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Holz als Roh- und Werkstoff

, Volume 60, Issue 4, pp 291–296 | Cite as

Biodegradable lightweight construction boards based on tannin/hexamine bonded hemp shaves

  • M. Theis
  • B. Grohe
Originalarbeiten · Originals

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, with a dry I.B. strength of up to 0.34 MPa, a formaldehyde release well within the emission class E1 and certificate as normal flammable and not burning dripped off (DIN 4102-B2) were fabricated by mixing hemp shaves with a borate-modified mimosa tannin-hexamine binder and press the masses as fast as 6 s/mm thickness at 70°C to one-layer boards. Different drying processes indicate that fast drying at ˜100°C is needed both for satisfactory strengths and for a sufficient dimension stability performance of soaked samples, but, as well for a lower boron leaching during soaking. For dry environments the resistance to fungal attack is sufficient enough to have boards for interior application.

Keywords

Burning Boron Dimension Stability Stability Performance Hemp 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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verpresst. Querzugfestigkeiten bis zu 0.34 MPa, Formaldehyd-Emissionen die innerhalb der Emissionsklasse E1 liegen und Brandschutzeinstufungen als normal entflammbar und nicht brennend abtropfend (DIN 4102-B2) wurden bestimmt. Verschiedene Trocknungsprozesse zeigen, dass schnelles Trocknen bei ˜100°C zu höheren Festigkeiten und, nach wässern der Proben, zu ausreichender Dimensionstabilität bei geringerer Borauswaschung führt. Für trockene Umgebungen ist die Resistenz gegen Pilzbefall ausreichend genug um die Bretter für Innenanwendungen einzusetzen.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • M. Theis
    • 1
  • B. Grohe
    • 2
  1. 1.AgroSys GmbH & Co. KG, Flugplatz Pferdsfeld 1, 55566 Bad Sobernheim, GermanyDE
  2. 2.Fachhochschule Pirmasens, Carl-Schurz-Straße 1–9, 66953 Pirmasens, GermanyDE

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