Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science

IMPROVing IMPREGNATION TECHNIQUES FOR FINE CONIFEROUS AND NON-CONIFEROUS WOOD


DOI: 10.5937/jaes0-27654 
This is an open access article distributed under the CC BY 4.0
Creative Commons License

Olga Kunickaya*
Yakut State Agricultural Academy, Department of Technology and equipment of forest complex, Yakutsk,Russian Federation

Elena Runova
Bratsk State University, Department of reproduction and processing of forest resources, Bratsk,Russian Federation

Svetlana Chzhan
Bratsk State University, Department of reproduction and processing of forest resources, Bratsk,Russian Federation

Artem Zhuk
Bratsk State University, Department of reproduction and processing of forest resources, Bratsk,Russian Federation

Oleg Markov
Federal State Budget Educational Institution of Higher Education “Petrozavodsk State University”, Russian Federation

Ivan Garus
Bratsk State University, Department of reproduction and processing of forest resources, Bratsk,Russian Federation

Valentina Nikiforova
Bratsk State University, Department of Ecology, life safety and chemistry, Bratsk, Russian Federation

Viktor Ivanov
Bratsk State University, Department of reproduction and processing of forest resources, Bratsk,Russian Federation

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.

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The work was carried out within the confines of the scientific school “Advances in lumber industry and forestry”.

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