S-waveband flexible double-phase wave-absorbing coating and preparation method thereof

The invention relates to an S-waveband flexible double-phase wave-absorbing coating and a preparation method thereof. The coating comprises: a double-phase matrix which comprises an epoxy resin phaseand a nitrile rubber phase, wherein the double-phase matrix is formed by curing a biphasic matrix material, and the biphasic matrix material comprises epoxy resin and liquid nitrile rubber in a mass ratio of 85:(15-30); flaky carbonyl iron powder which is distributed in the biphasic matrix, wherein the mass ratio of the flaky carbonyl iron powder to the biphasic matrix material is (65-75):(25-35).According to the invention, the flexibility and impact strength of the coating are improved while the electrical property of the S waveband and the adhesive force of the coating are considered, the requirement of a curved surface target is met, the problem of hard and brittle bottleneck of the traditional S waveband coating is solved, and meanwhile, the coating has relatively strong weather resistance. According to the pr