Method for testing particle size and particle size distribution of aluminum trihydride

A technology of aluminum hydride and particle size distribution, applied in particle size analysis, particle and sedimentation analysis, measuring devices, etc., can solve the problems of testing energetic materials safety hazards and other problems, and achieve the effect of good precision
CN109752292AInactive Publication Date: 2019-05-14HUBEI 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
2019-05-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for testing the particle size and particle size distribution of aluminum trihydride. The method applies a wet laser diffraction method to test the particle size and particle size distribution of AlH3. The method comprises the steps that (1) a dispersion medium is added into the aluminum trihydride, and the dispersion medium is a lecithin-butyl acetate solution withthe mass fraction being (1-3)% or a nonylphenol polyoxyethylene ether-butyl acetate solution with the mass fraction being (1-3)%; (2) combined ingredients in the step (1) are dispersed, and thus a completely-dispersed AlH3 suspension system is prepared; and (3) the particle size and particle size distribution of the aluminum trihydride in a suspension treated in the step (2) are measured through awet laser particle analyzer. According to the method, the relative standard deviation of the multiple measuring results of the particle size is not greater than 5%, and the precision of the method isgood.
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Description

technical field

[0001] The invention relates to a method for testing the particle size and particle size distribution of aluminum trihydride. Background technique

[0002] H 3 It is a new type of selective reducing agent, which can be used as hydrogen storage material, hydrogen source of fuel cell and polymerization catalyst. Since AlH 3 With high heat of combustion and specific impulse, it is widely studied in solid propellants as a new type of high-energy propellant fuel, and is used to improve the combustion performance and energy performance of solid propellants. H 3 The particle size and particle size distribution are closely related to its performance and are important indicators for product quality monitoring. H 3 As a new type of energetic material, there is no ready-made particle size test method available. At present, the most widely used particle size testing method is the laser diffraction method, which is divided into wet method and dry method. The wet me...

Claims

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