ФИЗИКО-МЕХАНИЧЕСКИЕ ХАРАКТЕРИСТИКИ МИНЕРАЛИЗОВАННОЙ ДРЕВЕСИНЫ

Abstract

A comparative analysis of the mineralization of wood with a solution of an organic mineral complex in various modes is carried out: spontaneous (by immersion in a container with a solution) and forced (during autoclave treatment under excessive pressure using an inert gas) modes. This analysis will reveal the optimal parameters of wood mineralization, which, in turn, will help to solve the problem of increasing the durability and reliability of wood materials intended for use in extreme climatic conditions. The composition of the modifying solution is natural polysaccharide arabinogalactan and polymineral quartz-containing sand (10 % arabinogalactan and 10 % polymineral sand). It is found that during 24 hours of processing, the density of pine wood increases by 18 % (with spontaneous flow of the process, this parameter increases by only
 10 %). An increase in the density of samples leads to an increase in their compressive strength by 80 % (during spontaneous processing) and by 91 % (during autoclaving). The Brinell hardness of the prototypes increases more than three times (regardless of the conditions of the process). A detailed description of the individual stages of the process of thermal decomposition of the wood of the prototypes is obtained. It is found that for modified samples (compared with control ones), the degree of thermal destruction is significantly reduced.