Intensification of the Foam Technology by the Energy of Electrohydrothermal Force Fields. Part 1. Analysis of the Specif
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Vol. 61, No. 3, September, 2020
INTENSIFICATION OF THE FOAM TECHNOLOGY BY THE ENERGY OF ELECTROHYDROTHERMAL FORCE FIELDS. PART 1. ANALYSIS OF THE SPECIFIC FEATURES OF GENERATION OF INTERNAL PRESSURE IN FOAM MASSES BY THE ACTION OF ELECTRIC CURRENTS V. N. Sokov1,2 Translated from Novye Ogneupory, No. 5, pp. 56 – 58, May, 2020.
Original article submitted April 26, 2020. We propose a concept of potential energy that describes the natural ability of foam systems to self-compaction under the complex action of electrohydrothermal force fields. The process of generation of the excess internal pressure in foam systems is studied both analytically and experimentally. The experimental data on the dynamics of temperature and pressure are obtained as a result of monitoring performed with the help of a computer and the contemporary base of electronic components. The proposed technology is based on the method that enables one to combine several processes in a single operation, namely, the process of compaction of refractory components of the mixture, the process of removal of shrinkage moisture, the process of stamping of light-weight products of any profile, and the procedure of getting clear edges without grinding and/or trimming of the products. Keywords: self-compaction, potential energy, electrohydrothermal force field (EHTFF), AC energy, coefficient of volumetric expansion, generation of pressure.
The foam technology is characterized by high amount of mixing water required to get homogeneous masses. The traditional theoretical understanding of the process of drying of foam masses as the process of removal of mixing water solely as a result of evaporation leads to very long periods of drying. In the present work, we advance a concept of potential energy that describes the natural ability of foam systems to self-compaction in closed perforated volumes accompanied by the removal of mechanically bound moisture under the complex action of electrohydrothermal force fields (EHTFF). The idea of the proposed approach can be described as follows: The foam mass is poured in a closed perforated mold to completely fill its volume and subjected to electric heating by lamellar electrodes placed on the opposite faces. This leads to the fast and uniform heating of the foam mass in the entire volume. Note that this is the most rapid and 1 2
well-controlled procedure of heating of the masses. The proposed technology is based on the method that enables one to combine numerous processes in a single operation, namely, the process of compaction of refractory components of the mixture, the process of removal of shrinkage moisture, the procedure of stamping of light-weight products of any profile, and the procedure of getting clear faces without grinding and/or trimming of the products. The foam mass is a structured finely divided system with certain elastic, plastic, and viscous properties. In the stage of its production, the role of the most important factors is played by the structural mechanical properties of foamy films and the characteri
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