Abstract
The prerequisite of material applications of porous materials is that their performance indexes reach the expected requirements. These materials are often used for sound absorption, heat insulation, and electrical applications. In this chapter, the characterization and test methods for the basic physical parameters of porous materials, including the sound absorption coefficient, thermal conductivity, and electrical resistivity, are introduced, based on the discussion of the basic pore factors in Chapter 9. Among these basic physical parameters, electrical resistivity can be measured in a number of different ways, including the four-probe, double bridge, potentiometer, and eddy methods. These methods should be chosen based on the structure characteristics of the porous materials in question.
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