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    • 2. 发明授权
    • Method of making multi-base propellants from pelletized nitrocellulose
    • 从造粒硝化纤维制备多基础推进剂的方法
    • US06692655B1
    • 2004-02-17
    • US09803236
    • 2001-03-09
    • Laura J. MartinsRichard B. CragunGary K. LundMichael V. WellsVincent E. Mancini
    • Laura J. MartinsRichard B. CragunGary K. LundMichael V. WellsVincent E. Mancini
    • C06B3122
    • C06B45/105C06B21/0058C06B45/22
    • 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.
    • 在制造多基础推进剂的这种方法中,颗粒状硝化纤维素在静态不敏感的液体弹性体前体或非增塑剂中涂覆,同时在非溶剂稀释剂中润湿,优选不存在增塑剂。 然后将非溶剂稀释剂基本上(如果不是完全)从包被的硝化纤维素中除去。 然后,将涂覆的颗粒状硝化纤维素与增塑剂和任选的其它成分和填料混合,包括高能燃料如硝基胍。 然后将推进剂制剂浇铸,并任选地用可接受的固化剂如二异氰酸酯或多异氰酸酯固化。 所得到的材料可以是视觉上的(即肉眼)。 此外,在加工过程中存在的涂覆的硝化纤维素颗粒降低了对静电放电的敏感性。