Background: With the rapid development of radiation technology

demands of functional and structural integration have been put forward for the photon shielding material. Purpose: To meet this need

a new type of carbon fiber reinforced polyimide composite has been designed and tested. Methods: Shielding properties of composite materials of different PbO contents are modeled based on MCNP. According to the simulation results

shielding material is designed and prepared. And its shielding properties

mechanical properties as well as radiation-resistant properties are tested. Results: Through photon shield experiment and mechanical performance experiment

the composite material has good shielding performance for photons. Its photon transmission rate at thickness of 4.80-mm is 54.13% for137Cs(662 keV) gamma-ray

bend strength and stretch strength at 1.2-mm thickness can reach 263 MPa and 369 MPa

respectively. After 90-kGy irradiation

the stretch strength can retain83.47% of its performance. Conclusion: Therefore

the material possesses great application potential in medicine and industry such as gamma ray flaw detection.