Analysis of wood impregnation as a capillary-porous material

The article deals with the problem of improving the technology of wood impregnation. Mathematical modeling is used as a research tool. Using the logistic approach, the calculation formulas are obtained in which the properties of wood that affect the laws of impregnation are considered in an integral form. The adequacy of the simulation results is confirmed by their consistency with experimental data for samples of aspen wood. By means of the developed model the analysis of laws of impregnation is executed and quantitative estimations of the simulated process are obtained. It is established that the concentration of impregnating liquid in the wood increases almost linearly at the initial stage of impregnation, and the duration of this stage in the simulated process is about two minutes. However, according to the instructions of the manufacturer of the impregnating liquid, impregnation should be carried out by immersion in the solution for 60 seconds, which is less than the duration of the rapid impregnation stage. This means that to improve the quality of impregnation and economical consumption of impregnating liquid impregnation should be carried out by immersion for at least 120 seconds. The research prospects are connected with the specification of the model parameters depending on the wood species and impregnation technology.