Surface Properties of Building Materials made of Pine Wood Treated with Low-Temperature Plasma

Relevance. One of the key criteria for the use of wood in construction is its resistance to adverse factors. Most often, wood protection is provided using special impregnations or coatings, but their effectiveness is limited by their service life and operating conditions. As an alternative, it is proposed to consider the wood surface treatment with low-temperature plasma. In order to expand the scope and range of processed products, it is necessary to provide control for the surface properties of wood construction products in the plasma treatment process. To solve this problem, it is necessary to determine the effect of processing parameters on wood surface properties. 

Purpose: The aim of the work is to determine the surface properties of pine wood construction materials depending on the parameters of plasma treatment. 

Research findings: Based on the results of theoretical calculations, it is found that the specific heat flow and processing speed affect the processing depth of building materials made of wood, which can affect the surface properties. According to tests, water permeability decreases and bio-resistance of wood grows with increasing processing depth. Thus, with a specific heat flux of 1.2·106 W/m² and processing speed of 12 cm/s, the water permeability of the samples is 2.8 ± 0.1 cm³/h, bio-resistance is 4 points, while at the processing speed (longer exposure time) reduced to 3 cm/s other constant parameters being constant, the water permeability is 1.5 ± 0.1 cm³/h, and the bio-resistance is 1 point.

Value: The results obtained reflect the possibility of control for surface properties of wood construction products during plasma treatment.

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