<報文>浸透速度法による粉体の接触角測定

概要

論文の詳細を見る
For a study of the penetration of liquids into porous materials, Peek and McLean's equation has been commonly used. But, in this study a general equation of capillary penetration was introduced in a different way of derivation, considering an infinitesimal work dw done by the wetting tension of the solid-liquid-gas interfaces for the penetration of the liquid and the gas through a bed of porous materials by an infinitesimal distance dh in an infinitesimal time dt. It has been shown by the equation that the resistance due to viscous flow of the gas should be taken into consideration in the earlier stage of penetration of the liquid. Furthermore, the equation for the calculation of contact angles by the correlation of two liquid-solid systems was introduced. A description is given of the effect of the adsorption pH values of the dodecylammonium acetate solution on the contact angles of the adsorbed quartz against water.
東北大学の論文
1965-10-05