▎ 摘　　要

NOVELTY - Preparation of chiral 1,1'-diacetylferrocene Schiff base/graphene composite wave-absorbing material comprises reacting 1,1'-diacetylferrocene and anhydrous ethanol to form a solution, slowly adding glacial acetic acid as catalyst, heating to 60 degrees C, electromagnetic stirring for 6-8 hours, adding chiral diamine and ferrous sulfate or cobalt chloride, continuously reacting for 10-12 hours, decompressing, filtering, rinsing filter cake using anhydrous ethanol and deionized water for 3 times, and vacuum-drying for 12 hours to obtain chiral 1,1'-diacetylferrocene Schiff base; and reacting graphene ethanol dispersion and 1,1'-diacetylferrocene Schiff base ethanol suspension at 40 degrees C for 2 hours, decompressing and filtering, drying filter cake at 40 degrees C for 24 hours, and ball-milling at 150 revolutions/minute for 30 minutes. USE - Method for preparing chiral 1,1'-diacetylferrocene Schiff base/graphene composite wave-absorbing material. ADVANTAGE - The composite wave-absorbing material is easy to manufacture, has low density, and has improved electromagnetic shielding and antielectromagnetic radiation properties. DETAILED DESCRIPTION - Preparation of chiral 1,1'-diacetylferrocene Schiff base/graphene composite wave-absorbing material comprises: (A) reacting 1,1'-diacetylferrocene and anhydrous ethanol at a mass-volume ratio of 1 g:15 mL to form a solution, slowly adding glacial acetic acid as catalyst, heating to 60 degrees C, electromagnetic stirring for 6-8 hours, adding chiral diamine and ferrous sulfate or cobalt chloride in the reaction solution, where the ratio of chiral diamine and ferrous sulfate or cobalt chloride is 2:1, continuously reacting for 10-12 hours, decompressing and filtering, rinsing filter cake using anhydrous ethanol and deionized water for 3 times, and vacuum-drying for 12 hours to obtain chiral 1,1'-diacetylferrocene Schiff base, where the mol ratio of chiral diamine, 1,1'-diacetylferrocene, and ferrous sulfate or cobalt chloride is 1:1: 2; and (B) complexing graphene composite to the chiral 1,1'-diacetylferrocene Schiff base in ethanol to obtain 1,1'-diacetylferrocene Schiff base ethanol suspension, ultrasonic dispersing at graphene in ethanol at 10-100 S/cm to obtain graphene ethanol dispersion, reacting graphene ethanol dispersion and 1,1'-diacetylferrocene Schiff base ethanol suspension in a PTFE reaction kettle at 40 degrees C for 2 hours, decompressing and filtering, drying filter cake at 40 degrees C for 24 hours, and ball-milling at 150 revolutions/minute for 30 minutes, where the composite wave-absorbing material comprises 5-10 mass% chiral 1,1'-diacetylferrocene Schiff base, 20-25 mass% graphene, and 70 mass paraffin matrix.