| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane foam which can control an occurrence of internal fracture at the time of crushing treatment and has sufficient endurance.SOLUTION: A polyurethane foam is obtained by foaming and curing a polyurethane foam raw material containing a polyol component, an isocyanate component, and a foam stabilizer, wherein the foam stabilizer comprises a silicone surfactant having a bubble-communicating behavior. The silicone surfactant is mixed with the polyurethane foam raw material in a ratio of 0.05 to 0.02 pt.mass based on 100 pts.mass of the polyol component. |
