| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane resin formative composition for cutting work applying excellent cutting workability and radiation shielding performance to a molding.SOLUTION: A polyurethane resin formative composition for cutting work contains polyol, polyisocyanate, and an inorganic filler having a true specific gravity of 4.0-6.0. A content of the inorganic filler based on the total weight of the polyol, the polyisocyanate, and the inorganic filler is 61-70%. A polyurethane resin molding for cutting work is formed by reacting and curing the composition, and molding the cured composition. The inorganic filler is preferably barium sulfate. |
