1. The Application of Various Bark Species as a Fillers for UF Resin in Plywood Manufacturing.
- Author
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Walkiewicz, Joanna, Kawalerczyk, Jakub, Mirski, Radosław, Dziurka, Dorota, and Wieruszewski, Marek
- Subjects
PLYWOOD ,MODULUS of elasticity ,SPECIES ,TENSILE strength ,BENDING strength ,MAPLE - Abstract
The aim of the presented study was to apply various bark species (birch, beech, maple, pine and spruce) as fillers for urea-formaldehyde (UF) resin in three-layer plywood manufacturing. For this purpose, all types of bark were ground and added to the adhesive mixture. The resultant plywood was subjected to investigations of the following: tensile strength, modulus of elasticity (MOE), bending strength (MOR) and formaldehyde emission. The results indicate a reduction in the tensile strength. Moreover, the lack of significant improvement in strength parameters can be explained by too high a load of the filler (20 wt%). In the case of formaldehyde emissions, a reduction was observed for birch (B-1), beech (B-2), maple (B-3) and pine bark (B-4). In addition, an increase in the emission of formaldehyde was recorded only for spruce bark. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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