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Thermal decomposition detection method for propellant containing AlH3

A detection method and thermal decomposition technology, which is applied to the analysis of materials, instruments, etc., can solve the problems that the thermal decomposition of AlH3 cannot be monitored through pressure or mass changes, and achieve the effect of meeting the needs of thermal stability evaluation, simple equipment, and convenient operation

Pending Publication Date: 2021-11-19
HUBEI INST OF AEROSPACE CHEMOTECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In such a complex system, propellant components such as plasticizers and oxidants may volatilize, migrate or decompose, and it is impossible to monitor AlH through pressure or mass changes. 3 Thermal decomposition

Method used

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  • Thermal decomposition detection method for propellant containing AlH3
  • Thermal decomposition detection method for propellant containing AlH3
  • Thermal decomposition detection method for propellant containing AlH3

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Embodiment Construction

[0028] The implementation manner of this solution will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the solution, rather than exhaustive of all the embodiments. It should be noted that, in the case of no conflict, the embodiments in this solution and the features in the embodiments can be combined with each other.

[0029] The terms "first", "second", etc., if present, in the description and claims and the above drawings are used to distinguish similar items and not necessarily to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusio...

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Abstract

The invention discloses a thermal decomposition detection method for a propellant containing AlH3. The method comprises the following steps: detecting the decomposition rate of AlH3 contained in a propellant sample under a heating condition by using a thermal decomposition detection device; wherein the thermal decomposition detection device comprises a sample gas collection bag, a gas collection tank and a vacuum pump which are sequentially connected through a pipeline; a first valve is arranged between the sample gas collection bag and the gas collection tank, and a second valve is arranged between the gas collection tank and the vacuum pump. The method is not limited by sample components, test temperature and test time, the thermal decomposition rate of the AlH3 in a complex system is obtained by directly measuring the content of the characteristic gas, the thermal decomposition kinetic parameters of the AlH3 are obtained, equipment is simple, operation is convenient and fast, and the thermal stability evaluation requirement of the AlH3 and the propellant of the AlH3 can be met.

Description

technical field [0001] The invention relates to the field of thermal stability evaluation of energetic materials, in particular to an AlH-containing 3 Propellant thermal decomposition detection method. Background technique [0002] Aluminum hydride (AlH 3 ) Higher hydrogen storage capacity (volume hydrogen storage 0.148kgH 2 / L, which is more than twice the density of liquid hydrogen; the mass hydrogen storage reaches 10.08%), and the relatively fast hydrogen release rate at low temperature (less than 100°C), is regarded as the most promising high-energy fuel for solid propulsion Propellants can increase propellant energy, reduce the average molecular weight of gas, and improve combustion efficiency, so they have high hopes in the propellant field. But AlH 3 It is a metastable structure, easy to oxidize in air, sensitive to water, poor in chemical stability and thermal stability, easy to decompose and decompose hydrogen in long-term storage or slightly higher temperature...

Claims

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Application Information

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IPC IPC(8): G01N7/16G01N7/18
CPCG01N7/16G01N7/18
Inventor 曹蓉罗胤杨根彭松池旭辉裴宝林张峰涛赵程远程海燕封学华
Owner HUBEI INST OF AEROSPACE CHEMOTECH
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