Delayed quick cure rocket motor liner

Details Delayed quick cure rocket motor liner Delayed quick cure rocket motor liner

1985-11-12

1987-05-05

Lusignan, Michael R.

Coating processes

Interior of hollow article coating

4273855, 528 55, 528 58, B05D 302, B05D 722, C08G 1808, C08G 1838

Patent

active

046631968

ABSTRACT:
An improvement to the process of applying a rocket motor liner to an inside surface of a rocket motor casing by coating the casing with a rocket motor liner composition and then curing the liner composition. Typical rocket motor liner compositions include the product of a hydroxyl-terminated polybutadiene prepolymer; a diisocyanate curing agent for forming urethane linkages with said prepolymer; a trifunctional aziridine bond promoter; a filler; and a curing catalyst comprising maleic anhydride, magnesium oxide, and triphenyl bismuth. This invention may use an alkaline carbon black filler and/or a curing catalyst which does not include magnesium oxide.

REFERENCES:
patent: 4184031 (1980-01-01), Graham et al.
patent: 4379903 (1983-04-01), Reed et al.

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