Method for detecting acetonitrile content in composite solid propellant by using gas chromatography

Abstract

The invention provides a method for detecting the content of acetonitrile in a composite solid propellant by using gas chromatography. The method comprises the following steps: preparing an internal standard solution, preparing a to-be-detected sample solution, selecting gas chromatography detection conditions, drawing a correction curve and detecting a to-be-detected sample. According to the invention, the content of the residual acetonitrile in the composite solid propellant can be accurately detected, and the method is good in measurement effect, accurate in measurement, simple, convenient, rapid, good in repeatability and suitable for measurement of trace components.

Description

technical field

[0001] The invention relates to the field of detection of solid rocket motor composite solid propellant, in particular to a method for detecting the content of acetonitrile in composite solid propellant by gas chromatography. Background technique

[0002] In the propellant used in a certain engine, the "wet addition" process of bonding agent is used. It first disperses the bonding agent in acetonitrile, and then mixes it with other components, and removes the solvent acetonitrile by vacuuming during the casting process. Most of the acetonitrile has evaporated, but the propellant is still a slurry mixture in which traces of acetonitrile may still remain. The remaining acetonitrile will adversely affect the combustion performance, energy performance and mechanical performance, and may also bring potential harm to the storage aging performance in the future. At present, there is no report on the determination method of residual acetonitrile in propellant slurr...

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