Design of a remote sprayed fast-curing gamma-radiation-shielding material used in the collection of the leaked radioactive waste

摘要

This work designed and measured a remote sprayed fast-curing gamma-radiation-shielding material that is used to encapsulate and collect radioactive wastes from places far away from high radiation areas in case of radioactive waste leakage accidents. The influence of the chemical composition design on curing time, shielding performance, thermal stability and mechanical performance of the gamma-radiation-shielding material is discussed. Results showed that with the addition of catalysts, the cream time of the gamma-radiation-shielding material increased remarkably to allow it to be ejected, while the tack-free time of the solidified composite material decreased to guarantee good encapsulation of the radioactive wastes. Due to the denser microstructure, the gamma-radiation-shielding material with bis(2-dimethylaminoethyl) ether and phosphorus flame retardant V-490 show better gamma-radiation-shielding performance and mechanical properties than other products. When the shielding functional filler content reached 60%, the composite presented excellent comprehensive properties and a good application prospect.