Evaluation of the Influence of the Conditions of Catalytic Continuous Steam Explosive Activation of Wood on the Physical and Operational Properties of Wooded Composite Materials Based on Activated Fibers

Abstract:

This article presents the results of studies of obtaining wood composite board materials without binders using the method of preliminary steam explosive treatment, as well as an assessment of the impact of impregnation conditions and continuous steam explosive activation of wood on the physical and operational properties of wood-based composite materials based on activated fibers. The rational operating parameters for obtaining board wood-composite materials (WCM) have been determined. We established the influence of impregnation modes (temperature, catalyst concentration), continuous steam explosive treatment with afterwash (temperature, pressure, intensity of mechanical action), as well as the properties of activated lignocellulose fibers (composition and morphological structure) on the operational properties of WCM. The expediency of introducing a catalyst (sodium bisulfite) at the washing stage has been proved, since the introduction of sodium bisulfite during impregnation before steam explosive treatment promotes the formation of lignosulfonates in the activated material, which participate in the formation of the physical properties of WCM.

• Periodical: Key Engineering Materials (Volume 887)
• Pages: 129-137
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.887.129
• Online since: May 2021
• Authors: Dmitry B. Prosvirnikov*, Ruslan R. Safin, R.R. Kozlov
• Keywords: Activated Material, Board Material, Catalyst, Continuous Steam Explosive Treatment, Density, Lignocellulose Fibers, Ultimate Bending Strength, Wood-Composite Material

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