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    • 8. 发明授权
    • Magnetically traceable explosives with stability and a method for the
preparation thereof
    • 具有稳定性的磁性可追溯炸药及其制备方法
    • US4537645A
    • 1985-08-27
    • US565571
    • 1983-12-27
    • Tadashi YamaguchiTakayuki OnoMichitoshi HirataToshihiko Yokoyama
    • Tadashi YamaguchiTakayuki OnoMichitoshi HirataToshihiko Yokoyama
    • C06B21/00C06B23/00C06B45/18
    • C06B45/18C06B21/00C06B23/008Y10S149/123
    • The invention provides a novel magnetically traceable or detectable explosive blended with a magnetic ferrite powder which facilitates the detection of the misfired explosive, e.g. dynamite, remaining in the field after blasting by a magnetic means but not to adversely affect the stability of the explosive. The ferrite powder is freed of any free alkalinity on the surface before blending with the explosive either by washing with water, neutralization with a dilute acid, reaction with an acid followed by washing with water or neutralization with an alkali and/or by coating with a polymeric material on the particles. The most efficient method for the coating of the ferrite powder with a polymeric material is the in situ polymerization of a radical-polymerizable monomer in contact with the ferrite particles in the presence of hydrogensulfite ions and the explosives blended with such a polymer-coated ferrite powder retain their stability even after a prolonged storage.
    • 本发明提供了一种新颖的磁性可追踪或可检测的爆炸物与磁性铁氧体粉末混合,这有助于检测失火的炸药,例如, 炸药,通过磁力手段在爆破后留在现场,但不会不利地影响炸药的稳定性。 通过用水洗涤,用稀酸中和,与酸反应,然后用水洗涤或用碱中和,和/或通过涂覆,铁素体粉末在与爆炸物混合之前,没有任何游离碱度 颗粒上的聚合材料。 用聚合物材料涂覆铁氧体粉末的最有效的方法是在亚硫酸氢盐离子存在下,与铁氧体颗粒接触的自由基聚合单体的原位聚合,并且与这种聚合物涂覆的铁氧体粉末 保持其稳定性即使长期存放。
    • 9. 发明授权
    • Method for the preparation of magnetically traceable explosives
    • 磁性可追溯炸药的制备方法
    • US4455179A
    • 1984-06-19
    • US315136
    • 1981-10-26
    • Tadashi YamaguchiTakayuki OnoMichitoshi HirataToshihiko Yokoyama
    • Tadashi YamaguchiTakayuki OnoMichitoshi HirataToshihiko Yokoyama
    • C06B21/00C06B23/00C06B45/18C06B43/00
    • C06B21/00C06B23/008C06B45/18Y10S149/123
    • The invention provides a novel magnetically traceable or detectable explosive blended with a magnetic ferrite powder which facilitates the detection of the misfired explosive, e.g. dynamite, remaining in the field after blasting by a magnetic means but not to adversely affect the stability of the explosive. The ferrite powder is freed of any free alkalinity on the surface before blending with the explosive either by washing with water, neutralization with a dilute acid, reaction with an acid followed by washing with water or neutralization with an alkali and/or by coating with a polymeric material on the particles. The most efficient method for the coating of the ferrite powder with a polymeric material is the in situ polymerization of a radical-polymerizable monomer in contact with the ferrite particles in the presence of hydrogensulfite ions and the explosives blended with such a polymer-coated ferrite powder retain their stability even after a prolonged storage.
    • 本发明提供了一种新颖的磁性可追踪或可检测的爆炸物与磁性铁氧体粉末混合,这有助于检测失火的炸药,例如, 炸药,通过磁力手段在爆破后留在现场,但不会不利地影响炸药的稳定性。 通过用水洗涤,用稀酸中和,与酸反应,然后用水洗涤或用碱中和,和/或通过涂覆,铁素体粉末在与爆炸物混合之前,没有任何游离碱度 颗粒上的聚合材料。 用聚合物材料涂覆铁氧体粉末的最有效的方法是在亚硫酸氢盐离子存在下,与铁氧体颗粒接触的自由基聚合单体的原位聚合,并且与这种聚合物涂覆的铁氧体粉末 保持其稳定性即使长期存放。