|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||149/198 ; 149/7 ; 149/11 ; 149/20|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 12 인용 특허 : 0|
Mechanical properties of composite modified double-base propellant are improved by coating fillers for the propellant with a crosslinked, binder insoluble coating having reactive surface isocyanate groups. The reactive isocyanate groups become chemically bound to the nitrocellulose binder of the propellant during propellant cure. Failure of the propellant at the binder-filler interface under conditions of stress is substantially reduced.
In the process of preparing composite modified double-base propellant by slurry casting, the improvement whereby dewetting of filler particles from the binder under conditions of stress is reduced said improvement comprising admixing with the uncured propellant ingredients at least one filler selected from the group consisting of inorganic oxidizer salts, organic oxidizers and metal fluids, said filler having a crosslinked, binder-insoluble coating having reactive surface-NCO groups, and curing the resulting propellant.