CN-121977931-A - Method for testing antibody product cracking performance of solid propellant

Abstract

The invention relates to the technical field of energetic material testing, in particular to a method for testing the volumetric cracking performance of a high-energy solid propellant antibody, which comprises the following steps of preparing a test piece for testing the volumetric cracking performance of the high-energy solid propellant antibody; and step three, starting a pressurizing air pump of the air storage tank, recording the pressure of the sealing space, and completing the test when the maximum pressure value appears, thereby obtaining the anti-volumetric cracking performance. The testing method can quantitatively characterize the high-energy solid propellant antibody volumetric cracking performance, provides specific evaluation data for the solid propellant antibody volumetric cracking performance, quantitatively characterizes the high-energy solid propellant antibody volumetric cracking performance through specific pressure values, and can test the quality of the solid propellant antibody volumetric cracking performance of different formulas.

Inventors

• WANG BANGQING
• SHI JUNTAO
• ZHAO CHENGYUAN
• CHI XUHUI
• ZHANG FENGTAO
• YANG GEN
• CAO RONG
• PEI BAOLIN
• LI XIAONA

Assignees

• 湖北航天化学技术研究所

Dates

Publication Date

20260505

Application Date

20240123

Claims (9)

1. 1. A method for testing the volumetric cracking performance of a high-energy solid propellant, comprising the steps of: preparing a high-energy solid propellant antibody cracking performance test piece; step two, the test piece is connected with an air storage tank in a sealing way to form a sealing space; And step three, starting a pressurizing air pump of the air storage tank, recording the pressure of the sealed space, and completing the test when the maximum pressure value appears, so as to obtain the antibody cracking performance.
2. 2. The method for testing the volumetric cracking performance of the high-energy solid propellant antibody according to claim 1, wherein the test specimen is a hollow hole specimen with one side communicated with the outside.
3. 3. The method for testing the volumetric cracking performance of a high-energy solid propellant antibody according to claim 2, wherein the test piece comprises a solid propellant, a lining, a heat insulating layer and a base plate which are tightly connected in sequence.
4. 4. A method of testing the volumetric cracking performance of a high energy solid propellant antibody according to claim 3, wherein the hollow holes extend through the floor, liner and insulation layer in communication with the solid propellant.
5. 5. The method for testing the volumetric cracking performance of a high-energy solid propellant according to claim 2, wherein the hollow cavity is hemispherical.
6. 6. The method for testing the volumetric cracking performance of a high-energy solid propellant according to claim 2, wherein the hollow cavity is ellipsoidal, octahedral or cylindrical.
7. 7. The method for testing the volumetric cracking performance of the high-energy solid propellant antibody according to claim 3, wherein one side of the bottom plate of the test piece is connected with the air storage tank in a sealing manner.
8. 8. The method for testing the volumetric cracking performance of a high-energy solid propellant antibody according to claim 1, wherein the air storage tank is connected with a pressure sensor for measuring the pressure of the sealed space.
9. 9. The method for testing antibody cracking performance of a high-energy solid propellant according to claim 1, wherein the maximum pressure is a pressure value before a pressure dip in the sealed space.

Description

Method for testing antibody product cracking performance of solid propellant Technical Field The invention relates to the technical field of energetic material testing, in particular to a method for testing the antibody product cracking performance of a high-energy solid propellant. Background Because the high-energy solid propellant contains a large amount of nitrate and a high-energy oxidant, the nitrate is easy to decompose to generate gas, slow decomposition reaction can occur to generate gas even in a storage environment with lower temperature, when the gas generation rate in the high-energy solid propellant is higher than the gas diffusion rate, the generated gas can form internal pressure in the propellant, and when the internal pressure exceeds the maximum tensile strength which can be born by the propellant, physical damage, namely volume cracking effect, of the high-energy solid propellant can be caused. The prior art lacks a method for quantitatively characterizing the volumetric cracking performance of the high-energy solid propellant antibody, and lacks a specific quantitative measurement method for the volumetric cracking performance of the high-energy solid propellant antibody. Disclosure of Invention In view of the above problems, it is an object of the present invention to provide a method for testing the antibody cracking performance of a high-energy solid propellant. The testing method can quantitatively characterize the high-energy solid propellant antibody volumetric cracking performance, provides specific evaluation data for the solid propellant antibody volumetric cracking performance, quantitatively characterizes the high-energy solid propellant antibody volumetric cracking performance through specific pressure values, and can test the quality of the solid propellant antibody volumetric cracking performance of different formulas. The technical scheme adopted by the invention is that the method for testing the antibody product cracking performance of the high-energy solid propellant comprises the following steps: preparing a high-energy solid propellant antibody cracking performance test piece; step two, the test piece is connected with an air storage tank in a sealing way to form a sealing space; And step three, starting a pressurizing air pump of the air storage tank, recording the pressure of the sealed space, and completing the test when the maximum pressure value appears, so as to obtain the antibody cracking performance. Preferably, the test piece is a hollow hole test piece with one side communicated with the outside. Preferably, the test piece comprises a solid propellant, a lining layer, a heat insulation layer and a bottom plate which are tightly connected in sequence. Preferably, the hollow holes penetrate the bottom plate, the lining layer and the heat insulation layer and are communicated with the solid propellant. Preferably, the hollow hole is hemispherical. Preferably, the hollow holes are ellipsoidal, octahedral or cylindrical. Preferably, one side of the bottom plate of the test piece is in sealing connection with the air storage tank. Preferably, the air storage tank is connected with a pressure sensor and is used for measuring the pressure of the sealed space. Preferably, the maximum pressure value is a pressure value before the pressure dip of the sealed space. The beneficial effects of the technical scheme are that: (1) The invention provides a method for testing antibody cracking performance of a high-energy solid propellant. The method can quantitatively characterize the high-energy solid propellant antibody cracking performance, and provides specific evaluation data for the solid propellant antibody cracking performance. (2) The volumetric cracking performance of the high-energy solid propellant antibody can be quantitatively characterized by specific pressure values, so that the volumetric cracking performance of the solid propellant antibody with different formulas can be tested. (3) The method provided by the invention can also be used for testing the anti-volumetric cracking performance of other material systems containing gas generating fillers. Drawings FIG. 1 is a schematic front view of the principle of the high energy solid propellant antibody cracking performance provided by one embodiment of the present invention; FIG. 2 is a schematic top view of the high energy solid propellant antibody volume crack performance provided by one embodiment of the present invention; Wherein, the device comprises a solid propellant 1-, a lining 2-, a heat insulation layer 3-, a base plate 4-, a pressurizing air pump 5-, a pressure sensor 6-and a gas storage tank 7-. Detailed Description The following detailed description of embodiments of the application provides further details of the embodiments described, and it should be apparent that the embodiments described are merely some, rather than all, examples of the application. It should be noted that, without conflict,