▎ 摘　　要

NOVELTY - Wave absorbing agent based on tetrazolium acetate copper-iron complex derivatives is claimed. The wave absorbing agent is a nano and micro-scale powder composed of iron oxide, Iron Nitride, copper, Copper iron oxide, amorphous carbon and graphene. USE - The material is useful in civil and military fields. ADVANTAGE - The material: has active absorption bandwidth below 10 dB to 17.1 GHz (0.918 GHz), which is a near-full-band wave absorbing material and reaches the maximum reflection loss 40.1 dB at 16.3 GHz, when the matching thickness is 1.1 mm, which has the potential to be used as an ultra-thin absorbing material. The method: has green environmental protection and simple preparation process and does not generate any toxic by-products. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing wave absorbing agent comprising (1) weighing 1-1.2 mmol tetrazolium acid (Htza) dissolved in 10-12 ml distilled water, using 1 mol/l sodium hydroxide to adjust the pH of the solution to 8-9, adding 4-6mL copper chloride (0.1 mol/l), stirring at room temperature for 1-2 hours, gradually adding 4-6 ml iron nitrate aqueous solution (0.1 mol/l), generating yellow brown polyhedral crystal after three days, washing and drying by distilled water to obtain the copper-iron hetero nuclear energy-containing complex ((CuIIFeIII3O (tza)6(H2O)3).Cl.(NO3)2.4H2O), (2) placing the heteronuclear energy-containing complex in the liner for high temperature resistant, acid-alkali-resistant, placing in small stainless steel explosion-proof reaction kettle, placing in a muffle furnace, heating to 280-300degrees Celsius at a rate of 5-10degrees Celsius/minute, so that the energetic copper-iron hetero nuclear energetic complexes are explosively decomposed, cooling to room temperature along with the furnace, (3) cooling the precursor explosion decomposition product, placing in the inert gas tube furnace, calcining for 2-3 hours at a rate of 5-10degrees Celsius/minute from room temperature to different temperature, reducing the temperature to room temperature and (4) fully mixing the product with paraffin at different temperature, placing into 80degrees Celsius for box heating for about 20 minutes, taking out after the paraffin is changed into liquid state, quickly stirring uniformly, solidifying the sample, continuously placing into 80degrees Celsius for drying box heating for 20 minutes, taking out, continuously stirring uniformly, repeating for three times and obtaining the wave absorbing material.