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Novel gas generating agent for MGG

A gas generating agent, a new type of technology, applied in the generation of compressed gas, offensive equipment, explosives, etc., can solve the problems of chemical residues that cannot be filtered, explosion temperature, and easy deflagration, etc., to achieve improved safety factor, high safety factor, flame good sensitivity

Inactive Publication Date: 2020-08-18
上海集瀛汽车安全技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that traditional chemical residues cannot be filtered, and safety hazards such as deflagration and explosion temperature are prone to occur. The purpose is to provide a new type of gas generating agent for MGG, which has stable combustion, no residue, improved safety factor, and flame sensitivity. Good, fast burning speed, high heat of combustion, low toxicity, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A novel gas generating agent for MGG of the present invention comprises the following steps: 1) mixing powdered ammonium nitrate and shellac solvent in a ratio of 7:3, then wet mixing for 15 minutes, then drying for 30-40 minutes, and then sieving and granulating After forming 20-40 mesh granules, dry for 40-60 minutes to obtain the first agent; 2) firstly dry and sieve potassium nitrate, and then weigh potassium nitrate, boron powder and Phenolic resin, wet mixing time 15min, dry mixing time 15min and granulation into 20 mesh to 40 mesh, drying for 1 hour to obtain the second agent; 3) Mix the first agent and the second agent at a ratio of 8:2 to obtain a gas generator.

[0020] 1. Concentration test of harmful gas products

[0021] Take 1.2g of the gas generating agent prepared in Example 1, assemble it in the MGG, and test the amount of gas generated after the agent explodes.

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Abstract

The invention discloses a novel MGG gas generating agent, which comprises a first agent and a second agent, wherein the first agent comprises 60-70 parts of ammonium nitrate and 30-40 parts of shellacsolvent, and the second agent comprises the following components in parts by mass: 67-70 parts of potassium nitrate, 13-20 parts of boron powder and 0.7-10 parts of phenolic resin; wherein the mass ratio of the first medicament to the second medicament is 8:2, and the particle size of the first medicament and the second medicament is 20-40 meshes. The gas generating agent is stable in combustionand free of residues, the safety coefficient is improved, and the gas generating agent has the advantages of being good in flame sensitivity, high in combustion speed, high in combustion heat, low intoxicity and the like.

Description

technical field [0001] The invention relates to the field of gas generating agents, in particular to a novel gas generating agent for MGG. Background technique [0002] MGG is a kind of pyrotechnic device that quickly generates high-temperature and high-pressure gas after activation to realize seat belt pre-tightening, hood pop-up, and electric vehicle fuse disconnection. Its core is the agent filled inside. Traditional MGG agents include guanidine nitrate, ammonium nitrate plus 95% NC (nitrocellulose), etc. Among them, guanidine nitrate gas-generating medicine cannot filter the residue after the action due to the space limitation of the MGG shell, while ammonium nitrate plus nitrocellulose is used as When MGG is used as a gas generating agent, since nitrocellulose is easy to absorb moisture, it is prone to deflagration and explosion temperature at high temperature, and the pressure peak time is relatively slow at 10ms to 13ms. Contents of the invention [0003] The techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/32C06B33/04C06D5/06
CPCC06B31/32C06B33/04C06D5/06
Inventor 魏煜易聪鹏姚宇坤范诚诚陈智王振王根武杨莉魏亚宁魏德贤魏博
Owner 上海集瀛汽车安全技术有限公司
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