Durability of tannin boron treated timber

Tondi Gianluca, Palanti Sabrina, Wieland Stefanie, Thévenon Marie-France, Petutschnigg Alexander, Schnabel Thomas. 2012. Durability of tannin boron treated timber. BioResources, 7 (4) : 5138-5151.

Quartile : Q1, Sujet : MATERIALS SCIENCE, PAPER & WOOD

Résumé : Tannin-boron wood preservatives were investigated for their resistance against outdoor agents. This work focused on the analysis of the causes that affect the durability of the tannin-hexamine-treated samples. In particular, dimensional stability, resistance to leaching, and resistance to biological agents were investigated. The combined effect of deterioration agents was evaluated by subjecting the treated samples to simulated and natural weathering tests. The study of the appearance and of the color components (L*, a*, and b*) according to CIELAB space of the exposed samples was monitored to assess the efficacy of the tannin-boron formulations for outdoor applications. Significant resistance against the action of water (EN 84, ENV 1250-2) and insects (EN 47) has been demonstrated in specific tests. Conversely, the continuous stress due to artificial and natural weathering deteriorates the color and the visible features of the treated specimens. The combined effect of moisture modifications, solar exposition, and leaching cycles damages the structure of the tannin-based polymeric network and subsequently it negatively affects its preservation properties.

Mots-clés Agrovoc : bois, produit de préservation du bois, Pinus sylvestris, tannin, acide borique, hydroxyde de sodium, composé hétérocyclique, durabilité, couleur, stabilité, lutte anti-insecte, Acacia mearnsii, extrait d'origine végétale

Mots-clés géographiques Agrovoc : Autriche

Classification Agris : K50 - Technologie des produits forestiers
J12 - Manutention, transport, stockage et conservation des produits forestiers

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

• Tondi Gianluca, University of Applied Science (AUT)
• Palanti Sabrina, IVALSA (ITA)
• Wieland Stefanie, University of Applied Science (AUT)
• Thévenon Marie-France, CIRAD-PERSYST-UPR Bois tropicaux (FRA)
• Petutschnigg Alexander, University of Applied Science (AUT)
• Schnabel Thomas, University of Applied Science (AUT)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/565588/)

Métriques

[ Page générée et mise en cache le 2024-06-03 ]