This is an open access article distributed under the CC BY 4.0
Volume 18 article 723 pages: 520 - 528
Wood modification with the improvement of its physical and mechanical properties is a promising way to increase the
commercial quality of the material and enhance its sustainable use. This article presents the results on developing a
model for impregnation with water of fine coniferous and non-coniferous wood by centrifugal processing techniques.
The mathematical modeling is based on Darcy’s law. According to the model representation, the impregnation rate
of the wood specimenis proportional to the pressure ratio of the impregnation liquid. The proportionality factor is a
constant value that depends on the. Performed comparative analysis revealed the perfect consistency of calculations
made using the formula of a centrifugal model with the experimental data. According to the analysis of impregnation
rate time dependencies, the main saturation of the treated sample with liquid (70%) occurs in 1/3 of the complete
cycle time. Besides, the established model allows determining with high accuracy the impregnation time as a function
of atmospheric pressure, rotational speed, and the ratio of wood sample length to centrifuge platform radius for different
wood species. Further studies are planned on evaluating the effect of different liquids viscosity on the kinetics of
wood impregnation as well as determining the applicability of the proposed model.
The work was carried out within the confines of the scientific school “Advances in lumber industry and forestry”.
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