▎ 摘　　要

NOVELTY - The method involves pre-treating fabric with ethanol and acetone. The fabric is placed in a high-temperature and high-pressure reaction kettle. Wave-absorbing nano-powder and cosolvent mixture are placed in a feeding kettle. A carbon dioxide fluid is introduced into the feeding kettle after heating and pressurizing. The carbon dioxide liquid is discharged into the feed kettle with a certain flow rate. A finishing agent is formed by mixing and dissolving with the wave absorption nano powder and the entrainers to form a finishing agent under the action of a circulating device. A non-finished absorbing material is recycled and reused. A gaseous carbon dioxide reflux collection is repeatedly used. A complete finishing process is completed. The composite waveabsorbing powder is nano-wave absorbing material graphene, carbon nano-tube, ferrite and MXene-titanium carbide. The cosolvent comprises non-polar hydrocarbon substances i.e. normal hexane, cyclohexane and pentane. USE - Supercritical carbon dioxide finishing process of wave-absorbing electromagnetic shielding fabric used in civil and military fields, preferably intelligent communication system, wireless network device and electronic detecting device. ADVANTAGE - The wave-absorbing electromagnetic shielding fabric is featured with thin thickness, light weight, wide frequency band, strong reflection loss ability, flame-retardant property, radiation-resistant performance, high density, limited physical elasticity, and easy to generate vortex and secondary pollution.