{"id":5088,"date":"2019-03-14T12:57:00","date_gmt":"2019-03-14T11:57:00","guid":{"rendered":"http:\/\/www.vernicifirewall.it\/le-vernici-ignifughe-e-le-vernici-intumescenti\/"},"modified":"2019-04-16T10:37:16","modified_gmt":"2019-04-16T08:37:16","slug":"le-vernici-ignifughe-e-le-vernici-intumescenti","status":"publish","type":"page","link":"https:\/\/www.vernicifirewall.it\/fr\/le-vernici-ignifughe-e-le-vernici-intumescenti\/","title":{"rendered":"Vernis ignifuges et intumescents"},"content":{"rendered":"[mk_page_section bg_image=”http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/vernici-ignifughe-intumescenti.jpg” bg_position=”left center” bg_repeat=”no-repeat” bg_stretch=”true” enable_3d=”true” padding_top=”200″ padding_bottom=”200″ sidebar=”sidebar-1″][vc_column width=”1\/2″][vc_column_text el_class=”white rennertitle” css=”.vc_custom_1554661676192{margin-bottom: 0px !important;}”]La limitation
\nde la propagation
\ndu feu[\/vc_column_text][vc_column_text el_class=”white rennerp” css=”.vc_custom_1554661684282{margin-bottom: 0px !important;}”]Les vernis ignifuges et intumescents limitent la propagation du feu, de la chaleur et des fum\u00e9es \u00e0 partir de mat\u00e9riaux combustibles ou de structure, pr\u00e9sents dans les endroits soumis \u00e0 la r\u00e9glementation anti-incendie. Ces vernis sont utilis\u00e9s dans des environnements tr\u00e8s fr\u00e9quent\u00e9s, tels que les centres commerciaux, les \u00e9tablissements d\u2019h\u00e9bergement, les \u00e9coles ou les cin\u00e9mas. Ces lieux sont tenus de d\u00e9livrer un Certificat de Pr\u00e9vention des Incendies (CPI en italien) pour les mat\u00e9riaux combustibles, tels que les meubles et les \u00e9l\u00e9ments de structure (par exemple les poutres en bois, en acier ou en b\u00e9ton).[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][\/vc_column][\/mk_page_section][mk_page_section bg_image_portrait=”http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/vernici-intumescenti.jpg” bg_position=”right center” bg_repeat=”no-repeat” bg_stretch=”true” enable_3d=”true” bg_video=”yes” mp4=”http:\/\/www.renneritalia.com\/wp-content\/uploads\/video\/shutterstock_v2154200.mp4″ webm=”http:\/\/www.renneritalia.com\/wp-content\/uploads\/video\/shutterstock_v2154200.webm” ogv=”http:\/\/www.renneritalia.com\/wp-content\/uploads\/video\/shutterstock_v2154200.ogv” poster_image=”http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/vernici-intumescenti.jpg” padding_top=”200″ padding_bottom=”200″ sidebar=”sidebar-1″][vc_column width=”1\/2″][\/vc_column][vc_column width=”1\/2″][vc_column_text el_class=”white rennertitle” css=”.vc_custom_1554661698216{margin-bottom: 0px !important;}”]La diff\u00e9rence
\nentre les vernis ignifuges
\net intumescents[\/vc_column_text][vc_column_text el_class=”white rennerp” css=”.vc_custom_1555403724267{margin-bottom: 0px !important;}”]La composition chimique est la diff\u00e9rence entre les vernis ignifuges et les vernis intumescents. Les premiers contiennent des additifs ignifuges ou anti-flamme (du latin ignis, feu et fugo, “qui laisse s’\u00e9chapper”); ces derniers sont compos\u00e9s d’additifs intumescents (du latin intumescens, participe pr\u00e9sent d’intum\u011bscere, ou “gonfler”).<\/p>\n

