▎ 摘　　要

NOVELTY - Anti-radiation composition comprises 3-9 pts. wt. boron oxide, 3-9 pts. wt. barium oxide, 1-7 pts. wt. lithium oxide, 0.2-1.5 pts. wt. graphene, 10-18 pts. wt. ferroferric oxide, 1.5-5.5 pts. wt. anti-settling agent, 1-3 pts. wt. dispersant and 80-120 pts. wt. dispersion solvent. USE - The composition is useful for preparing anti-radiation polyurethane film. ADVANTAGE - The composition: has excellent electromagnetic shielding effect, compatibility, durability and waterproof performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a preparing the anti-radiation composition, comprising smelting boron oxide, barium oxide and lithium oxide at 1400-1500℃, then quenching in cold water, crushing and grinding to obtain boron barium lithium powder, adding an anti-settling agent and a dispersing agent into a solvent for dispersion, stirring and dispersing, then adding the boron barium lithium powder, continuing to stirring, then adding ferro ferric oxide, continuing to stirring, then adding graphene and continuing to stirring to obtain the final product. a anti-radiation polyurethane film, comprising 33-43 pts. wt. anti-radiation composition, 350-470 pts. wt. polyurethane resin, 1-4 pts. wt. wetting agent, 0.1-0.5 pts. wt. defoaming agent and 120-200 pts. wt. mixing solvent; and a preparing the anti-radiation polyurethane film, comprising mixing and stirring polyurethane resin, a mixing solvent, anti-radiation composition, a wetting agent and a defoaming agent and defoaming in vacuum to obtain mixed slurry, coating the mixed slurry on a release material, heating, drying, cooling, forming a film on the release material and separating the release material from the film to obtain the product.