{"id":14751,"date":"2019-12-16T18:06:47","date_gmt":"2019-12-16T17:06:47","guid":{"rendered":"https:\/\/isve.com\/protection-du-bois-employe-a-lexterieur\/"},"modified":"2025-04-15T12:00:56","modified_gmt":"2025-04-15T10:00:56","slug":"protection-du-bois-employe-a-lexterieur","status":"publish","type":"page","link":"https:\/\/isve.com\/fr\/equipements-traitement-bois\/protection-du-bois-employe-a-lexterieur\/","title":{"rendered":"Protection du bois employ\u00e8 \u00e0 l’\u00e9xterieur"},"content":{"rendered":"

Protection complete du bois des agents de degradation grace \u00e0 l’utilisation de la technologie vide-pression<\/strong><\/h2>\n

Les installations d’impr\u00e9gnation IMV-VP sont indiqu\u00e9es pour le traitement des \u00e9l\u00e9ments soumis aux classes de risque trois, quatre et cinq. <\/strong><\/h3>\n

La conformation naturelle du bois<\/strong> en fait un mat\u00e9riel ad\u00e9quat pour l’utilisation \u00e0 l’ext\u00e9rieur.
\nSa composition (20-30% de lignine, 40-50% de cellulose, 20-24% de hydrates de carbone) l’expose \u00e0 des “agents de d\u00e9gradation<\/strong>” dont l’action s’amorce dans des conditions d’humidit\u00e9 ambiante \u00e9lev\u00e9e et \u00e0 une temp\u00e9rature comprise entre 10 et 40\u00b0C.\u00a0Champignons, moisissures et bact\u00e9ries<\/strong>\u00a0trouvent un terrain propice pour leur d\u00e9veloppement, tandis que les rayons ultraviolets<\/strong> pr\u00e9sents dans la lumi\u00e8re solaire d\u00e9composent la lignine par voie photochimique, en la rendant soluble dans l’eau<\/strong>.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

D\u00e9gradation du bois par les rayons UV<\/strong><\/p>\n

 <\/p>\n

La seule fa\u00e7on pour combattre efficacement<\/strong> l’action des ennemis du bois<\/strong>\u00a0est d’avoir recours \u00e0 l’aide que la chimie moderne<\/strong> peut nous offrir.<\/p>\n

En effet un bon insecticide<\/strong> et un produit fongicide<\/strong>, s’ils sont appliqu\u00e9s en quantit\u00e9 suffisante et de fa\u00e7on qui int\u00e9resse aussi les couches les plus internes du bois, pr\u00e9viennent pendant plusieurs ann\u00e9es<\/strong> l’attaque des micro-organismes et des insectes. Autant le produit fongicide que l’insecticide se d\u00e9gradent avec le passage du temps, donc la dur\u00e9e de la protection est directement proportionnelle \u00e0 la quantit\u00e9 appliqu\u00e9e.<\/p>\n

Un impr\u00e9gnant<\/strong> avec un haut r\u00e9sidu sec peut rendre le bois hydrofuge<\/strong> en le prot\u00e9geant de l’eau s’il n’est pas appliqu\u00e9<\/strong> de fa\u00e7on \u00e0 former une pellicule superficielle<\/strong>.<\/p>\n

Les pigments<\/strong>, qui ne sont pas transparents \u00e0 la lumi\u00e8re, cr\u00e9ent une barri\u00e8re<\/strong> superficielle imperm\u00e9able aux rayons ultraviolets, en \u00e9vitant la d\u00e9composition de la lignine.<\/p>\n

Les syst\u00e8mes traditionnels d’application par immersion, au pinceau ou au pistolet, ne peuvent pas garantir l’obtention simultan\u00e9e des trois r\u00e9sultats.\u00a0Un produit \u00e0 haut r\u00e9sidu sec<\/strong> formera une pellicule superficielle, en limitant la p\u00e9n\u00e9tration du composant insecticide et fongicide.\u00a0En revanche, un produit \u00e0 bas r\u00e9sidu sec<\/strong> aura une meilleure p\u00e9n\u00e9tration en rendant plus active l’action de l’insecticide et du produit fongicide, mais une r\u00e9sistance presque nulle \u00e0 la p\u00e9n\u00e9tration de l’humidit\u00e9 dans les parties internes du produit \u00e9labor\u00e9.<\/p>\n

\n

Seule l’utilisation de la technologie vide-pression a permis d’appliquer en profondeur des produits pigment\u00e9s \u00e0 haut r\u00e9sidu sec (12-30%) en obtenant ainsi la protection compl\u00e8te du produit \u00e9labor\u00e9.<\/strong><\/h3>\n

 <\/p>\n

\"\"<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

Protection complete du bois des agents de degradation grace \u00e0 l’utilisation de la technologie vide-pression Les installations d’impr\u00e9gnation IMV-VP sont indiqu\u00e9es pour le traitement des \u00e9l\u00e9ments soumis aux classes de risque trois, quatre et cinq. La conformation naturelle du bois en fait un mat\u00e9riel ad\u00e9quat pour l’utilisation \u00e0 l’ext\u00e9rieur. Sa composition (20-30% de lignine, 40-50%…<\/p>\n","protected":false},"author":1,"featured_media":14540,"parent":15965,"menu_order":281,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[],"impaginazione":[],"divisione":[3690],"categorie_modelli":[],"class_list":["post-14751","page","type-page","status-publish","has-post-thumbnail","hentry","divisione-isve-wood","description-off"],"acf":[],"yoast_head":"\nProtection du bois employ\u00e8 \u00e0 l'\u00e9xterieur - ISVE SpA - Traitement du bois - Recyclage - Broyeurs Granulateurs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/isve.com\/fr\/equipements-traitement-bois\/protection-du-bois-employe-a-lexterieur\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Protection du bois employ\u00e8 \u00e0 l'\u00e9xterieur - ISVE SpA - Traitement du bois - Recyclage - Broyeurs Granulateurs\" \/>\n<meta property=\"og:description\" content=\"Protection complete du bois des agents de degradation grace \u00e0 l’utilisation de la technologie vide-pression Les installations d’impr\u00e9gnation IMV-VP sont indiqu\u00e9es pour le traitement des \u00e9l\u00e9ments soumis aux classes de risque trois, quatre et cinq. 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