Tannin resin-boron for outdoor wood protection and fire retardancy

Thévenon Marie-France, Tondi Gianluca, Leménager Nicolas, Wieland Stefanie, Pizzi Antonio. 2011. Tannin resin-boron for outdoor wood protection and fire retardancy. In : The International Research Group on Wood Protection 42th Annual Meeting: Section 3 Wood Protecting Chemicals, Queenstown, New Zealand, 8-12 May 2011. s.l. : s.n., 8 p. The International Research Group on Wood Protection Annual Meeting. 42, Queenstown, Nouvelle-Zélande, 8 May 2011/12 May 2011.

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Abstract : Boron in the form of boric acid is well known for its efficacy against wood destroying organisms, as well as for its high leachability from treated wood when in outside exposure. Moreover, due to the European directive 2008/58/EC, boric acid is only authorized at low levels. In order to keep considering boric acid as an interesting active ingredient for wood protection, the issue is now to fix it into the wood through networks that would leave boron enough freedom to stay active, would greatly reduce its depletion from treated wood, would remain eco-toxicologically acceptable. The associations of boric acid and tannin-hexamine (hexamethylenetetramine) resin were studied for their abilities to treat wood samples. These treatments were evaluated for their efficiency after leaching against Pycnoporus sanguineus (tropical bown rot), the exposure been done in tropical conditions. The fungal protection was maintained even after leaching, and these systems were also shown interesting for wood fireproofing. (Résumé d'auteur)

Mots-clés Agrovoc : Acide borique, Tannin, Produit de préservation du bois, Fagus sylvatica, Pinus sylvestris, Bois, Pycnoporus, Lutte anti-incendie, Composé hétérocyclique

Mots-clés complémentaires : Pycnoporus sanguineus, Hexamine

Classification Agris : K50 - Processing of forest products
J12 - Handling, transport, storage and protection of forest products

Auteurs et affiliations

  • Thévenon Marie-France, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
  • Tondi Gianluca, University of Applied Science (AUT)
  • Leménager Nicolas, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
  • Wieland Stefanie, University of Applied Science (AUT)
  • Pizzi Antonio, ENSTIB (FRA)

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