The invention provides
silicon carbide polycrystalline shell-core wave-absorbing particles with
graphene on the surface, and a preparation method and an application thereof in
textile finishing. The particular preparation method comprises the steps: fully immersing a
graphite paper
electrode in concentrated
sulfuric acid, and carrying out ultrasonic treatment to obtain a pretreated
graphite paperelectrode; carrying out an electro-
hydrolysis reaction of the pretreated
graphite paper
electrode in a dilute
sulfuric acid solution with the
voltage of 5-8 V, taking out the graphite paper
electrode,carrying out ultrasonic wave washing of the graphite paper electrode with water, and dispersing to obtain a
graphene oxide solution; adding polycarbosilane into the
graphene oxide solution, then fully impregnating, taking out the product,
drying, and thus obtaining graphene
oxide pretreated polycarbosilane; and placing the graphene oxide pretreated polycarbosilane in a horizontal tubular furnace,carrying out heat treatment at the temperature of 1250-1400 DEG C, and thus obtaining the
silicon carbide polycrystalline shell-core wave-absorbing particles with graphene on the surface. The siliconcarbide polycrystalline shell-core wave-absorbing particles with graphene on the surface are mixed with auxiliary agents to form a wave-absorbing
textile finishing solution, and the wave-absorbing
textile finishing solution is adhered to the surface of textile base cloth to form a wave-absorbing
coating layer by a
coating, impregnation or spraying process.