FIELD: armament.
SUBSTANCE: invention relates to the field of layered bullet-resistant materials made of ballistic fabric with shielding properties; it can be used in the manufacture of mass protection equipment. For the manufacture of canvas, aramid fibers are pre-prepared by etching in acid at a temperature from 20 to 40°C and a time from 5 to 60 seconds, depending on the acid concentration. Fibers prepared in this way are washed and metallized with acid in an aqueous salt solution in the presence of a catalyst to reduce the acid concentration on the fiber. Fibers are dried to remove excess moisture or acid. The activity of the fiber surface is provided for interaction with copper, for which salt with a palladium and tin cation is added to an aqueous solution of copper as a catalyst, and acid-etched and washed fibers are immersed in it and mixed. The fiber surface is saturated with minerals, for which fibers are immersed in an accelerator bath with dilute mineral acid. Metallization is carried out directly, for which fibers are placed or passed through a metallization bath, in which copper ions are mixed with a formaldehyde catalyst and a preferred copper concentration of 1-5 g/l. Fibers are mixed for 10-20 minutes for active metallization at temperatures from 10 to 60°C. Metallized fibers are removed from the bath. Mesh is made of metallized fibers according to the Faraday cell principle, based on the calculation of the greatest effective shielding of electromagnetic radiation in the range from 20 MHz to 6 GHz. In addition, mesh fibers are made of aramid fiber metallized with heavy metal ions.
EFFECT: invention provides for the creation of strong and lightweight anti-fragmentation canvas capable of shielding frequencies of a possible explosive device, isolating explosive or suspicious objects by preventing the initialization of explosive devices located in them, detonators of which are controlled via radio channels.
2 cl
