| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite sandwich structure having high durability without penetration of moisture inside a core, which is tough, scratch-proof, easily repaired, light and inexpensive. SOLUTION: The composite sandwich structure consists of surface sheets made of a carbon fiber reinforced composite material containing about 45% in a weight ratio of an epoxy resin whose flowability is controlled and a core made of a polyetherimide resin foam. |
