Wave-absorbing film and preparation method thereof

• Main Authors: HAO BIN, XU ZHAOXUAN
• Format: Patent
• Language: Chinese; English
• Published: 03.11.2023
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS

The invention discloses a wave-absorbing film and a preparation method thereof. The wave-absorbing film comprises a base material and a wave-absorbing layer arranged on the base material, wherein the wave absorbing layer comprises a base body and wave absorbing units, and the multiple wave absorbing units are arranged in the base body in a dot matrix arrangement mode; the wave absorbing layer is made of a soft magnetic composite material and a polymer elastomer, and the mass fraction of the soft magnetic composite material in the wave absorbing layer is 10-80%. According to the wave-absorbing film and the preparation method thereof, the wave-absorbing layer adopts the plurality of wave-absorbing units which are arranged in the matrix in the form of dot matrix arrangement, and through the structural design of regular arrangement, the matching degree between the impedance of the wave-absorbing film and the impedance of a free space can be effectively improved, the effective absorption bandwidth is increased, an