Electromagnetic-radiation-resisting rare earth oxide polymer composite material and preparation method thereof

The invention relates to an electromagnetic-radiation-resisting rare earth oxide polymer composite material and a preparation method thereof. The composite material comprises components of, by weight: 50 to 95% of polymer and 50 to 5% of rare earth oxide. The polymer is adopted as a substrate, the rare earth oxide powder is adopted as an electromagnetism absorbing material, and the electromagnetic-radiation-resisting polymer-based composite material is obtained through twin screw extrusion. Compared to existing technologies, the composite material provided by the invention has both the electromagnetic-radiation-resisting function and good mechanical properties.