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Holz als Roh- und Werkstoff

, Volume 64, Issue 1, pp 74–79 | Cite as

Mechanical and physical properties of agro-based fiberboard

  • S. Lee
  • T.F. ShupeEmail author
  • C.Y. Hse
ORIGINALARBEITEN ORIGINALS

Abstract

In order to better utilize agricultural fibers as an alternative resource for composite panels, several variables were investigated to improve mechanical and physical properties of agro-based fiberboard. This study focused on the effect of fiber morphology, slenderness ratios (L/D), and fiber mixing combinations on panel properties. The panel construction types were also investigated such as hardboard (HB), medium density fiberboard (MDF), and bagasse core panel (BCP) made from bagasse/bamboo combinations with a combination of 1% pMDI/4% UF as a binder. Static bending properties and tensile strength increased as fiber L/D increased from 3 to 26. Fiber separation and morphology also influenced the mechanical property development of agro-based panels. Bagasse fiber bundles and particles smaller than L/D of 5.4 were responsible for the mechanical property loss of agro-based MDF. The BCP yielded promising results for modulus of elasticity (MOE) and modulus of rupture (MOR). However, HB appeared to be a better panel type for agro-based composites based on the property enhancement compared to wood-based panel products.

Keywords

Bagasse Internal Bond Slenderness Ratio Medium Density Fiberboard Forest Prod 
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.

Mechanische und physikalische Eigenschaften von Faserplatten aus landwirtschaftlichen Rohstoffen

Zusammenfassung

Um landwirtschaftliche Fasern als alternativen Rohstoff für Verbundplatten besser nutzen zu können, wurden verschiedene Faktoren zur Verbesserung der mechanischen und physikalischen Eigenschaften von Faserplatten aus landwirtschaftlichen Rohstoffen untersucht. Diese Studie beschäftigt sich in erster Linie mit der Wirkung von Fasermorphologie, Schlankheitsgrad (L/D) und möglichen Fasermischungen auf die Eigenschaften von Hartfaserplatten (HB), mitteldichten Faserplatten (MDF) und Verbundplatten aus Bambus mit unterschiedlich dicken Bagasse-Mittellagen (BCP) und einer Mischung aus 1% pMDI/4% UF als Bindemittel. Mit steigendem Schlankheitsgrad von 3 auf 26 nahmen statische Biegefestigkeit und E-Modul zu. Ausserdem beeinflussten auch Fasertrennung und -morphologie die mechanischen Eigenschaften der Platten aus landwirtschaftlichen Rohstoffen. Bagasse-Faserbündel sowie Partikel mit einem niedrigeren Schlankheitsgrad als 5,4 führten zu schlechten mechanischen Eigenschaften von MDF aus landwirtschaftlichen Rohstoffen. BCP zeigte viel versprechende Ergebnisse in puncto Elastizitätsmodul (MOE) und Biegefestigkeit (MOR). Geht man jedoch von einer Verbesserung der Eigenschaften im Vergleich zu Holzplatten aus, so scheint sich HB als Verbundwerkstoff aus landwirtschaftlichen Rohstoffen besser zu eignen.

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.School of Renewable Natural ResourcesLouisiana State University AgCenterBaton RougeUSA
  2. 2.USDA Forest Service Southern Research StationPinevilleUSA

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