| abstract |
The present invention relates to a method for producing radioactive cut crust paper by selecting barium sulfate and a water soluble urethane binder, A barium sulfate-sulphate mineral powder composition, a radiation blocker prepared by mixing silver, brass and a carbon nano solution, and a calcium sulfate radiation barrier composition prepared by mixing water and a water-soluble acrylic binder, and molding, cutting and drying To a method of manufacturing a radiation shielding gypsum board. |