Patent Number: 
Section: claims

1. A method of making and using a nanocomposite material for shielding x-ray radiation generated from an X-ray beam tube operating at a voltage of 40 killivolts (kV) to 250 kV, comprising:fabricating the nanocomposite material comprisingforming a homogenous mixture ofa polyester polymer,an accelerator for crosslinking polymer chains of the polyester polymer, andPb3O4 nanopowder of Pb3O4 particles, wherein the Pb3O4 is present at a concentration of 10% to 50% by weight, andcasting the homogenous mixture in a mold or on a surface, andcuring the homogenous mixture to produce the nanocomposite material which is comprised of a crosslinked polyester material with the Pb3O4 particles uniformly distributed and embedded therein, wherein the nanocomposite material has a thickness of 0.2 cm to 20 cm; andpositioning the nanocomposite material in a location that provides shielding and attenuation of x-ray radiation;for at least one object and/or person selected from the group consisting of a target, a bystander, a practitioner, a patient, and a body part or region of a patient. 2. The method of claim 1, wherein the Pb3O4 concentration is in the range of 30% to 40%. 3. The method of claim 1, wherein the Pb3O4 concentration is 40%. 4. The method of claim 1, wherein the nanocomposite material has a thickness in the range of 0.2 to 16 cm. 5. The method of claim 1, wherein the nanocomposite material is applied to an existing structure.