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Experimental and theoretical investigations of the electret effect in low-dimensional micas with different degrees of dispersion and adsorption are carried out at temperatures in the range 20-140°С. The results obtained allow the electric activity of the mica particles comprised in these systems to be determined and the efficiency of application of low-dimensional micas for fillers of composite materials to be estimated.

Thermally stimulated spectra of hydrated dispersed mica in the range of temperatures (20–140)оС are analyzed to study the electret properties of the system subject to water content. It was found that electret and relaxation parameters of the samples depend on the amount of adsorbed water. Peculiarities of the electret state of mica particles low-dimensional system and the influence of adsorbed water on charge relaxation in the system have been established. Obtained results can be applied for developing new composite materials that contain dispersed mica as a filling compound.