Estimation of the permittivity of polymeric composite dielectrics from the surface characteristics of the filler using a thermodynamic model

The Improvement of Foam Concrete Geoecoprotective Properties in Transport Construction

“…This screen must be more reliable if saturate one side of the screen with silica sol and create a protective film preventing leakage through the screen into the soil during exploitation. These geoecoprotective properties are examined in papers [12][13][14][15][16][17][18][19][20].…”

Lithosynthesis of the properties in the transport construction on the cement base

“…As for the detoxication, the meaning of the detoxication coefficient is high enough. It is known [12,13,14,15,16] that not far from railway has been observed pollutions nearly 20 number of TC and articles or dispersions of materials due to lithosynthesis can detoxicate of heavy metal ions. To develop lithosynthesis for geosphere detoxication has been obtained number TC for materials, for example, calcium sulphates till 100 meaning.…”

Effect of the modification of barium titanate on the permittivity of its composites with cyanoethyl ester of polyvinyl alcohol

“…By and large, the struc ture of such a material looks like a capacitor with suc cessive connection of different type materials, and for each composite, the dependence of k on the corre sponding values of its constituents proves to be non additive, being determined by the component per centage, and peculiarities of their contact and inter action. In a series of previously performed studies [8][9][10], it was shown that an optimal percentage of BaTiO 3 particles with a size in the range from 5 to 6 μm in CEPA based composites, which provides a maxi mal dielectric permittivity, is about 40 vol %. At higher percentages of the BaTiO 3 particles, a significant dete rioration of the dielectric properties of a composite occurs, caused by the agglomeration of filler particles, and correspondingly, by reduced homogeneity of their distribution in the filler, leading to a degradation of contact in the system CEPA BaTiO 3 .…”

“…In [8][9][10], different physical methods of BaTiO 3 modi fication were examined, such as thermal treatment, hydration, electron beam treatment, allowing to reach some increase of k under the optimal conditions of the process of treatment. This work is aimed at srudying the possibility to increase the dielectric permittivity of the composites involved at the expense of the surface mod ification of BaTiO 3 particles.…”