Basic Study on the Manufacture of Carbonized Wood Shaving Mat and its Application to Insutation Materials

点击翻译按钮获取中文摘要

Good formability was obtained at initial mat densities ranging 200-300 kg/m^3 and at carbonizing tenperatures ranging 400-500℃. Thermal conductivity of carbonized wood shaving mats was measured as a function of initial mat density and carbonizing temperature, and it was found that the minimun thermal conductivity was 25% less than that of wood shaving mats before carbonizing. To investigate the mechanisms behind this better insulation, apparent thermal connductivity of coarse pores which includs the effects of convective and radiative heat transfer was calculated by the use of a mix law of thermal conduction. On the other hand, relationships between carbonization temperature and adsorption ability to formaldehyde and ammonia were examined and then the mechanisms behind the adsorption ability were discussed from surface chemical characteristics and pore sizes.