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Einfluß der Verkernung und des Baumalters auf die Eigenschaften von Spanplatten aus Kiefernholz (Pinus sylvestris). Teil 4

Orientierende Untersuchungen zur Resistenz von Spanplatten aus Kern- und Splintholz der Kiefer gegenüber dem Braunfäuleerreger Coniphora puteana
Influence of heartwood and the age of tree on the properties of particleboards from pine. Part 4
 
: Dix, B.; Roffael, E.; Peek, R.-D.; Leithoff, H.

:

Holz als Roh- und Werkstoff 56 (1998), S.107-113
ISSN: 0018-3768
Deutsch
Zeitschriftenaufsatz
Fraunhofer WKI ()

Abstract
The biological resistance of particleboards made from sap- and heartwood of Pine (Pinus sylvestris) from trees of different ages was investigated using the brown rot fungi Coniophora puteana. The particleboards were bonded with polymeric diisocyanate (PMDI), melamin-urea-phenol-formaldehyde resin (MUPF-resin), phenolformaldehyde resin (PF-resin) and tanninformaldehyde resin (TF-resin). As reference particleboards from sap- and heartwood of Douglas Fir (Pseudotsuga menziesii) and Larch (Latrix decidua) were investigated using the binders PMDI, MUPF-, PF- and TF-resin as well as particleboards from sapwood of pine containing a chemical wood preservative. Generally, MUPF- and TF-bonded particleboards made from heartwood were of higher biological resistance compared with those made from sapwood using the same binder system. In case of PMDI-bonded pine particleboards the influence of heartwood on the biological resistance was almost undetectable.

: http://publica.fraunhofer.de/dokumente/PX-10916.html