Flotation method and application of alpha-AlH3

A technology of flotation liquid and suspension liquid, which is applied in flotation, chemical instruments and methods, hydride purification/stabilization, etc. It can solve the problems of reducing the energy of energetic materials, increasing the impact sensitivity and friction sensitivity of propellant slurry, Poor stability and other problems, to achieve the effect of simple and efficient separation technology, low slurry sensitivity, and increased hydrogen content
CN110550607AActive Publication Date: 2019-12-10HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
Publication Date
2019-12-10

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Abstract

The invention relates to a flotation method and application of alpha-AlH3, and belongs to the technical field of energetic materials. Alpha crystal type AlH3 and non-alpha crystal type AlH3 have different inherent properties such as physical and chemical properties, surface adsorption characteristics, crystal appearance characteristics and the like, so that high-efficiency separation of alpha crystal type AlH3 and non-alpha crystal type AlH3 is realized by adopting a specific flotation solution by virtue of a separation and purification function of ultrasonic waves, and then high-quality alphacrystal type AlH3 and non-alpha crystal type AlH3 are obtained. Safety of an application of the high quality alpha crystal type AlH3 in composite high-energy solid propellants is verified through impact sensitivity and friction sensitivity experiments. The high-quality alpha crystal type AlH3 has high hydrogen content, and slurry sensitivity of the high-energy propellants based on the high-quality alpha crystal type AlH3 is low.
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Description

technical field

[0001] The present invention relates to a kind of α-AlH 3 The flotation method and its application belong to the technical field of energetic materials, more specifically, it relates to a high-quality α-AlH that can be applied in the field of propellants, explosives or other energetic materials 3 , and its use of liquid-phase ultrasonic-assisted flotation of high-quality α-AlH 3 , increasing AlH 3 Applicable methods in the field of energetic materials. Background technique

[0002] Aluminum hydride (AlH 3 ), also known as alane, is a promising high-energy additive for solid propellant formulations. According to theoretical calculations, using AlH 3 Instead of aluminum powder, the specific impulse of the solid propellant can be increased by at least 100N.s.kg -1 , and its combustion chamber and ejection gas temperature are lower than those of propellants containing aluminum powder, AlH 3 Releases 10% of its own weight in H during decomposition 2 , whic...

Claims

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