A new-type gradient nuclear radiation shielding material was prepared for utilizing Lu

2

O

3

tungsten and polyethylene as main raw materials by mechanical blending method handled with coupling agent

acid and alkali reaction method and in-situ reaction.Afterwards hot-press processing and layered hot-pressing superimposition was used to process materials and then gradient materials were obtained.At last

monolayer and gradient materials were characterized and tested.The results indicated that: the new gradient material had good tensile properties.Meanwhile

beta and gamma rays could be shielded well

it oneself had lead-free poison

the lasting shielding effectiveness

the good comprehensive shielding performance

and it could flexibly adjust the types and the order of monolayer materials for getting corresponding gradient materials according to the specific radiation environment.The gradient materials had a good application future.