親・疎水性からなる重ね布の水分伝達に関する2, 3の測定

抄録

The properties of water transmission in layered hydrophilic and hydrophobic fabrics were investigated by measuring: (1) the heat flow during the capillary absorption of a drop of water in the fabrics on the heat-flow sensor, (2) the rate of moisture-transfer through the fabrics and the relative humidity and temperature within the fabrics on the sweating simulator, and (3) the contact resistance between a metal cylinder and the fabrics during the moisture absorption and desorption processes by means of the change in cylinder temperature. Commonly available cotton shirting and polyester muslin were used as the hydrophilic and hydrophobic fabrics. The capillary absorption of a drop of water in the normal layered fabrics was observed only in the inside fabric, where the capillary water also evaporated. The outside fabric was only involved in the water-vapor transmission. The drying rate of the normal layered fabrics of polyester/cotton was higher than that of cotton/polyester. The rate of moisture-transfer through the layered fabrics of polyester/cotton on the sweating simulator was higher than that of cotton/polyester. The outside fabric did not play a major role in the contact resistance between the metal cylinder and the layered fabrics during the moisture absorption and desorption processes. Placing the hydrophilic fabric next to the skin is recommended because of its superior absorption properties.