▎ 摘　　要

NOVELTY - Wave-absorbing composite material with axially-folded honeycomb structure comprises folded honeycomb structure and wave absorbing agent coated on the surface of the folded honeycomb structure. The folded honeycomb structure is continuously folded for N times along the axial direction of honeycomb holes. The wave absorbing agent is prepared by mixing ferroferric oxide powder and graphene powder according to the weight ratio of (6-8):(2-3) and mixing. USE - Wave-absorbing composite material with axially-folded honeycomb structure used in military affairs, communications and medical treatment, national defense and military affairs. ADVANTAGE - The wave-absorbing composite material with axially-folded honeycomb structure has excellent wave absorbing performance, and high efficiency absorption of incident electromagnetic wave in the honeycomb hole of the vertical incidence and small angle, and strong designability and wave absorbing frequency band width. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of preparing wave-absorbing composite material with axially-folded honeycomb structure, which involves: (1) obtaining a wave-absorbing coating agent by weighing an adhesive composition and a wave absorbing agent according to the specified weight, taking an adhesive as a matrix, adding a diluent and a curing agent into the adhesive, adding the wave absorbing agent while stirring, uniformly mixing the adhesive composition and the wave absorbing agent to obtain a wave absorbing coating agent, and pouring the wave absorbing coating agent into an impregnation tank; (2) obtaining a folded honeycomb structure by designing a drawing of a folding honeycomb mechanism, wherein honeycomb holes are continuously folded for N times in the axial direction on the basis of a unit structure of a traditional honeycomb material with regular hexagon honeycomb holes to obtain a zigzag folding honeycomb structure, the inclination directions of the honeycomb structures on two adjacent sides are symmetrical about a horizontal line, the design is modeled in three-dimensional drawing software, and the folding honeycomb structure is obtained through 3D printing; (3) obtaining surface coating of the folded honeycomb structure by dipping the folded honeycomb structure in the dipping tank poured with the wave-absorbing coating agent for 5-15 minutes, taking out the folded honeycomb structure and placing the folded honeycomb structure on a stainless steel net until no wave-absorbing coating agent flows down along the folded honeycomb structure; (4) drying and curing by putting the folded honeycomb structure processed into a drying box for drying and heating, setting the temperature to be 90-110degrees Celsius, preserving the heat for 0.3-0.6 hours, then heating to 140degrees Celsius and preserving the heat for 0.8-1.2 hours, and continuously overturning the folded honeycomb structure in the process to prevent uneven impregnation of the lower portion and the upper portion of the honeycomb; (5) repeating the previous steps until the surface coating thickness of the folded honeycomb structure obtained reaches a target thickness value, and obtaining the desired product.