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Title The Influence of Multiple Mechanical Recycling of Particleboards on Their Selected Mechanical and Physical Properties
ID_Doc 22279
Authors Wronka, A; Kowaluk, G
Title The Influence of Multiple Mechanical Recycling of Particleboards on Their Selected Mechanical and Physical Properties
Year 2022
Published Materials, 15.0, 23
Abstract This is a bridge between circular economy issues and wood-based panels technology, especially particleboards. Because these composites contain a significant amount of non-wood raw material (10-12% thermoset resin, high hardness laminates, among others), their mechanical recycling leads to an uncontrollable reduction in produced particle size. This problem can be especially significant since the particleboards can be intended for multiple recycling due to the shortening of their service life. This research aimed to produce particles in the cycle of multiple re-milling particleboards and evaluate the selected properties of the produced particles and particleboards. Thus, the response to the following scientific problem can be given: what factors qualitatively and quantitatively influence the properties of the particleboards produced by multi-re-milled particles? The novelty of this research is the approach to recycling the raw materials from particleboards in fully controlled conditions, providing the characterization of produced particles and producing particleboards with close-to-industrial parameters, and, finally, evaluating the features of produced particleboards in the light of raw materials used. The results confirmed that subsequent mechanical recycling of particleboards, where the other panels are made entirely of second-milling particles, leads to an unprofitable and unacceptable reduction in the mechanical properties of the panels. The physical parameters, such as thickness swelling and water absorption, are improved, but this can be the result of increased content of chemical ingredients, which negatively influence the hygienic features of panels (emission of formaldehyde and total volatile organic compounds-TVOC). Further research should be directed towards estimating the optimal addition of mechanically recycled particles to particleboard production.
PDF https://www.mdpi.com/1996-1944/15/23/8487/pdf?version=1669647097

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