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Method for evaluating consistency of aging mechanism of composite solid propellant

A technology of solid propellant and evaluation method, which is applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as large limitations, inability to evaluate the consistency of the aging mechanism of composite solid propellants, and difficulty in obtaining quantitative measurement results. , to achieve high accuracy

Active Publication Date: 2019-02-01
NO 59 RES INST OF CHINA ORDNANCE IND
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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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  • Method for evaluating consistency of aging mechanism of composite solid propellant
  • Method for evaluating consistency of aging mechanism of composite solid propellant
  • Method for evaluating consistency of aging mechanism of composite solid propellant

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Embodiment

[0023] A method for evaluating the consistency of aging mechanism of a composite solid propellant (taking three-component butylated hydroxy propellant as an example), the method is carried out in the following steps:

[0024] Step 1: Carry out the natural environment acceleration test and warehouse storage test of the composite solid propellant samples under the tropical marine atmospheric environment;

[0025] Step 2: Take out a small amount of composite solids when aging in the natural environment accelerated test for 0 days, 34 days, 76 days, 114 days, and 171 days, and when aging in the warehouse storage test for 0 days, 0.5 days, 1 day, 2 days, and 3 years For the propellant test samples, the storage modulus of the sample was detected by a dynamic mechanical analyzer, the pure gel content of the sample was detected by the pure gel content test method, the relative atomic content of the elements was detected by the X-ray photoelectron spectrometer, and the The corrosion mo...

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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 propellants (including but not limited to three-component composite solid propellants and four-component composite solid propellants) are one of the weakest links affecting the storage life of missile products. The storage aging performance puts forward strict requirements, especially before using the new formula composite solid propellant on the new ammunition and arrow products, the storage aging performance of this propellant must be assessed quickly and accurately. [0003] At present, warehouse storage test methods and laboratory accelerated aging test methods are mainly used to evaluate the storage aging performance of composite solid propellants. The time is as long as several years, and it is difficult to meet the requirements of development, testing and rapid evaluation. In add...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 魏小琴张伦武胥泽奇李迪凡赵方超罗丹
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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