You are here: Home :: Area NEM :: Agricultural science

M. Gagnon, C. Roy, B. Riedl

Adhesives made from isocyanates and pyrolysis oils for wood composites

Wood adhesives derived from softwood bark pyrolysis oils (PO) and isocyanates (pMDI) have been developed for particleboards with a non-conventional blending system. The PO produced by the vacuum pyrolysis Pyrocycling? process was used to replace between 30 and 40% by weight of the pMDI in a 4% adhesive-containing particleboard. Results showed that mechanical properties (IB, MOE and MOR) and thickness swelling of homogeneous boards exceeded the minimum requirements set by ANSI A208.1-1993 and ASTM 1037-96a standards. The study showed that pyrolysis oils can be mixed at ratios as high as 40% with pMDI and give acceptable interior grade particleboard properties. It was also shown that PO reduces panel to metal adhesion by 86%, in comparison to the control.

Holzforschung, Walter de Gruyter

Print ISSN: 0018-3830
Volume: 58, 07/2004
Pages: 400 - 407

Show full article (external site)

Show all available items of this journal

 

Area NEM