Gas generating agent composition, gas generating agent, preparation method and application

A technology of gas generating agent and composition, which is applied in the directions of inorganic oxyhalide salt explosive composition, attack equipment, vehicle safety arrangement, etc., and can solve problems such as inability to meet limit requirements.

Pending Publication Date: 2022-02-15
HUBEI HANGPENG CHEM POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many gas generants of GN / BCN formula systems can meet the gas production requirements, they cannot meet the limit requirements of USCAR and AK-LV for the content of toxic and harmful gases and the content of suspended solids in the air

Method used

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  • Gas generating agent composition, gas generating agent, preparation method and application
  • Gas generating agent composition, gas generating agent, preparation method and application
  • Gas generating agent composition, gas generating agent, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0052] As an embodiment, the specific preparation method of the gas generating agent includes the following steps:

[0053] (1) Mix guanidine nitrate, basic copper nitrate, ammonium perchlorate and zirconate in a mixing equipment. The mixing equipment can be a pneumatic mixer, a V-type mixer, a three-dimensional multi-directional motion mixer, an automatic lifting Hopper mixer, vibrating mill, ribbon mixer or acoustic resonance mixer, mixing time ≥ 5min to obtain the first material.

[0054] (2), add distilled water to the first material and carry out wet mixing, the equipment for wet mixing is a kneader or a mixer, for example, a horizontal kneader, a vertical kneader, a ribbon mixer or an acoustic resonance mixer can be selected, The amount of water added is 5% to 15% of the total mass of the first material, and the wet mixing time is 20 minutes to 60 minutes to obtain the second material.

[0055] (3) passing the second material through a 10-40 mesh screen to obtain a thir...

Embodiment 1

[0070] This embodiment provides a gas generating agent, which is a disc with a diameter of 5 mm and a thickness of 1.9 mm, and is composed of a gas generating agent composition and a lubricant. The gas generating agent composition is composed of 54% guanidine nitrate, basic nitric acid Composed of 38% copper, 2% ammonium perchlorate and 6% barium zirconate, the oxygen balance of the gas generating agent composition is -0.96%; the lubricant is calcium stearate, and the consumption is 1% of the total amount of the gas generating agent composition %.

[0071] The preparation process of the gas generating agent is:

[0072] Mix guanidine nitrate, basic copper nitrate, ammonium perchlorate and barium zirconate through mixing equipment to obtain the first material; add 15% distilled water to the first material and carry out wet kneading for 60 minutes to obtain the second material; The material passes through a 40-mesh screen to obtain a third material; the third material is dried un...

Embodiment 2

[0096] This embodiment provides a gas generating agent, which is basically the same as the preparation method in Example 1, except that the mass percentage of the gas generating agent composition in this embodiment consists of: guanidine nitrate 52%; basic copper nitrate 42%; ammonium perchlorate 2%; barium zirconate 4%, the oxygen balance of the gas generant composition formulation is -0.353%.

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Abstract

The embodiment of the invention provides a gas generating agent composition, a gas generating agent, a preparation method and application, and relates to the technical field of automobile safety air bags. The gas generating agent composition comprises guanidine nitrate serving as a fuel, basic copper nitrate serving as a main oxidizing agent, an auxiliary oxidizing agent and a slag forming agent; wherein the auxiliary oxidant is ammonium perchlorate. The slag forming agent is at least one zirconate, and the content of each component is as follows in percentage by mass: 40-60% of guanidine nitrate, 25%-50% of basic copper nitrate, 0.5%-7% of ammonium perchlorate, and 1%-10% of a slag forming agent; and the oxygen balance of the gas generating agent composition is 0 to -3%. According to the gas generating agent composition, the gas generating agent, the preparation method and the application, the content of toxic and harmful gas generated during combustion of the gas generating agent and the content of suspended solids in the air meet the limit requirements of USCAR on the content of the toxic and harmful gas and the content of the suspended solids in the air by adjusting the formula components and the proportion of the gas generating agent.

Description

technical field [0001] The present application relates to the technical field of automobile airbags, in particular, to a gas generating agent composition, a gas generating agent, a preparation method and an application. Background technique [0002] With the rapid development of the automobile industry, the number of motor vehicles is increasing day by day, and the frequency of traffic accidents is becoming more and more frequent. As a protective device on automobiles, people pay more and more attention to airbags. The core component of the automobile airbag is the gas generator, and the core component of the gas generator is the gas generating agent, that is, the gas-producing medicine. The working principle of the airbag is that when the gas generator receives a pulsed electrical signal, the electric ignition tube inside the ignition system is excited to detonate, and the heat generated by the combustion of the primer inside the electric ignition tube will ignite the ignit...

Claims

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Application Information

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IPC IPC(8): C06B29/16C06B31/00B60R21/264B60R21/26
CPCC06B29/16C06B31/00B60R21/26B60R21/2644
Inventor 罗运强王亚杜利杜涛任响宁张俊沈晓琛
Owner HUBEI HANGPENG CHEM POWER TECH
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