▎ 摘　　要

NOVELTY - Preparing carbon-based aqueous wave-absorbing coating comprises (i) selecting raw materials comprising carbon nanomaterial, aqueous resin and reinforcing fiber, (ii) preparing mother slurry by preparing methylcellulose solution, dispersing carbon nanomaterials and mixing dispersions of multiple components, where the most critical is the uniformity of dispersion of each component and the order in which each raw material is added, (iii) preparing coating into single-layer, double-layer, three-layer and other coatings of different specifications according to the amount of ceramic hollow microspheres added, where the main test basis is the reflectance result of the coating film, first the dispersion of Kevlar fibers, where the dispersion of chopped fibers is different from that of carbon nanomaterials, generally the ordinary serrated dispersing discs can be used, and the stirring speed should not be too fast, and if it is too fast, the fibers will be agglomerated. USE - The coating is useful for aircraft and other weapons, and device, and in ship. ADVANTAGE - The method: adopts carbon-based nano-materials as the absorbing agent of the wave-absorbing coating; and prepares aqueous radar absorbing coating by a simple dispersion method. The coating: has characteristics of light weight, corrosion resistance, excellent wave-absorbing performance and anti-cracking; is environmentally friendly; is mainly aimed at the stealth modification of old aircraft or newly developed unmanned aerial vehicle; can be sprayed or scraped; has simple and convenient construction; can carry out stealth modification coating on multiple ships; and is very suitable for high-salt and high-humidity marine environment by extremely strong stability of carbon nanomaterials. DETAILED DESCRIPTION - Preparing carbon-based aqueous wave-absorbing coating comprises (i) selecting raw materials comprising carbon nanomaterial, aqueous resin and reinforcing fiber, (ii) preparing mother slurry by preparing methylcellulose solution, dispersing carbon nanomaterials and mixing dispersions of multiple components, where the most critical is the uniformity of dispersion of each component and the order in which each raw material is added, (iii) preparing coating into single-layer, double-layer, three-layer and other coatings of different specifications according to the amount of ceramic hollow microspheres added, where the main test basis is the reflectance result of the coating film, first the dispersion of Kevlar fibers, where the dispersion of chopped fibers is different from that of carbon nanomaterials, generally the ordinary serrated dispersing discs can be used, and the stirring speed should not be too fast, and if it is too fast, the fibers will be agglomerated, and generally the control speed should be less than 1500 revolutions per minute.