| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane foam capable of forming a lightweight structure which has a density lower than that of a structure formed from a conventional polyurethane foam and is capable of satisfying requirements concerning an oil burner test (burning resistance) without deteriorating its mechanical strength, for use e.g. in the aeronautical area. SOLUTION: The polyurethane foam contains 15-30 pts.wt. graphite, 4-10 pts.wt. hollow filler made of a glass material (e.g. a glass hollow microsphere) and 50-70 pts.wt. isocyanate, relative to 100 pts.wt. polyol. COPYRIGHT: (C)2006,JPO&NCIPI |
