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Ignition agent composition with reliable ignition performances and preparation method thereof

A technology of ignition performance and composition, which is applied in the direction of explosives processing equipment, explosives, offensive equipment, etc., can solve the problems of high content, inability to play a good release effect, and low sensitivity of aluminum powder, so as to improve ignition performance and enhance Ignition performance, uniform ignition effect

Inactive Publication Date: 2018-05-29
HUBEI HANGPENG CHEM POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For example, the patent US6487974B1 mainly contains 26% of 5AT, 64% of strontium nitrate, 7% of aluminum powder, and 1% of boron nitride. Although 7% of aluminum powder is helpful for low-temperature ignition performance, its content is relatively large, and the sensitivity of aluminum powder is low. , there are certain risks in the process of processing, especially in the process of tableting and granulation, and this patent cannot play a good role in releasing the film

Method used

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  • Ignition agent composition with reliable ignition performances and preparation method thereof
  • Ignition agent composition with reliable ignition performances and preparation method thereof
  • Ignition agent composition with reliable ignition performances and preparation method thereof

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preparation example Construction

[0069] The present invention adopts the mode of wet granulation to prepare ignition agent composition, and specific preparation method comprises the following steps:

[0070] (1), the first material is obtained after mixing strontium nitrate, 5-aminotetrazole, potassium nitrate, mica powder, aluminum oxide, graphite and boron nitride; it can be mixed in a mixing device to obtain the first material, mixed The time is ≤20min; the mixing equipment can use a ribbon mixer.

[0071] (2), add water to the first material and carry out wet mixing to obtain the second material, wherein the amount of water added is 3% to 15% of the total mass of the first material; the wet mixing time is 2min to 15min; wet mixing equipment For kneader or mixer.

[0072] (3), passing the second material through a 10-40 mesh screen to obtain the third material;

[0073] (4), the third material is dried until the water content is less than 0.5% of the total mass of the third material, and the fourth mater...

Embodiment 1

[0098] The ignition agent composition comprises the following components in mass percent content:

[0099]

[0100] After these components are weighed, they are compressed into discs with a diameter of 6.4 mm and a thickness of 2.7 to 3.1 mm by wet granulation and a rotary tablet press. The specific preparation method is: mix strontium nitrate, 5-aminotetrazole (5-AT), potassium nitrate, mica powder, aluminum oxide, graphite and boron nitride through a ribbon mixer to obtain the first material; Add 10% (mass percentage content) of distilled water to the first material and carry out wet kneading for 12 minutes to obtain the second material, pass the second material through a 10-mesh screen to obtain the third material; dry the third material to a water content of It is less than 0.5% of the total mass of the third material, and the fourth material is obtained through a 20-mesh screen again; the fourth material is formed by a rotary tablet press to obtain a circular sheet str...

Embodiment 2

[0106] The ignition agent composition comprises the following components in mass percent content:

[0107]

[0108] After these components are weighed, they are compressed into discs with a diameter of 6.4 mm and a thickness of 2.7 to 3.1 mm by wet granulation and a rotary tablet press. The specific preparation method is: mix strontium nitrate, 5-aminotetrazole (5-AT), potassium nitrate, mica powder, aluminum oxide, graphite and boron nitride through a ribbon mixer to obtain the first material; Add 6% (mass percentage content) of distilled water to the first material and carry out wet kneading for 10 minutes to obtain the second material, pass the second material through a 10-mesh screen to obtain the third material; dry the third material to a water content of It is less than 0.5% of the total mass of the third material, and the fourth material is obtained by passing through a 10-mesh sieve again; the fourth material is formed by a rotary tablet press to obtain a circular ...

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Abstract

The invention relates to an ignition agent composition with reliable ignition performances and a preparation method thereof. The ignition agent composition comprises, by mass, 40% to 60% of strontiumnitrate, 25% to 40% of 5-aminotetrazole, 1% to 20% of potassium nitrate, 1% to 20% of mica powder, 0.5% to 10% of aluminum oxide, 0.1% to 10% of graphite and 0.1% to 10% of boron nitride. The ignitionagent composition does not stick to a mold in tabletting. The tablet can well retains the original gloss and shape, the phenomenon of ignition delay or large fluctuation of the ignition agent at thelow temperature of 40 DEG C is improved, the impact scope of the ignition agent working at -40 to 90 DEG C is wide, the fire is uniform while the gas generant is ignited, the consistency is good and the ignition performance is significantly improved.

Description

technical field [0001] The invention relates to an ignition agent composition with reliable ignition performance and a preparation method thereof, in particular to an ignition agent composition with reliable ignition performance and good consistency at a temperature of -40°C, which belongs to the automobile industry. The field of airbag technology. Background technique [0002] As we all know, with the development of highways and the improvement of automobile performance, the speed of automobiles is getting faster and faster, which makes the traffic accidents of vehicles more frequent, so the airbag system, which is an important part of automobile passive safety, is particularly important. A very important part of the airbag system is the gas generator, its function is to generate a sufficient volume of gas at a fast enough rate in a short time to supply the airbag. Automobile airbags are one or more inflatable devices installed in the front and rear of the car or inside th...

Claims

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Application Information

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IPC IPC(8): C06B33/14C06B21/00
CPCC06B21/0041C06B21/0066C06B33/14
Inventor 罗运强任响宁杜涛范智王晨周雄翟连峰任兴仑阮家声夏强
Owner HUBEI HANGPENG CHEM POWER TECH
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