The introduction of laser-based 3D particle measurement enables the automatic determination of particle dimensions, surface area, and volume. In the present study, the influence of particle size and surface-specific adhesive amount on the properties of particleboards was investigated.
To eliminate potentially overlapping effects, single-layer particleboards with a homogeneous density profile were produced and analyzed. On the one hand, the surface-specific adhesive amount was kept constant for different particle fractions using 3D particle measurement to ensure comparability despite variations in particle size. On the other hand, the surface-specific adhesive amount was specifically varied for a single particle fraction in order to analyze its influence.
As particle size increased, a decrease in modulus of rupture, modulus of elasticity, and internal bond strength was observed, along with an increase in thickness swelling and water absorption. The opposite was observed for an increase in the surface-specific adhesive amount. Such correlations form the basis for targeted optimization of the particleboard production process.
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Thuenenprojects:
Development of a measuring system to determine particle dimensions
Digital 3D measurement of wood particles for more efficient materials
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