| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat insulating and sound absorbing material for aircraft which is a flexible relatively inexpensive heat insulating and sound absorbing material having high heat insulating and sound absorbing properties and adapted to new particularly severe required specifications of the aircraft. SOLUTION: This material is obtained by uniformly mixing 40-80% of highly heat-resistant inorganic fibers maintaining high-temperature strength at≥1,000°C with 20-60% of organic fibers, heat-treating the resultant loose fibrous material and thereby forming the whole into a mat. The thickness of the resultant heat insulating and sound absorbing material is 8-50 mm. The organic fibers are composed of 10-50% of heat-resistant organic fibers having≥200°C melting point and 10-25% of low-melting organic fibers, based on 40-80% of the inorganic fibers. COPYRIGHT: (C)2008,JPO&INPIT
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