The Determinations of Mean Capillary Radius, Contact Angle and Adhesion Energy of Glass Powder Bed with Various Liquids

Abstract

After the measurement of penetration rate of paraffin, alcohol, or acid homologue into glass powder bed by means of the improved penetration-rate-measurement apparatus, the mean capillary radius, contact angle, immersional tension, and adhesion energy of glass powder bed were calculated by the penetration rate equation derived from Poissieulle equation.
As the results, the above four values obtained for each homologue were related to carbon number of hydrocarbon chain of liquid molecules. Thus, the following facts were concluded from the values of both immersional tension and adhesion energy. That is, the values became larger by increasing the carbon number of hydrocarbon chain in paraffin homhlogue and, on the contrary, the values decreased inversely in acid homologue. On the other hand, the values were approximately constant in alcohol homologue.