公开(公告)号：US20110167897A1

公开(公告)日：2011-07-14

申请号：US13119722

申请日：2009-11-03

申请人： Yan Huang ,  Jian Yu

发明人： Yan Huang ,  Jian Yu

IPC分类号： G01N15/08

CPC分类号： G01N15/088

摘要： A method of determining surface pore diameter distribution of a porous material is provided. A compressed gas is charged from backside of a sample of a porous body, a surface of the sample is immersed into a liquid wetting agent, and a gas pressure is regulated from high to low, such that pore mouths of the surface of the porous body are blocked by the wetting agent in an order from small to large pore sizes, and a gas flow rate is more rapidly decreased. When the pressure is decreased to a value, the gas flow rate is reduced to zero and the pressure at this time is corresponding to the largest pore mouth size of the surface of the porous body. The pore size distribution is determined by comparing the obtained gas pressure—flow rate curve (wet curve) with a gas pressure—flow rate curve (dry curve) obtained for the sample under a dry state. The pore size and the pore distribution are calculated based on the conventional bubble pressure method. The measurement of the surface pore distribution of the porous body is of great significance for investigating the support performance of the porous body.

摘要翻译： 提供了确定多孔材料的表面孔径分布的方法。 从多孔体的样品的背面填充压缩气体，将样品的表面浸入液体润湿剂中，并将气体压力从高调至低，使得多孔体的表面的孔口 被润湿剂按照从小到大的孔径的顺序阻挡，并且气体流速更快地降低。 当压力降低到一个值时，气体流量减少到零，此时的压力对应于多孔体表面的最大孔口尺寸。 通过将获得的气体压力 - 流量曲线（湿曲线）与在干燥状态下获得的样品的气体压力 - 流量曲线（干曲线）进行比较来确定孔径分布。 基于常规气泡压力法计算孔径和孔分布。 多孔体的表面孔分布的测量对于研究多孔体的支撑性能具有重要意义。