无机多孔材料保水性能与其粒度分布分形维数关系的研究

Study on Relationship between Water Retention and Fractal Dimensions of Particle Size Distribution of Inorganic Porous Materials

为研究无机多孔材料保水性能与其粒度分布分形特征之间的关系,以4种无机多孔材料为研究对象,采用高温保水法测量了无机多孔材料的保水性能,并运用数字显微系统测定了其粒度分形维数。结果表明,多孔材料的粒度分布分形维数值介于1.1278～2.0523之间,且分形拟合曲线相关系数大于0.99,强的相关性说明多孔材料的粒度分布具有显著的分形特征,多孔材料的保水性能与其粒度分布分形维数呈负相关关系。

In order to investigate the relationship between the performance of water retention and fractal dimensions of particle size distribution of inorganic porous materials, the property of water retention is measured by method of high temperature water retention method, and the fractal dimension of particle size distribution of 4 kinds of inorganic porous material samples is eaeulated by digital microscopic system. The results show that the value of fractal dimension of particle size distribution of the samples is in a range from 1. 1278 to 2. 0523, and the correlation coefficient of fitting curve for calculating the fractal dimension is much larger than 0. 99, the strong relativity indicates that the riarticle size distribution of these samples is fractal evidently. The relationship between fraetal dimension of particle size distribution of these particle materials and their water retention property is negative.