COMPOSITE MATERIAL FOR PROTECTION AGAINST NEUTRON RADIATION AND METHOD OF ITS PRODUCTION Russian patent published in 2025 - IPC G21F1/00 

FIELD: performing operations.

SUBSTANCE: invention relates to a composite material for protection against neutron radiation. Material includes high-pressure polyethylene, ground titanium hydride shot, boron carbide B₄C, with the following ratio of components, wt.%: HPP – 45-55, ground titanium hydride shot TiH_1.7 – 42.5-47.5, boron carbide B₄C – 2.5-7.5. In the method of producing the composite material, polyethylene powder is dried, titanium hydride shots are ground in an impact mill, further, it and boron carbide are separately sieved through sieve of 0.64 mcm and the obtained fraction of ground titanium hydride shot and boron carbide is dried in a vacuum drying cabinet at 90 °C for 20 minutes. Then the components of the composite material are mixed mechanically in a planetary mill without addition of grinding bodies. Components of composite material are loaded into preheated to 160 °C mould, then the mould is placed in a vacuum drying cabinet heated to 160 °C, for 40 min. Then, pressing is performed by hot pressing method and mould is cooled down to room temperature with further extraction of finished composite material.

EFFECT: improved neutron-protective characteristics of the material while maintaining high physical and mechanical properties.

2 cl, 4 tbl