Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1983-05-27
1986-04-15
Waltz, Thomas A.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564 12, 564 13, 423302, C07F 936
Patent
active
045829322
ABSTRACT:
Highly fire resistant composites or laminates particularly applicable as structural components in aircraft, e.g. in the engine nacelle, as part of the acoustic panel-fire wall structure, and capable of withstanding a 2,000.degree. F. flame temperature, comprising incorporating an additive in the form of a polymeric phosphorylated amide, into a resin, e.g., a polyimide or an epoxy resin, such additive being soluble in the resin. The resulting resin containing the additive is then applied to or impregnated into a substrate such as glass fiber cloth or graphite fiber, to form a composite structure which is then cured. The resulting cured composite when subjected to high temperatures of the order of, e.g., a 2,000.degree. F. flame temperature, forms a resin char of reduced thermal conductivity which holds the fibers of the laminate together and maintains the structural stability and integrity of the laminate.
REFERENCES:
patent: 2968668 (1961-01-01), Tolkmith
patent: 3258484 (1966-06-01), Tolkmith
patent: 3282895 (1966-11-01), Franz et al.
patent: 4092108 (1978-05-01), Valko et al.
patent: 4162247 (1979-07-01), Mayer et al.
Byrd Norman R.
Peek Daniel C.
Geldin Max
McDonnell Douglas Corporation
Waltz Thomas A.
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