Fire resistant composites

Details Fire resistant composites Fire resistant composites

1980-04-21

1981-12-29

Hoke, V. P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

260 458NT, 260 459AA, 260 459E, 260 459AM, 428413, 428417, 428429, 428435, 428460, 428461, 128463, 428474, 428522, 428524, 260 459NP, 428273, 428279, 4284735, 428458, C08K 553

Patent

active

043081975

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 an ammonium salt, or an amine salt, of a phosphonic acid or a phosphinic acid, into a resin, e.g., a polyimide or an epoxy resin, such additive being soluble in the resin. The resulting resin containing the additive, e.g., the ammonium, or amine, salt of phenyl phosphonic or phenyl phosphinic acid, 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: 2519388 (1950-08-01), MacMillan et al.
patent: 2724718 (1955-11-01), Stiles et al.
patent: 3185728 (1965-05-01), Schallenberg et al.
patent: 3280131 (1966-10-01), Wakeman et al.
patent: 3322716 (1967-03-01), Klein et al.
patent: 3345432 (1967-10-01), Gillham et al.
patent: 3363032 (1968-01-01), Fitch
patent: 3401185 (1968-10-01), Meinhardt
patent: 3408390 (1968-10-01), Jungerman et al.
patent: 3668237 (1972-06-01), Cyba
patent: 3804669 (1974-04-01), Buckstie
patent: 3944518 (1976-03-01), Burrows et al.
patent: 3981832 (1976-09-01), Godfried
patent: 4077860 (1978-03-01), Via

Affiliated with

Also associated with

Rating

Fire resistant composites does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fire resistant composites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire resistant composites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1018001