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Gas generator composition and preparation thereof

A gas-generating composition and polyurethane technology are applied in the direction of nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, etc., can solve problems such as high toxicity, and achieve high combustion speed, high gas production efficiency, and low combustion temperature. Effect

Active Publication Date: 2009-07-01
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of high toxicity of liquid gas-generating compositions in the prior art, and provide a liquid gas-generating composition that is non-toxic, has low gas-generating temperature, fast burning speed, and no residue after burning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation method of the gas-generating composition provided by the present invention comprises uniformly mixing the solute, solvent and co-solvent under the condition of 0-65°C to obtain the gas-generating composition, wherein the solute is ethyl nitrate, nitrated diethanolamine or polyurethane.

[0019] Based on the total weight of the prepared gas-generating composition, the amount of solute is 40-85%, the amount of solvent is 5-40%, and the amount of co-solvent is 5-40%. Preferably, the gas-generating composition further contains a stabilizer and / or passivator, based on the total weight of the gas-generating composition, the total amount of stabilizer and co-solvent used is 0.1-10%.

[0020] The types of solutes, solvents, co-solvents, stabilizers and passivators have been described in detail above, and will not be repeated here.

[0021] The mixing method is well known to those skilled in the art, for example, put the raw materials in a glass container and st...

Embodiment 1

[0026] This example is used to illustrate the gas generating composition and its preparation method provided by the present invention.

[0027] Based on the total weight, add 60% by weight of ethyl nitrate, 35% by weight of propyl nitrate and 5% by weight of ethyl acetate in a three-necked flask, put the three-necked flask into a 60°C constant temperature water bath, stir until well mixed. The mixture was sealed and vacuumed to 0.01 MPa to obtain gas-generating composition A1.

[0028] The prepared gas-generating composition A is packed into a steel generator, and the container pressure test is carried out in a 60L airtight container according to the standard GBT 19949.1-2005 "Road Vehicle Airbag Parts Part 3-Gas Generator Assembly Test". The results are listed in Table 1.

Embodiment 2

[0030] This example is used to illustrate the gas generating composition and its preparation method provided by the present invention.

[0031] Based on the total weight, add 75% by weight of nitrated diethanolamine, 10% by weight of octane, 5% by weight of ethyl acetate, 10% by weight of water and 5% by weight of potassium chloride in a three-necked flask. Put the flask into a 40°C constant temperature water bath and stir until the mixture is uniform. The mixture was sealed and vacuumed to 0.01 MPa to obtain gas generating composition A2.

[0032] According to the same method as in Example 1, the prepared gas-generating composition was subjected to a container pressure test in a 60 L airtight container, and the measured results are listed in Table 1.

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PUM

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Abstract

The invention relates to a gas production composition and a preparation method thereof. The gas production composition provided by the invention contains solute and solvent, wherein the gas production composition also contains cosolvent, and the solute is ethyl nitrate, nitrification diethanolamine or polyurethane. The method for preparing the gas production composition, which is provided by the invention, comprises the steps of well mixing the solute, the solvent and the cosolvent at a temperature between 0 and 65 DEG C and obtaining the gas production composition, wherein the solute is ethyl nitrate, nitrification diethanolamine or polyurethane. The gas production composition provided by the invention has the characteristics of innocuity, high gas production efficiency, fast combustion, no residue after combustion, low combustion temperature and suitability for large-scale application.

Description

technical field [0001] The invention relates to a gas-generating composition and a preparation method thereof. technical background [0002] The gas-generating composition refers to various substances that generate gas after combustion. Commonly used gas generating compositions are compositions in solid form, generally containing azide compounds, and there are also non-azide compound gas generating compositions under research. However, the solid gas-generating composition itself is easily affected by external environmental factors, and different external temperatures will cause different combustion properties. Moreover, due to the limitation of the shape and size of the solid medicament, it cannot be assembled arbitrarily, and the size of the generator is large and cannot be recycled, which brings waste and environmental pollution problems. [0003] In order to overcome the defects of solid gas-generating compositions, people are trying to study liquid gas-generating compo...

Claims

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Application Information

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IPC IPC(8): C06B25/34
Inventor 韩慧芳何建梅李金贵吴寒杰
Owner BYD CO LTD
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