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Stärke-Tannin-Bindemittelsysteme für Span- und mitteldichte Faserplatten

 
: Dix, B.; Loth, F.; Roffael, E.

Kharazipour, A.; Polle, A.:
Ansätze in der Biotechnologie des Holzes
Frankfurt am Main: Sauerländer, 1998 (Schriften aus der Forstlichen Fakultät der Universität Göttingen und der Niedersächsischen Forstlichen Versuchsanstalt 124)
ISBN: 3-7939-5124-3
S.135-156
Deutsch
Aufsatz in Buch
Fraunhofer WKI ()

Abstract
Modified starches in combination with tannins were used as binders for particleboards and medium density fibreboards. Certain modified starches decreased the viscosity, shortened the curing speed and prolonged the period of used of the tannin formaldehyde resin. With certain mixtures of 80 per cent TF resin and 20 per cent starch hydrolysate it was possible to manufacture particleboards procucing strength properties which met the requirements of flat pressed boards for structural engineering type V100. With a starch portion of 40 per cent in the glue resin strength properties of the type V20 were reached but not those of the type V100. As far as the thickness swelling is concerned boards manufactured without hydrophobing agent reach the V20 quality when TF resin/acid hydrolized starch (up to 30 per cent of the tannin is substituted by starch) is used. With regard to strength and thickness swelling MDF with TF resin/starch hydrolysate mixtures as binder are suitable for the application in dry areas.

: http://publica.fraunhofer.de/dokumente/PX-34703.html