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Low burning temperature pyrotechnic gas generating agent composition

A technology of gas generating agent and composition, which is applied in the production of compressed gas, attacking equipment, etc., can solve the problems of reducing the burning temperature of the outlet gas, disadvantage, etc., and achieve the effect of increasing the burning rate, reducing the generation of dust and excellent thermal stability.

Inactive Publication Date: 2015-08-12
中国兵器工业第二一三研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the burning rate, potassium perchlorate is added, but at the same time it also increases the burning temperature of the gas generating agent, which is obviously not good for reducing the burning temperature of the outlet gas

Method used

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  • Low burning temperature pyrotechnic gas generating agent composition
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  • Low burning temperature pyrotechnic gas generating agent composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～13、 comparative example 1

[0031] A gas generant composition having the composition shown in Table 1 was formulated. According to the theoretical calculation of these compositions, the theoretical heat of detonation (H O is liquid), specific volume (the unit ml / g represents the gas content produced per 1g of the composition, excluding water), the results are shown in Table 1.

[0032] Table 1

[0033]

[0034]

[0035] In Table 1, GN is guanidine nitrate, BCN is basic copper nitrate, DHG is dihydroxyglyoxime, and GZT is diguanidine azotetrazole. The other tables are also shown in the same manner. The average particle diameter of aluminum hydroxide in Table 1 is 2.16 μm (the same applies to other tables), the average particle diameter of sodium bicarbonate is 5.12 μm (the same applies to other tables), and the average particle diameter of dihydroxyglyoxime is 4.16 μm. μm (the same applies to other tables), and the average particle diameter of azotetrazole biguanide is 12.51 μm (the same applies t...

Embodiment 14～18

[0038] Gas generant compositions having the compositions shown in Table 2 were produced. These compositions test the detonation heat value of the gas generating agent according to GJB5891.29-2006, and test the gas specific volume value of the gas generating agent according to GJB5891.30-2006. test the result.

[0039] Table 2

[0040]

[0041]

[0042] Note: Fluorine rubber is added

[0043] In Examples 14-18, the measured detonation heat value is lower than that of Comparative Example 2, which is consistent with the theoretically calculated value. All four cooling agents can reduce the detonation heat of the gas generating agent, and the addition of DHG can increase the specific volume of the gas generating agent.

Embodiment 19～27

[0045] Pyrotechnic gas generant compositions having the compositions shown in Table 3 were produced. These compositions are molded into a cylinder with a diameter of Φ8mm, and the cylinder is put into a plexiglass tube of the same size. The wall thickness of the plexiglass tube is 3mm. Insert two 0.25mm thin K-type thermocouples into the two holes to the center of the powder column. The thermocouple near the ignition end is No. 1 thermocouple, and the thermocouple far away is No. 2 thermocouple. Open the system under normal pressure. , to measure the burning temperature and burning rate of the gas generating agent. The burning temperature is the higher one of the highest temperatures measured by the two thermocouples, the time difference between the highest temperatures of the two thermocouples is t, and the burning rate is determined as rb=h / t, each group of samples is measured three times, and the average is taken Value, a test result of comparative example 2 such as figur...

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PUM

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Abstract

The invention provides a low burning temperature pyrotechnic gas generating agent composition. The composition comprises, by mass, 10-55 parts of guanidine nitrate as a burnable agent, 35-70 parts of basic copper nitrate as an oxidant, 3-10 parts of copper iron oxide as a catalyst and a secondary oxidant, 5-20 parts of a cooling agent and 0.1-3 parts of fluorubber as a binder; and the cooling agent is at least one of carbonate, bicarbonate, aluminum hydroxide, dihydroxyglyoxime, diaminoglyoxime and guanidinium azotetrazolate. The composition has the advantages of low burning temperature, high burning speed, high gas generating rate, low concentration of harmful gas, and stable combustion at a low pressure.

Description

technical field [0001] The present invention relates to a low combustion temperature pyrotechnic gas generant composition, which is suitable for gas generators and other auxiliary power devices. Background technique [0002] Gas generating agents are used in auxiliary control power devices in aviation, aerospace and other fields, and are also used for rapid inflation of equipment such as automotive airbags, various lifeboats, and civil aviation emergency safety slides. , the performance requirements of the gas generating agent have changed greatly, not only the gas generating agent is required to produce a large amount of gas, the gas is clean, but also the burning temperature is low and the burning speed range is wide. [0003] Guanidine high-nitrogen compounds have high nitrogen content and high gas production, and are becoming the research and application direction of non-azide gas generating agents. [0004] The formula provided by Chinese patent ZL200410098751.8 select...

Claims

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Application Information

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IPC IPC(8): C06D5/06
Inventor 卫春强盛涤伦杨斌陈利魁朱雅红徐栋庞从从
Owner 中国兵器工业第二一三研究所
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