Binder system for crosslinked double base propellant

Details Binder system for crosslinked double base propellant Binder system for crosslinked double base propellant

1979-03-05

1995-11-21

Miller, Edward A.

Explosive and thermic compositions or charges

Structure or arrangement of component or product

Solid particles dispersed in solid solution or matrix

149 198, C06B 4910

Patent

active

054683114

ABSTRACT:
An improved crosslinked double base propellant composition is provided which has an improved binder system. The binder system is based on nitrocellulose (NC) having an intrinsic viscosity of from about 0.4 dl./gram to about 1.5 dl./gram and a polyester polyol or polyether polyol (polyol), in which the weight ratio of NC/polyol is from about 0.03/1 to about 0.8/1. The binder crosslinking agents are diisocyanates, and the ratio of NCO groups of the diisocyanates to combined OH groups of nitrocellulose and polyol is from about 0.7/1 to 1.2/1. Energetic plasticizer such as nitroglycerin comprises from about 68% to about 82% by weight of the binder. The binder contains a stabilizer and is capable of high solids loading, i.e., 70% to 77% solids.

REFERENCES:
patent: 3711344 (1973-01-01), Pierce
patent: 3956890 (1976-05-01), Davis
patent: 3994946 (1976-11-01), Dunigan et al.
patent: 4011114 (1977-03-01), Allabashi
patent: 4072546 (1978-02-01), Winer
patent: 4645261 (1987-02-01), Baczuk

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