Dans le cas de temp\u00e9ratures entre 200\u00b0C et 300\u00b0C, les additifs ignifuges lib\u00e8rent des substances qui inhibent l’oxyg\u00e8ne: ils d\u00e9veloppent du dioxyde de carbone ou cr\u00e9ent de la vapeur d’eau, en abaissant efficacement la temp\u00e9rature de combustion. Entre 300\u00b0C et 400\u00b0C, les vernis ignifuges lancent le processus de cristallisation. Essentiellement, une couche vitrifi\u00e9e non inflammable cr\u00e9e une barri\u00e8re pour le bois.[\/vc_column_text][\/vc_column][\/mk_page_section][mk_page_section bg_image=”http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/vernici-ignifughe.jpg” bg_image_portrait=”http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/bk_cicli_mobile.jpg” bg_position=”left center” bg_repeat=”no-repeat” bg_stretch=”true” enable_3d=”true” padding_top=”200″ padding_bottom=”200″ sidebar=”sidebar-1″][vc_column width=”1\/2″][vc_column_text el_class=”white rennertitle” css=”.vc_custom_1554661725570{margin-bottom: 0px !important;}”]Barri\u00e8re de protection
\net isolation[\/vc_column_text][vc_column_text el_class=”white rennerp” css=”.vc_custom_1554661740868{margin-bottom: 0px !important;}”]Les additifs intumescents r\u00e9agissent \u00e0 une temp\u00e9rature de 200\u00b0C en gonflant le film du vernis. Ils cr\u00e9ent ainsi une barri\u00e8re protectrice et isolante, en retardant \u00e0 la fois la combustion et l\u2019\u00e9l\u00e9vation de la temp\u00e9rature. Normalement, les additifs ignifuges sont utilis\u00e9s dans des syst\u00e8mes appliqu\u00e9s sur les meubles. Alors que les additifs intumescents les plus r\u00e9actifs, qui ne sont pas tr\u00e8s transparents, sont utilis\u00e9s dans les peintures, qui sont utilis\u00e9es pour peindre des structures portantent.
\nPar cons\u00e9quent, un vernis ignifuge, certifi\u00e9 Classe 1 de R\u00e9action au Feu, contiendra des additifs ignifuges et sera plus performant en ce qui concerne la r\u00e9sistance chimique et la r\u00e9sistance \u00e0 l’abrasion, tandis qu’un vernis intumescent, certifi\u00e9 en Classe de R\u00e9sistance au Feu, sera plus sensible aux humidit\u00e9 et au stress.[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][\/vc_column][\/mk_page_section][mk_page_section bg_image=”http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/smoke-1.jpg” bg_position=”center top” bg_repeat=”no-repeat” bg_stretch=”true” enable_3d=”true” padding_top=”100″ padding_bottom=”200″ sidebar=”sidebar-1″][vc_column width=”1\/6″][\/vc_column][vc_column width=”2\/3″][vc_video host=”self_hosted” mp4=”http:\/\/vernicifirewall.it\/wp-content\/uploads\/video\/BASSI_IT.mp4″ poster_image=”http:\/\/vernicifirewall.it\/wp-content\/uploads\/video\/intervista-bassi.jpg” custom_thumbnail=”true” thumbnail_image=”4302″][mk_padding_divider][\/vc_column][vc_column width=”1\/6″][\/vc_column][\/mk_page_section]\n","protected":false},"excerpt":{"rendered":"

[mk_page_section bg_image=”http:\/\/www.vernicifirewall.it\/wp-content\/uploads\/2019\/03\/vernici-ignifughe-intumescenti.jpg” bg_position=”left center” bg_repeat=”no-repeat” bg_stretch=”true” enable_3d=”true” padding_top=”200″ padding_bottom=”200″ sidebar=”sidebar-1″][vc_column width=”1\/2″][vc_column_text el_class=”white rennertitle” css=”.vc_custom_1554661676192{margin-bottom: 0px !important;}”]La limitation de la propagation du feu[\/vc_column_text][vc_column_text el_class=”white rennerp” css=”.vc_custom_1554661684282{margin-bottom: 0px !important;}”]Les vernis ignifuges et intumescents limitent la propagation du feu, de la chaleur et des fum\u00e9es \u00e0 partir de mat\u00e9riaux combustibles ou de structure, pr\u00e9sents dans les endroits soumis […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5088","page","type-page","status-publish","hentry"],"yoast_head":"\nVernis ignifuges et intumescents - 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