High-efficiency nontoxic gas generating agent

A gas generating agent and high-efficiency technology, which is applied in the generation of compressed gas and attacking equipment, etc., can solve the problems of reducing combustion temperature and increasing the quantity, and achieve the effects of improving reactivity, easy slag formation, and low cost

Inactive Publication Date: 2015-08-26
QINGDAO LANNONGGU AGRI PROD RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Basic copper nitrate (BCN), a known oxidant, reduces the combustion temperature and suppresses the production of NO due to the low heat generated by combustion, and thus has a purifying effect on the released gas, and can also improve ignition and However, if the content of basic copper nitrate is too high, the amount of NOx and ammonia generated will increase on the contrary.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high-efficiency non-toxic gas generating agent, characterized in that each component of the raw material is composed as follows in parts by weight:

[0023] 8 parts of basic copper nitrate, 3 parts of potassium perchlorate, 4 parts of guanidine nitrate, 1 part of sodium carboxymethyl cellulose gel, 0.5 part of metal hydroxide, 2 parts of catalyst, and 0.8 part of process aid.

[0024] The metal hydroxide is magnesium hydroxide.

[0025] The process aid is a 2:1 mixture of clay and paraffin with a particle size of 5-15 pm.

[0026] The catalyst is a mixture composed of copper oxide and ferric oxide in a molar ratio of 1:2.

[0027] The method for preparing basic copper nitrate includes the following steps:

[0028] (1) Weigh copper nitrate with a concentration of 3 mol / L and urea with a concentration of 2 mol / L according to a weight ratio of 2:1, place them in two beakers, add a certain amount of deionized water, and configure them to have a certain concentration Stir the soluti...

Embodiment 2

[0034] A high-efficiency non-toxic gas generating agent, characterized in that each component of the raw material is composed as follows in parts by weight:

[0035] 10 parts of basic copper nitrate, 4 parts of potassium perchlorate, 5 parts of guanidine nitrate, 1.5 parts of sodium carboxymethyl cellulose gel, 0.6 parts of metal hydroxide, 2.5 parts of catalysts, 1 part of process aids.

[0036] The metal hydroxide is magnesium hydroxide.

[0037] The process aid is a 2:1 mixture of clay and paraffin with a particle size of 5-15 pm.

[0038] The catalyst is a mixture composed of copper oxide and ferric oxide in a molar ratio of 1:2.

[0039] The method for preparing basic copper nitrate includes the following steps:

[0040] (1) Weigh copper nitrate with a concentration of 3 mol / L and urea with a concentration of 2 mol / L according to a weight ratio of 2:1, place them in two beakers, add a certain amount of deionized water, and configure them to have a certain concentration Stir the sol...

Embodiment 3

[0046] A high-efficiency non-toxic gas generating agent, characterized in that each component of the raw material is composed as follows in parts by weight:

[0047] 12 parts of basic copper nitrate, 5 parts of potassium perchlorate, 6 parts of guanidine nitrate, 2 parts of sodium carboxymethyl cellulose gel, 0.8 parts of metal hydroxide, 3 parts of catalysts, 1.2 parts of process aids.

[0048] The metal hydroxide is magnesium hydroxide.

[0049] The process aid is a 2:1 mixture of clay and paraffin with a particle size of 5-15 pm.

[0050] The catalyst is a mixture composed of copper oxide and ferric oxide in a molar ratio of 1:2.

[0051] The method for preparing basic copper nitrate includes the following steps:

[0052] (1) Weigh copper nitrate with a concentration of 3 mol / L and urea with a concentration of 2 mol / L according to a weight ratio of 2:1, place them in two beakers, add a certain amount of deionized water, and configure them to have a certain concentration Stir the solu...

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Abstract

The invention discloses a high-efficiency nontoxic gas generating agent. The high-efficiency nontoxic gas generating agent is characterized in that the generating agent comprises the following ingredients, by weight, 8-12 parts of copper nitrate basic, 3-5 parts of potassium perchlorate, 4-6 parts of guanidine nitrate, 1-2 parts of carboxymethylcellulose sodium gel, 0.5-0.8 part of metal hydroxides, 2-3 parts of catalysts and 0.8-1.2 parts of processing adding agents. The gas generating agent provides gases with a necessary amount for filling an inflatable cushion in a short time, the burning rate scope is wide, slagging is easy, the filterability is good, the burning temperature is low, the generated gases are clean, have no solid particles and are nontoxic, namely, the contents of carbon monoxide, nitrogen oxides and chlorination products are low. The preparation technology of copper nitrate basic is simple, conditions are mild and easy to control, the cost is low, the safety and environment requirements are met, the sheet-shaped structure can provide large gaps and a large specific surface area, and the reactivity is raised.

Description

Technical field [0001] The invention belongs to the technical field of gas generating agents, and specifically relates to a high-efficiency non-toxic gas generating agent. Background technique [0002] The gas generators in automobile airbags usually use solid gas generating agents. The original gas generating agent formula is based on the sodium azide formula. However, due to the toxicity of sodium azide, the use of safety and environmental protection requirements, it is incompatible with The reaction of heavy metals to produce heavy metal azide salts, such as copper azide, has high mechanical sensitivity, which can easily cause combustion and explosion accidents in production. The azide gas generating agent in unused airbags is also easy to cause environmental pollution. . [0003] Basic copper nitrate is generally a light blue powder, and is insoluble in water and alcohol, but soluble in dilute acid and ammonia water. The larger the specific surface area of ​​basic copper nitra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06D5/06
Inventor 李妮
Owner QINGDAO LANNONGGU AGRI PROD RES & DEV
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