| abstract |
The present invention relates to a multi-layered high energy radiation shielding material using a polymer/lead-free metal composite material, a manufacturing method therefor, and an application thereof. More specifically, the present invention relates to a multi-layered high energy radiation shielding material comprising: a multi-layered substrate being in the form of a film, a sheet, or fabric and consisting of bismuth-tin alloy powder and polymer resin; and plate-shaped tungsten flakes which are inserted between the layers of the substrate and are arranged and fixed to the surface of the substrate in predetermined shapes and at regular intervals, wherein the multi-layered high energy radiation shielding material comprises multiple layers in which layers formed by the substrate and the tungsten flakes fixed thereto are alternately laminated, and the mutual positions of the tungsten flakes in layers adjacent to each other are disposed such that the centers of the flakes do not coincide. |