▎ 摘　　要

NOVELTY - Low-frequency radar absorbent with strong weather resistance, comprises ≮ 90 wt.% nickel-zinc ferrite, 6-8 wt.% doped with a small amount of iron-silicon-aluminum and 1-2 wt.% graphene. USE - Used as low-frequency radar absorbent. ADVANTAGE - The absorbent: has strong weather resistance, excellent wave-absorbing performance and thin thickness; and the method is simple. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the low-frequency radar absorbent, comprising (1) mixing raw materials of nickel oxide, zinc oxide and ferrous oxide, and adding auxiliary agent of copper oxide to obtain a mixture, performing wet ball milling on the mixture to obtain ball milling slurry, (2) spray drying the resultant ball-milling slurry to obtain a dry mixture, (3) sintering the resultant dry mixture and cooling to obtain a sintered wave absorbing agent material, (4) finely grinding the resultant sintered wave absorbing agent material, performing vibration grinding and crushing and sieving to obtain a ferrite wave absorbing material, and (5) mixing the resultant ferrite wave-absorbing material with the specially-treated iron-silicon-aluminum and graphene, and uniformly stirring to obtain the final product.