无机多孔材料保水性能与孔分形维数关系

Relation between Water Retention of Inorganic Porous Material and Pore Fractal Dimension

多孔材料的孔分形维数值能够很好的反映多孔材料的保水性能。本文以4种分别来自华东,华南,西南,西北地区的无机多孔材料为研究对象,比较了4种多孔材料的保水性能,并用显微和图像分析技术测算了4种多孔材料的孔分形维数,从而得到多孔材料保水性能与孔分形维数间的关系。结果表明,采用本方法测定的多孔材料的孔分形维数介于1.0227～1.4652之间,且孔分形维数越大,多孔材料的保水性能越好。

Pore fractal dimension of porous materials can reflect the water retention property of the porous materials well. In this paper, 4 kinds of inorganic porous materials which come from east China, south China, southwest and northwest areas, were studied, and their water retention property was compared, and the pore fractal dimensions of 4 kinds porous materials were calculated by the microscopy and image analysis techniques, moreover, the relationship between the water retention and pore fractal dimension of porous materials was gained. The results indicated that the pore fractal dimension of porous materials can be got by this method, the range of the fraetal dimensions of 4 kinds porous materials was from 1. 0227 to 1. 4652, and when the fractal dimension is bigger, the performance of the water retention is better.