BORON-BASED NEUTRON-PROTECTIVE MATERIAL Russian patent published in 2015 - IPC G21F1/00 C03C27/00 

FIELD: chemistry.

SUBSTANCE: boron-based material having a deformation stability of ΔL/L₀=3.0÷7.5% at 600°C is produced by conducting a reaction of sodium silicate Na₂O(SiO₂)_n in an aqueous solution of caustic soda with trimethylammonium decahydroclosodecaborate (Me₃NH)₂B₁₀H_10. The reaction solution is boiled until trimethylamine formed by the reaction of caustic soda and (Me₃NH)₂B₁₀H₁₀ is removed completely, then dried with increasing the temperature to 300°C; that makes prepare the material described by chemical formula: [Na₂O(SiO₂)n]m[Na₂B₁₀H₁₀]k, wherein: n is an initial sodium silicate characteristics via a silicate module, which varies within the range of 2.5÷3.0; m:k=7.0÷1.9; a decahydroclosodecaborate anion binds to sodium atoms both of sodium silicate, and sodium silicate by multicentre reactions resultant in forming spatial supramolecular structures.

EFFECT: producing the neutron-protective material with no high energy costs and additional equipment.

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