METHOD AND APPARATUS FOR PRODUCING COMPOSITE MATERIAL REINFORCED WITH FILAMENT-TYPE STRUCTURES Russian patent published in 1995 - IPC

FIELD: manufacture of composite materials. SUBSTANCE: method involves producing fibrous reinforcing warp in the form of interwoven filament-type crystals with rigid three-dimensional nonwoven reinforcing structure. Filament-type crystals are formed by the action of ultrasonic plasma stream of vapors of evaporated substance flowing from electric arc vapor generator with Reynolds number of Re_L≲ 1. Warp obtained is treated in glow discharge plasma to impart rigidity to fibrous structure. As a result reinforcing warp in the form of interwoven filament crystals is produced and rigidity is imparted to three-dimensional nonwoven reinforcing structure in one step. EFFECT: increased efficiency, simplified process and improved quality of composite material. 3 cl, 2 dwg