| 摘要 |
The invention concerns a method for determining the surface tension of a comminuted solid based on different experimental measurements and different mathematical equations. Said method uses the principle of capillary rise of a probe liquid through a tube partly filled with the comminuted solid and closed on one side with a permeable membrane. The method consists in firstly allowing the liquid to rise freely in the tube, in producing a first counter-pressure on the tube, in allowing once more the free rising system, then in applying a second counter-pressure. Throughout the process the evolution of the liquid mass having risen in the tube is measured on a time basis. And based on different mathematical equations, the surface tension UPSILON >s< of the comminuted solid is calculated. |
