A Consistency Evaluation Method for Composite Solid Propellant Aging Mechanism

Abstract

The invention discloses a method for evaluating the consistency of aging mechanism of a composite solid propellant. The method comprises the steps that composite solid propellant samples are subjectedto a natural environment accelerated test and a warehouse storage test separately in the same climatic environment; after the prescribed aging days and years are reached, the storage modulus, the pure gel content, relative atomic content of elements and corrosion morphology of the samples are tested separately; and the change rule of the storage modulus, the pure gel content, the relative atomiccontent of the elements and the corrosion morphology of the samples under the natural environment accelerated test and warehouse storage test conditions are compared and analyzed. By synergistically characterizing the variation trend of parameters such as the storage modulus, the pure gel content, the corrosion morphology and the relative atomic content of elements of the samples under the naturalenvironment accelerated test and the warehouse storage test, the method for evaluating the consistency of the aging mechanism of the composite solid propellant under the two test conditions is established, and the storage aging performance of the composite solid propellant under the warehouse storage test condition is reflected in a true and rapid manner.

Description

technical field [0001] The invention relates to a method for evaluating the consistency of the aging mechanism of a composite solid propellant. Background technique [0002] Composite solid propellant (including but not limited to three-component composite solid propellant and four-component composite solid propellant) is one of the weakest links affecting the storage life of bullet and arrow products. The storage aging performance puts forward strict requirements, especially before the new formula composite solid propellant is used in the new projectile products, the storage aging performance of this propellant must be quickly and accurately evaluated. [0003] At present, the warehouse storage test method and the laboratory accelerated aging test method are mainly used to evaluate the storage aging performance of composite solid propellants. The time is several years, and it is difficult to meet the requirements of development, testing and rapid evaluation. In addition, ...

AI Technical Summary

Problems solved by technology

When evaluating the consistency of the aging mechanism of composite solid propellants at home and abroad, most of them are carried out for laboratory accelerated aging tests and warehouse storage tests. Fourier transform infrared spectroscopy is usually used to detect the C=C of gel or sol in composite solid propellants. peak change, or directly use the gel content of the composite solid propellant to evaluate the consistency of its aging mechanism. Quantitative determination results have relatively large limitations and are not comprehensive, so they cannot be used to evaluate the consistency of the aging mechanism of composite solid propellants under the conditions of natural environment accelerated test and warehouse storage test

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