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Modification of wood - new chances for timber use -

Woodism – International Partnering meeting 30 January 2007 - Winterthur. Modification of wood - new chances for timber use -. Bôke F. Tjeerdsma SHR Timber Research Wageningen – The Netherlands Nieuwe kanaal 9b P.O. Box 497, NL 6700 AL Wageningen, The Netherlands

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Modification of wood - new chances for timber use -

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  1. Woodism – International Partnering meeting 30 January 2007 - Winterthur Modification of wood - new chances for timber use - Bôke F. Tjeerdsma SHR Timber Research Wageningen – The Netherlands Nieuwe kanaal 9b P.O. Box 497, NL 6700 AL Wageningen, The Netherlands Website: www.shr.nl - Email: b.tjeerdsma@shr.nl

  2. Wood modification Wood modification 30 January 2007 Woodism Winterthur Definition • Improving the properties of wood by means of changing the molecules of wood • No addition of toxic components • Alteration of low-value-wood-species

  3. Wood modification Wood modification 30 January 2007 Woodism Winterthur Multiple aims • Improving the durability • increasing the resistance against biological attack • Improving dimensional stability • Aesthetic properties – Colour • Hardness • Water repellent • Acoustic properties • Combination with flame retardant

  4. Wood modification Wood modification 30 January 2007 Woodism Winterthur State of the art • Reasons for modification of wood • Technical restrictions(durability, dimensional stability, uv degradation, water absorption) • Availability of wood & and increasing prices • Use of European wood species • Tropical hardwoods & wood preservation • From research idea to industrial market introduction • Modified wood available on the market • Industrial diversity & Product development

  5. A challenging project with modified wood Wood modification 30 January 2007 Woodism Winterthur • Wooden traffic bridges • Acetylated radiata pine • AccoyaTM - Titan Wood • High demanding construction • Adhesives - lamination • Connections – glued-in-rods • Coating • Maintenance and durability

  6. Wood modification Wood modification 30 January 2007 Woodism Winterthur Experiences European projects • Many projects • Ecotan (http://www.projects.bre.co.uk/ecotan/) • Hydrofoob • Ecobinders – modification with furans • (http://www.ecobinders.net/default.aspx) • Thematic Network Woodmodification • 3e European Conference on Wood ModificationCardiff – Wales 15-16 October 2007 (http://www.ecwm3.com) Relevant - European projects

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