木材の湿潤性測定法としての毛管上昇法について

抄録

In view of the fact that the wettability of wood is an important factor in processing woodworks, chemical and all otherwise, including adhesion, surface coating and impregnation, it is a matter of regret that little study on the wettability of wood has so far been made, and that the method of measurement in that line has not yet been established.
In the present paper the principle of the capillary rise method is discussed as an indirect method for measuring the wettability of wood. Wood meal prepared from red lauan (Shorea negrosensis Foxw) timber was used for this experiment, and water was used as wetting liquid. Several glass tubes (Each 300mm high, 2.65cm inside diameter) were filled uniformly with wood meal, and their lower ends were brought down to the water level by means of the sample level adjuster, and the height of the water rising in the wood meal column was measured. The weight of the water absorbed in the wood meal was measured at the same time by means of an apparatus using an U-gauge (An unbonded wire strain gauge type transducer).