d\u00e9terminer la contribution \u00e0 la r\u00e9sistance au feu des \u00e9l\u00e9ments structuraux. Partie 8: Protection des r\u00e9actif appliqu\u00e9es sur les \u00e9l\u00e9ments en acier \u00ab\u00a0.<\/em>\u00a0Ceci est important de choissir\u00a0une bonne marque de peinture intumescente, car certains sont encore test\u00e9s selon les r\u00e8gles anciennes et l&rsquo;approbation n&rsquo;est pas valide.<\/p>\n<p>Un autre aspect important est que non pas toutes les amorces sont compatibles avec la peinture intumescente et il peut y avoir des incompatibilit\u00e9s et des nombreux probl\u00e8mes.<\/p>\n<p>Enfin, nous devons aussi savoir que la peinture intumescente est un produit avec des pores ouverts qui absorbe l&rsquo;humidit\u00e9 par capillarit\u00e9 en perdant ses propri\u00e9t\u00e9s intumescentes. Il est essentiel de le prot\u00e9ger de l&rsquo;humidit\u00e9 avec une \u00e9mail scellant compatible, ce qui lui donne une meilleure apparence et duret\u00e9 \u00e0 la surface.<\/p>\n<p><strong>Mercor Tecresa a d\u00e9velopp\u00e9 une peinture intumescente \u00e0 base d&rsquo;eau appel\u00e9 Teclack.<\/strong>\u00a0Nous voudrons souligner quelques de ses avantages par rapport \u00e0 d&rsquo;autres peintures intumescentes.<\/p>\n<p>&#8211; Permet une protection avec des profils de haute massivit\u00e9 (jusqu&rsquo;\u00e0 440 m-1) tandis que d&rsquo;autres obtiennent habituellement un maximum de 300-340 m-1.<\/p>\n<p>&#8211; Ils ont un pourcentage \u00e9lev\u00e9 de mati\u00e8res solides (environ 70%) qui offre des excellentes performances par m\u00e8tre carr\u00e9.<\/p>\n<p>&#8211; Il offre une protection contre incendies de 90 minutes avec la moiti\u00e9 d\u2019\u00e9paisse que des autres peinture intumescentes plus comp\u00e9titives.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>En ce qui concerne la protection passif et plus particuli\u00e8rement \u00e0 la protection des structures m\u00e9talliques (l\u2019acier perd la moiti\u00e9 de sa force \u00e0 500 \u00b0 C), nous devons prot\u00e9ger&#8230;<\/p>\n","protected":false},"author":16,"featured_media":8344,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[171],"tags":[],"class_list":["post-11033","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-produits-et-services"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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