This monograph systematically presents the fundamentals of theoretical and experimental research into the most important physical characteristics of porous structures. Non-standard behavior of certain physical parameters, such as the breakdown of the electric field of porous substances, is described. The method of calculation of the thermal conductivity coefficient of porous dielectrics, based on the non-equilibrium principle, is illustrated in detail. The present approach may be applied to the investigation of the properties of "disparate" substances such as cellulose matrices, composites, and fibrous structures. The book is intended for physicists, physical chemists and materials scientists at research and postgraduate and undergraduate levels. It may also be helpful for engineers and technical workers in the applied sciences.

Inhalt

1 Introduction.- 2 Model of the Internal Structure of a Porous Dielectric.- 3 Equilibrium Physical Parameters of Porous Dielectrics.- 4 The Theory of Fast Nonstationary Phenomena in Porous Dielectrics.- 5 On Specific Features of Thermal Conduction and Diffusion in Porous Dielectrics.- 6 Behavior of Porous Dielectrics in Acoustic and Electromagnetic Fields.- 7 Conclusion.- B Collision Integrals and Relaxation Time Calculation.- C Simplified Theory of Thermal Conduction in a Porous Dielectric.- D.1 Theory of Fluctuations.- D.2 Fluctuations of the Main Thermodynamic Values.- References.