▎ 摘　　要

NOVELTY - A three-dimensional (3D) composite material comprises three layers (A1-A3). The layer (A1) is made of a woven fabric support of spun yarns of 100% cotton fibers having a length density of 50x 2 tex in warp, and of spun yarns of 100% cotton fibers having a length density of 50x 3 tex in weft. The density ratio of the two yarn systems is 3.22-3.85. The mass per surface unit of the woven fabric is 410-420 g/m2. The layer (A2) is made of a polymeric film obtained by mixing 15-20 %mass copper microparticles with 80-85 %mass polyvinyl alcohol solution based on distilled water with a mechanical stirrer for 5-8 minutes, and magnetically stirring for 30-40 minutes at 80-90 degrees C. The polyvinyl alcohol solution has a concentration of 99%. The layer (A2) is deposited as a film by scraping or filming on the side of the fabric of the layer (A1), and crosslinking at 150-170 degrees C for 2-5 minutes. The layer (A3) is made of a film obtained by 3D printing by depositing a graphene-based filament. USE - Three-dimensional composite material for manufacturing textile electrodes and flexible sensors for electronics, electrical engineering, medical and textile applications. ADVANTAGE - The composite material has excellent electroconductive properties. DETAILED DESCRIPTION - A three-dimensional (3D) composite material comprises three layers (A1-A3). The layer (A1) is made of a woven fabric support of spun yarns of 100% cotton fibers having a length density of 50x 2 tex in warp, and of spun yarns of 100% cotton fibers having a length density of 50x 3 tex in weft. The density ratio of the two yarn systems is 3.22-3.85. The mass per surface unit of the woven fabric is 410-420 g/m2. The layer (A2) is made of a polymeric film obtained by mixing 15-20 %mass copper microparticles with 80-85 %mass polyvinyl alcohol solution based on distilled water with a mechanical stirrer for 5-8 minutes, and magnetically stirring for 30-40 minutes at 80-90 degrees C. The polyvinyl alcohol solution has a concentration of 99%. The layer (A2) is deposited as a film by scraping or filming on the side of the fabric of the layer (A1), and crosslinking at 150-170 degrees C for 2-5 minutes. The layer (A3) is made of a film obtained by 3D printing by depositing a graphene-based filament directly on the fabric of the layer (A1) on which the polymeric film of the copper-based layer (A2) is deposited.