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Automatic ignition powder for air bag restraint system and preparation method thereof and gas generator for automobile air bag restraint system

A technology for safety airbags and ignition powders, which is applied to the generation of compressed gas, explosives, and offensive equipment. It can solve the problems of poor thermal stability, high risk factor for automatic ignition powders, and poor long-term storage stability. Good heat storage stability and high temperature long-term storage stability

Inactive Publication Date: 2018-07-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor thermal stability of 5-aminotetrazole agents, and the sensitive raw materials such as nitroguanidine, nitrocellulose, and chlorate, the production process of automatic ignition powder has a high risk factor and poor long-term storage stability.

Method used

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Examples

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preparation example Construction

[0024] The present invention also provides the preparation method of the automatic ignition powder, which comprises mixing fuel, oxidant, auxiliary oxidant and additive to obtain a mixture, and then granulating, drying and pressing the mixture to obtain the automatic ignition powder.

[0025] As mentioned above, the autoignition powder may also contain various binders commonly used in the prior art, therefore, the preparation method also includes the step of adding binders to the mixture. Preferably, in order to facilitate the uniform mixing of the binder and other components in the medicament, the binder is preferably added in the form of a solution, for example, the binder may be dissolved in a solvent first, and then added to the mixture. Preferably, based on 100 parts by weight of the binder solution, the amount of solvent used is 98 parts by weight. The solvent may be various organic solvents common in the prior art, such as at least one selected from acetone, ethanol, an...

preparation example 1

[0030] Add 3 parts by weight of bamboo charcoal material into a solution containing 3 parts by weight of copper phthalocyanine, stir and impregnate for 24 hours, filter, wash, and dry at 100°C for 8 hours to obtain metal phthalocyanine / bamboo charcoal material A1 with a particle size of 75-150 µm. The load of metal phthalocyanine in the metal phthalocyanine / bamboo charcoal material is 40% (weight).

preparation example 2

[0032] Add 4 parts by weight of bamboo charcoal material to a solution containing 1 part by weight of iron phthalocyanine, stir and impregnate for 24 hours, filter, wash, and dry at 100°C for 8 hours to obtain metal phthalocyanine / bamboo charcoal material A2 with a particle size of 75-150 µm. The load of metal phthalocyanine in the metal phthalocyanine / bamboo charcoal material is 20% (weight).

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PUM

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Abstract

The invention provides automatic ignition powder for an air bag restraint system and a preparation method thereof and an air bag containing the automatic ignition powder. The automatic ignition powdercontains a fuel, an oxidant, an auxiliary oxidant and an additive, wherein the additive is bamboo carbon-loaded metal phthalocyanine. The automatic ignition powder provided by the invention has relatively good long heat accumulation stability and is suitable for a long service of an automobile.

Description

technical field [0001] The invention belongs to the technical field of automobile safety airbags, and in particular relates to an automatic ignition agent for safety airbags, a preparation method thereof and a gas generator for automobile safety airbags. Background technique [0002] In general, the working principle of the automobile airbag is: by triggering the pyrotechnic gas-producing filler, the gas generator generates a certain amount of gas in a very short period of time, thereby inflating the airbag. However, in the case of a sharp rise in temperature caused by external high temperature, the pyrotechnic material of the gas generator will burn abnormally, the strength of the shell will decrease, violent reaction or even explosion may occur, and shell fragments will be ejected, increasing the danger. In order to avoid this situation and ensure its safety, a new material with an automatic ignition function has been added, which can be activated without the assistance of...

Claims

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Application Information

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IPC IPC(8): C06D5/06C06B31/00
CPCC06B31/00C06D5/06
Inventor 简丽娟唐应娥王鹏
Owner BYD CO LTD
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