Energetic material thermal stability and thermal safety test device and method

A technology of thermal stability and test equipment, applied in the direction of thermal analysis of materials, measuring equipment, and analysis of materials, can solve the problems of cumbersome operation, low degree of automation, bursting, etc., and achieve good test equipment, high degree of automation, and high degree of automation Effect

Inactive Publication Date: 2013-10-16
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. It is necessary to manually take out the test tube and face to face to identify the degree of discoloration of the test paper, and the personal safety of the test personnel cannot be protected
[0006] 2. The end point of the test paper discoloration in the test process needs to be visually identified by the tester. Factors such as the test environment light and individual differences between testers will have a certain impact on the test results.
[0007] 3. The heating of the constant temperature bath is uneven, and there is a hidden danger of the test tube bursting during the heating process
[0008] 4. Low degree of automation and cumbersome operation

Method used

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  • Energetic material thermal stability and thermal safety test device and method
  • Energetic material thermal stability and thermal safety test device and method
  • Energetic material thermal stability and thermal safety test device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Carry out the discoloration test of nitrocellulose methyl violet test paper, and this test is carried out according to the following steps:

[0047] 1) Turn on the thermal stability and thermal safety test device for energetic materials, complete the system self-inspection, set the metal bath temperature to 134.5°C, and start heating;

[0048] 2) Weigh 5 samples of nitrocellulose and prepare methyl violet test paper and test tube;

[0049] 3) First put 5 weighed samples into the test tubes respectively, and then put the methyl violet test paper into the test tubes;

[0050] 4) When the temperature of the constant temperature bath reaches and stabilizes at the set temperature, quickly put the test tube into the test tube hole of the metal bath, set the speed of the servo motor to 0rpm, and turn on the servo motor to make the metal bath rotate;

[0051] 5) When the color sensor collects the chromaticity value of the methyl violet test paper in the test tube and judges by...

Embodiment 2

[0056] Carry out the discoloration test of nitrocellulose methyl violet test paper, the test procedure of this embodiment is carried out according to the same steps as that of Example 1, the difference is that in the step 4) of this embodiment, the rotational speed of the servo motor is set to 10rpm.

[0057] In the present embodiment, the time when nitrocellulose makes the methyl violet test paper change from purple to orange is as shown in Table 2:

[0058] Table 2 Color change time of nitrocellulose 2

[0059]

Embodiment 3

[0061] Carry out the discoloration test of double base gunpowder methyl violet test paper, this test is carried out according to the following steps:

[0062] 1) Turn on the thermal stability and thermal safety test device for energetic materials, complete the system self-inspection, set the temperature of the metal bath to 120°C, and start heating;

[0063] 2) Weigh 5 double-base propellant samples and prepare methyl violet test paper and test tubes;

[0064] 3) First put 5 weighed samples into the test tubes respectively, and then put the methyl violet test paper into the test tubes;

[0065] 4) When the temperature of the constant temperature bath reaches and stabilizes at the set temperature, quickly put the test tube into the test tube hole of the constant temperature bath, set the speed of the servo motor to 0 rpm, and turn on the servo motor to rotate the metal bath;

[0066] 5) When the color sensor collects the chromaticity value of the methyl violet test paper in th...

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Abstract

The invention discloses an energetic material thermal stability and thermal safety test device and an energetic material thermal stability and thermal safety test method. The device comprises a constant-temperature bath used for placing test tubes and used for providing a constant temperature, a color sensor used for acquiring test tube image information, and a computer and a PLC used for controlling the work of the device. When the test is carried out, the device is started; a temperature and a motor rotation speed are set; a sample is placed in a test tube; and test can be started. With the device provided by the invention, a test staff is completely isolated from the device, such that the safety of the test staff is ensured. Also, the test is not influenced by lights and the human factors of the test staff, such that test result is more accurate. The device is completely practical, and has high automation degree. A good test device is provided for the thermal stability and thermal safety of an energetic material.

Description

technical field [0001] The invention relates to a safety methyl violet test device and method, which are mainly used for the chemical stability test of gunpowder (single-base medicine, double-base medicine, triple-base medicine and other nitrate gunpowder) and energetic materials such as nitrocellulose. Background technique [0002] The methyl violet test is one of the classic evaluation methods for the thermal stability and thermal safety of gunpowder (single-base, double-base, triple-base and other nitrate gunpowders) and nitrocellulose and other energetic materials. It judges the chemical stability of the test sample by testing the time for the gas released by thermal decomposition of energetic materials to make the methyl violet test paper change from purple to orange or whether the sample is deflagrated after continuous heating for 5 hours. It is fast and simple. It is a commonly used chemical stability testing method for energetic materials in NATO member states, and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00
Inventor 张皋田雁茹曹继平陈竚陈泳何飞蓉邵颖惠任黎李凤武金萍王晓革赵铁柱周岚曹磊马亚南张佩
Owner XIAN MODERN CHEM RES INST
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