从磨碎材料的介电特性确定固体材料介电特性的方法

Method for Determining Dielectric Properties of Solids from Dielectric Properties of Pulverized Materials

介绍一种测定不能用机械方法加工到所需精确尺寸的“固体材料”（农产品或矿物）介电特性的新方法．将这类已知“固体密度”的材料研碎，成为“空气粒子”混合物，在几个不同的“松密度”上测量其介电特性．利用“空气粒子”混合物的“松密度”和它的介电常数及损耗因子的线性函数关系，外推到“固体密度”，从而获得“固体材料”的介电特性．

A new method is described for determining the microwave dielectric properties of solid materials, agricultural products or minerals.The dielectric properties of pulverized samples with known densities are measured at a few different bulk densities. Properties for the solid are obtained by extrapolation of functions of the dielectric constant and loss factor that are linearly related to the bulk density of the air particle mixture.