本发明公开了一种硼钐钆共掺高分子基中子屏蔽材料，包括作为基体的高分子材料和作为掺杂组分的能够吸收中子的核素。所述核素为B、Sm和Gd。所述材料中，B2O3含量为0. 1～3wt%, Sm2o3含量为0 . 1～5wt%,Gd2O3含量为0 . 1~5wt%。本发明通过增加掺入中子屏蔽相成分、调整比例等方法提高材料的中子屏蔽性能，最终通过实验优化，制备出一种兼具分散型、中子屏蔽能力、力学性能以及热稳定性高的高分子复合材料，为小型反应堆的高分子基中子屏蔽系统提供候选材料。

The present invention discloses a boron samarium gadolinium co-doped polymer neutron shielding material, including a polymer material as a matrix and a neutron-absorbing nuclear element as a doped component. The described nuclei are used for B, Sm, and Gd. In the described materials, B2O3 was 0.1 to 3 wt%, Sm 2 o 3 was 0.1 to 5 wt%, and Gd 2 O 3 was 0.1 to 5 wt%. The present invention improves the neutron shielding performance of the material by increasing the neutron shielding phase composition and adjusting the ratio. Finally, it produces a polymer composite material with high dispersion, neutron shielding capability, mechanical properties and thermal stability, and provides a candidate material for the polymer-based neutron shielding system of small reactors.