Study of the Process of Porous Materials Impregnation Using the Example of Leather Tanning

The paper presents the results of the study of the process of porous materials impregnation from the point of view of percolation theory. Diffusion front, diffusion front shell, percolation cluster are determined using developed application. Processing of digital images obtained during the study of the porous object impregnation is used. This allowed obtaining the necessary quantitative characteristics of the diffusion front, percolation clusters and percolation shell. Quantitative characteristics were analyzed and kinetic curves of the impregnation process were constructed on the example of leather tanning process. As a result, the main stages of the impregnation process of the tanning composition: accumulation, percolation and distribution have been revealed. The methodology of the impregnation process study and the method of its visualization have been developed and applied to the processes of leather tanning. The universality of this development will allow applying them to the study processes in other porous materials, and in modeling and creation of new materials.