Finishing panels for electromagnetic shielded premises on the basis of nanostructured composite materials

A wide utilization of electronic equipment produces the necessity to integrate building and shielding technologies. This would make it possible to construct premises and buildings, capable of attenuation of the electromagnetic fields, generated by industrial and household sources. Such kinds of premises would solve the problems of electromagnetic compatibility, uncontrolled effect of electromagnetic radiation (EMR) on human organism, protection of critical types of information assets, processed by automatic facilities. In addition to the high shielding effectiveness the materials should ensure the fire safety in the premises. The developed multilayered shielding materials based on composites, which are characterized by high dielectric and magnetic losses, ensure the EMR attenuation 20...35 dB in the frequency range of 0,7...17 GHz. The EMR reflection factor, ensured by the suggested materials, is -5...-1 dB. Open fire (+1700 оС) impact on the developed materials was studied and the burning-through time for different samples was determined. The burning-through time is sufficiently increased up to 140 s due to hygroscopic aqueous solutions application in the composite materials content.