With the wood of Eucalyptus viminalis and Chamaecyparis obtusa as experimental materials, and adopting the method of image amplification, the impact of heat treatment and air layer on the contact angle between the tested wood and water was determined. Results show that the temperature, the time of the wood being treated, the moisture content of the wood, and the time when the wood was exposed in air, have a remarkable influence upon the contact angles between the two kinds of wood and water. The degree of influence varied with the tree species. Therefore, the hydrophilicity of various woods ca...
