Thermal modification of birch wood to obtain desired color

Abstract

Thermomodification is a thermal destruction of wood in an oxygen-free environment. The actual problem is the analytical identification of technological regimes for obtaining thermomodification wood with desired properties, including color parameters. The rate of thermal destruction depends on the temperature, kinetic parameters of each stage and the degree of completion. The article proposes to determine the wood color characteristics as a function of degree completion individual stages of thermal destruction. To identify used model of color components decomposition at the GRB. A method for determining the degree of wood modification by its color is proposed. The mathematical model for calculation of technological process parameters thermomodification to get wood of set color is resulted. An example of determining the degree of thermal destruction industrial production birch wood by color parameters is given. Technological modes for production of set color wood are calculated. Solutions are obtained for isothermal and non-isothermal regimes.