Composite materials (CM) consisting of polysiloxane rubber filled with lanthanide acetylacetonates, acetates, carboxylates and bismuth (III) and thorium (IV) fluorides were tested as X-ray shielding materials. It has been established that materials containing bismuth and thorium fluorides are superior in protective properties to the other studied materials, as well as to the convenient composites based on lanthanide oxides. The values of half value layer (HVL) of the materials based on BiF₃(H₂O) (79% wt) and ThF₄(H₂O) (69% wt) at X-ray irradiation with photon energy range 10–45 keV reach 0.20 mm. The obtained materials are flexible and thermally stable up to 300 °C.

测试了由填充有镧系元素乙酰丙酮化物，乙酸盐，羧酸盐和氟化铋（III）和氟化（（IV）的聚硅氧烷橡胶组成的复合材料（CM）作为X射线屏蔽材料。已经确定，包含氟化铋和氟化or的材料在保护性能方面优于其他研究材料以及基于镧系元素氧化物的方便复合材料。基于BiF ₃（H ₂ O）（79％wt）和ThF ₄（H ₂ O）（69％wt）的材料在光子能量范围为10-的X射线辐射下的半值层（HVL）值45 keV达到0.20毫米。所获得的材料是柔性的，并且在高达300°C的温度下具有热稳定性。