The invention discloses a wave-absorbing material for automotive radar and a preparation method thereof, which is characterized in that the raw materials of the wave-absorbing material for automotive radar have the following mass ratio: 50-80 parts of polycarbonate resin, 3-20 parts of a toughening agent, 5-30 parts of a wave-absorbing filler, 10-20 parts of fibers, 0.1-3 parts of a flame retardant, 0.1-1 part of a light stabilizer, 0.3-2 parts of a lubricant, and 0.3-2 parts of an antioxidant.
The above components are mixed and then added into a twin-screw extruder for melt blending, followed by extrusion granulation; the pellets are dried and then melted in a single-screw extruder, with plate or semi-circular cover products obtained through cooling and shaping, traction and cutting.
The wave-absorbing material provided by the invention has the advantages of high wave-absorbing efficiency, flame retardancy and high temperature resistance, and is suitable for the housing of automotive millimeter wave radar.
Country Code: CN
Application Number: CN202311846365.1
