Method of making multi-base propellants from pelletized nitrocellulose
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C06B-031/22
C06B-021/00
C06B-045/04
C06B-031/50
F42B-015/00
출원번호
US-0803236
(2001-03-09)
발명자
/ 주소
Martins, Laura J.
Cragun, Richard B.
Lund, Gary K.
Wells, Michael V.
Mancini, Vincent E.
출원인 / 주소
Alliant Techsystems Inc.
대리인 / 주소
TraskBritt
인용정보
피인용 횟수 :
15인용 특허 :
11
초록▼
In this method for making multi-base propellants, pelletized nitrocellulose is coated with an electrostatically insensitive liquid elastomer precursor or non-plasticizer while wetted in a non-solvent diluent, preferably in the absence of plasticizers. The non-solvent diluent is then substantially, i
In this method for making multi-base propellants, pelletized nitrocellulose is coated with an electrostatically insensitive liquid elastomer precursor or non-plasticizer while wetted in a non-solvent diluent, preferably in the absence of plasticizers. The non-solvent diluent is then substantially, if not completely, removed from the coated nitrocellulose. Then, the coated pelletized nitrocellulose is mixed with a plasticizer and optionally other ingredients and fillers, including energetic fuels such as nitroguanidine. The propellant formulation is then cast, and optionally cured with an acceptable curative, such as a diisocyanate or polyisocyanate. The resulting material may be visually (i.e., to the naked eye) homogeneous. Also, the coated nitrocellulose pellets present during processing have reduced sensitivity to electrostatic discharge.
대표청구항▼
In this method for making multi-base propellants, pelletized nitrocellulose is coated with an electrostatically insensitive liquid elastomer precursor or non-plasticizer while wetted in a non-solvent diluent, preferably in the absence of plasticizers. The non-solvent diluent is then substantially, i
In this method for making multi-base propellants, pelletized nitrocellulose is coated with an electrostatically insensitive liquid elastomer precursor or non-plasticizer while wetted in a non-solvent diluent, preferably in the absence of plasticizers. The non-solvent diluent is then substantially, if not completely, removed from the coated nitrocellulose. Then, the coated pelletized nitrocellulose is mixed with a plasticizer and optionally other ingredients and fillers, including energetic fuels such as nitroguanidine. The propellant formulation is then cast, and optionally cured with an acceptable curative, such as a diisocyanate or polyisocyanate. The resulting material may be visually (i.e., to the naked eye) homogeneous. Also, the coated nitrocellulose pellets present during processing have reduced sensitivity to electrostatic discharge. ant, polyethylene oxide, polyalcohol, glucose, sorbitol, aminoalcohol, polyethylene glycol, amino oxide, amine salt, tetraammonium salt, pyrimidine salt, sulfonium salt, phosphonium salt, polyethylene polyamine, carboxylate, sulfonate, sulfate, phosphate, phosphonate, amino acid, betain, aminosulfate, sulfobetain and mixtures thereof. 7. A magnetorheological fluid prepared by the process of claim 1, which comprises a mobile phase of water in oil emulsion and magnetic particles coated with a hydrophilic surfactant thereon and dispersed in the mobile phase with 5 to 50% by volume relative to the total volume.
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이 특허에 인용된 특허 (11)
Neidert Jamie B. (Brigham City UT) Askins Robert E. (Huntsville AL), Castable double base propellant containing ultra fine carbon fiber as a ballistic modifier.
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Leneveu Louis (Chateaulin FRX) Treneules Didier (Chateaulin FRX), Fragmentable charges of propelland powder coated with polyvinyl nitrate, and the process for their manufacture.
Poulter Larry W. ; Nelson Ronald W. ; Smalley ; Jr. Robert B. ; Hawkins Marvin C., Robust propellant liner and interfacial propellant burn rate control.
Olden, Thomas A.; Wrigglesworth, Walter, Flight vehicles including electrically-interconnective support structures and methods for the manufacture thereof.
Stec, III,Daniel; Cheng,Gartung; Fuchs,Brian E.; Gillen,Gerard; Mehta,Neha, Methods for making and using high explosive fills for very small volume applications.
Worrell, William J.; Vaughan, Benjain R.; Archambault, Jeffrey D.; Fils-Aime, Milca, Methods of preparing nitrocelluse based propellants and propellants made therefrom.
Worrell, William J.; Vaughan, Benjamin R.; Archambault, Jeffrey D.; Fils-Aime, Milca, Methods of preparing nitrocelluse based propellants and propellants made therefrom.
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