Wave-absorbing honeycomb capable of preventing surface cracking and preparation method of wave-absorbing honeycomb

The invention discloses an anti-surface-cracking wave-absorbing honeycomb and a preparation method thereof.The preparation method comprises the steps of semi-cured honeycomb manufacturing and wave-absorbing honeycomb manufacturing, and the wave-absorbing honeycomb manufacturing includes the steps that semi-cured honeycomb blocks are sliced to obtain honeycomb pieces with the appropriate thickness, the semi-cured honeycomb pieces are soaked in wave-absorbing coating and dried, and the wave-absorbing honeycomb pieces are obtained; according to the method, the semi-cured aramid fiber honeycomb is used as the honeycomb base material for dipping the wave-absorbing honeycomb, the surface of the aramid fiber honeycomb is relatively rough in the semi-curing process, resin is not completely cured, and the wave-absorbing honeycomb is obtained. According to the present invention, the surface of the honeycomb is coated with the wave-absorbing resin, and the wave-absorbing resin has a certain fluidity during the high-temp