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Perforated gas producing agent molding pressing product and preparation process thereof

A technology of molded products and preparation technology, which is applied in the direction of offensive equipment, compressed gas generation, explosives, etc., and can solve the hidden dangers of generator safety and other problems

Pending Publication Date: 2019-05-28
HUBEI HANGPENG CHEM POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the agent contains ammonium nitrate formula, and the extrusion molding process is adopted. Due to the strong hygroscopicity of the ammonium nitrate formula, there is a hidden danger to the safety of the generator.

Method used

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  • Perforated gas producing agent molding pressing product and preparation process thereof
  • Perforated gas producing agent molding pressing product and preparation process thereof
  • Perforated gas producing agent molding pressing product and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] (1) According to the wet granulation method in the above method one, the raw material components comprising at least fuel and oxidant are made into granules to obtain the first material; the fuel in the first material is guanidine nitrate, and its content is 50%, The oxidizing agent is basic copper nitrate, whose content is 31.75%, the auxiliary oxidizing agent is ammonium perchlorate, whose content is 2% respectively; , the first material also includes a functional auxiliary agent and a mold release agent which are talcum powder and graphite, and the contents thereof are 0.75% and 0.25% respectively.

[0094] (2) sieving and sizing the first material to obtain a second material with a particle diameter within the range of 10 to 200 meshes, the second material has a water content of 0.20%, and a particle bulk density of 0.903g / cm3;

[0095] (3) The burning rate of the formula is 21.3mm / s, the burning temperature is 2405K, and the gas production is 3.12mol / 100g.

[0096...

Embodiment 2

[0102] (1) According to the above method 2, the raw material components containing at least fuel and oxidant are mixed uniformly to obtain the first material. The mixing equipment can be a V-shaped mixer, a three-dimensional multi-directional motion mixer, an automatic lifting hopper mixer, and a ribbon mixer. machine or acoustic resonance mixer; the fuel in the first material is guanidine nitrate and amidinourea copper nitrate, the content of which is 25% and 30% respectively, the oxidant is basic copper nitrate, and its content is 30%, and the auxiliary oxidant ammonium perchlorate, its content is 3% respectively; the functional auxiliary agent is strontium titanate and aluminum hydroxide, its content is 7.5% and 3.5% respectively; In addition, the first material also includes auxiliary functional auxiliary agent talcum powder and graphite, whose contents are 0.75% and 0.25%, respectively.

[0103] (2) passing the first material through a 10-200 mesh screen to obtain a parti...

Embodiment 3

[0111] (1) According to the boiling granulation method in the above method one, the raw material components comprising at least fuel and oxidant are made into granules to obtain the first material; the fuel in the first material formula is nitroguanidine and melamine cyanurate. The contents are respectively 23.5% and 31.5%, the oxidant is basic copper nitrate and basic copper carbonate, and its content is respectively 24.4% and 11%, the auxiliary oxidant is ammonium perchlorate, and its content is respectively 2.5%; The content of strontium titanate is 6%; the content of auxiliary functional additives boron nitride and graphite is 0.75% and 0.35% respectively.

[0112] (2) sieving and sizing the first material to obtain a second material with a particle diameter within the range of 10 to 200 meshes, the second material has a moisture content of 0.18%, and a particle bulk density of 1.152 g / cm3;

[0113] (3) The burning rate of the formula is 18.9mm / s, the burning temperature i...

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Abstract

The invention relates to a perforated gas producing agent molding pressing product and a preparation process thereof. The appearance of the perforated gas producing agent molding pressing product is acylinder body; a penetrated or non-penetrated hole is formed at the inside; the perforated gas producing agent can achieve the goals of reducing the surface combustion process, or realizing the equalsurface combustion or increased surface combustion in a period time in the combustion process, and thus realizing the low early stage pressure and slope of the gas generator; the impact on an airbagand the harm are small; an airbag is slowly unfolded; the middle stage pressure fast rises; the airbag is fast filled; the later stage pressure is slowly reduced; the airbag maintaining time is prolonged; the curve is similar to the S-shaped pressure-time curve. The initial combustion surface is reduced; the reduced surface combustion or equal surface combustion or increased surface combustion arereduced; the pressure inside the gas generator is reduced, so that the material cost of the gas generator and the quality of the generator can be reduced. The pressing shaping process is used; the perforated gas producing agent is prepared in a pressing forming way, so that the preparation process is simple and efficient; the operation and the control are easy.

Description

technical field [0001] The invention belongs to the technical field of gas generating agents, and relates to a molded product of a gas generating agent with holes and a preparation process thereof, in particular to a molded product of a gas generating agent with holes prepared by a compression molding process. Background technique [0002] An automotive airbag system consists of a gas generator that generates gas, an airbag for protection, and an exterior that supports the above two parts. The gas generator contains a gas generating agent, which is activated when needed. The gas generating agent burns to generate a large amount of gas, and the gas bag is filled to protect personal safety. [0003] At present, the mainstream gas generating agents in the world are guanidine nitrate and basic copper nitrate gas generating agents, with guanidine nitrate as the main fuel and basic copper nitrate as the main oxidant. The tablet shape of this kind of gas generating agent is usuall...

Claims

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Application Information

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IPC IPC(8): C06B31/00C06B31/12C06D5/06
CPCC06B31/00C06B31/12C06D5/06
Inventor 罗运强王秋雨任响宁王晨杜涛张俊杨志雄付文斌张印明刘柳陈爱萍
Owner HUBEI HANGPENG CHEM POWER TECH
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