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Bonding behaviour of chips from sap- and heartwood of pine (Pinus Sylvestris [L.])

 
: Roffael, E.; Dix, B.; Schäfer, M.; Leithoff, H.; Peek, R.

BioComposites Centre, Bangor:
Fifth European Panel Products Symposium 2001. Proceedings : Llandudno, Wales, UK, 10th, 11th and 12th October 2001
Bangor, Gwynedd, 2001
ISBN: 1-84220-023-2
S.334-337
European Panel Products Symposium <5, 2001, Llandudno>
Englisch
Konferenzbeitrag
Fraunhofer WKI ()

Abstract
Chipboards prepared from heart- and sapwood of pine using alkaline Phenol Formaldehyde (PF) and Tannin Formaldehyde (TF) resins as binders were evaluated for their mechanical properties, thickness swelling and formaldehyde release. Moreover, preliminary tests on the biological resistance of the boards were carried out. The results reveal that boards made from heartwood are of higher intenal bond strength, lower thickness swelling and formaldehyde release compared to those from sapwood. Interim results on the biological resistance of the boards indicate that TF-bonded boards from heartwood are of higher biological resistance than boards prepared from sapwood.

: http://publica.fraunhofer.de/dokumente/N-7459.html