Gas generating agent composition and preparation method thereof

Abstract

The invention relates to a gas generating agent composition. The gas generating agent composition comprises fuel, an oxidizing agent, a rare earth metal organic salt and an azotetrazolate nonmetal salt which are used as raw material components. By adding the rare earth metal organic salt and the azotetrazolate nonmetal salt to the fuel and the oxidizing agent, the decomposition temperature of the fuel is ahead of time, the fuel decomposition is promoted, and the combustion rate and the gas production rate are increased; and lots of gases are generated after reaction of the azotetrazolate nonmetal salt with oxides, thus enhancing the ignitability, increasing the combustion rate and reducing the combustion temperature. The gas generating agent composition is capable of effectively improving the ignitability and reducing the combustion temperature, meanwhile does not generate residues and is high in gas generation efficiency, large in gas production rate and fast in combustion rate.

Description

technical field

[0001] The invention relates to a gas generating agent composition and a preparation method thereof, belonging to the technical field of gas generating agents. Background technique

[0002] With the enhancement of people's road safety awareness, automobile airbag system has become one of the standard configurations of automobiles. The automotive airbag system belongs to the field of passive safety. When the car is collided during operation, the gas generating agent in the airbag gas generator will be triggered to generate a large amount of gas, making the airbag deploy and forming a gap between the car and the passengers. Safety barriers to protect passengers from or reduce injuries caused by inertia. Therefore, the gas generating agent in the gas generator needs to have the following properties: (1) good ignitability, rapid gas generation, and complete combustion to reach the maximum pressure within tens of milliseconds; (2) safe gas composition, which can ...

Examples

Embodiment 1

[0039] The gas generating agent composition described in this embodiment adopts the following raw material components:

[0040] Fuel guanidine nitrate, 44g;

[0041] Oxidant basic copper nitrate, 47g;

[0042] Cerium oxalate, 3g;

[0043] Azotetrazolium biguanide, 2g;

[0044] Silicon dioxide, 1g;

[0045] Binder polyethylene glycol, 2g.

[0046] The preparation method of described gas generant composition, it comprises the steps:

[0047] Take the guanidine nitrate, basic copper nitrate, cerium oxalate, biguanidine azotetrazolium and silicon dioxide respectively according to the above weight, mix them uniformly, add the binder polyethylene glycol, granulate, dry at 60°C, press Slice and serve.

Embodiment 2

[0049] The gas generating agent composition described in this embodiment adopts the following raw material components:

[0050] Fuel guanidine nitrate, 40g;

[0051] Oxidant basic copper nitrate, 50g;

[0052] Cerium oxalate, 1g;

[0053] Ammonium azotetrazolium, 7g;

[0054] Binder sodium carboxymethylcellulose, 2 g.

[0055] The preparation method of described gas generant composition, it comprises the steps:

[0056] According to the above weight, take the guanidine nitrate, basic copper nitrate, cerium oxalate and ammonium azotetrazolium respectively, mix them evenly, add the binder sodium carboxymethyl cellulose, granulate, dry at 60°C, and press into tablets to obtain .

Embodiment 3

[0058] The gas generating agent composition described in this embodiment adopts the following raw material components:

[0059] Fuel guanidine nitrate, 42g;

[0060] Basic copper nitrate, 46g;

[0061] Cerium oxalate, 2g;

[0062] Azotetrazolium biguanidine, 5g;

[0063] The slagging agent is a mixture of alumina and kaolin, wherein 3g of alumina and 1g of kaolin;

[0064] Binder sodium carboxymethylcellulose, 1 g.

[0065] The preparation method of described gas generant composition, it comprises the steps:

[0066] Take the guanidine nitrate, basic copper nitrate, cerium oxalate, biguanidine azotetrazolium, alumina and kaolin according to the above weight respectively, mix them uniformly, add the binder sodium carboxymethyl cellulose, granulate and heat at 60°C Drying and pressing into tablets.

technical field

[0001] The invention relates to a gas generating agent composition and a preparation method thereof, belonging to the technical field of gas generating agents. Background technique

[0002] With the enhancement of people's road safety awareness, automobile airbag system has become one of the standard configurations of automobiles. The automotive airbag system belongs to the field of passive safety. When the car is collided during operation, the gas generating agent in the airbag gas generator will be triggered to generate a large amount of gas, making the airbag deploy and forming a gap between the car and the passengers. Safety barriers to protect passengers from or reduce injuries caused by inertia. Therefore, the gas generating agent in the gas generator needs to have the following properties: (1) good ignitability, rapid gas generation, and complete combustion to reach the maximum pressure within tens of milliseconds; (2) safe gas composition, which can ...

Examples

Embodiment 1

[0039] The gas generating agent composition described in this embodiment adopts the following raw material components:

[0040] Fuel guanidine nitrate, 44g;

[0041] Oxidant basic copper nitrate, 47g;

[0042] Cerium oxalate, 3g;

[0043] Azotetrazolium biguanide, 2g;

[0044] Silicon dioxide, 1g;

[0045] Binder polyethylene glycol, 2g.

[0046] The preparation method of described gas generant composition, it comprises the steps:

[0047] Take the guanidine nitrate, basic copper nitrate, cerium oxalate, biguanidine azotetrazolium and silicon dioxide respectively according to the above weight, mix them uniformly, add the binder polyethylene glycol, granulate, dry at 60°C, press Slice and serve.

Embodiment 2

[0049] The gas generating agent composition described in this embodiment adopts the following raw material components:

[0050] Fuel guanidine nitrate, 40g;

[0051] Oxidant basic copper nitrate, 50g;

[0052] Cerium oxalate, 1g;

[0053] Ammonium azotetrazolium, 7g;

[0054] Binder sodium carboxymethylcellulose, 2 g.

[0055] The preparation method of described gas generant composition, it comprises the steps:

[0056] According to the above weight, take the guanidine nitrate, basic copper nitrate, cerium oxalate and ammonium azotetrazolium respectively, mix them evenly, add the binder sodium carboxymethyl cellulose, granulate, dry at 60°C, and press into tablets to obtain .

Embodiment 3

[0058] The gas generating agent composition described in this embodiment adopts the following raw material components:

[0059] Fuel guanidine nitrate, 42g;

[0060] Basic copper nitrate, 46g;

[0061] Cerium oxalate, 2g;

[0062] Azotetrazolium biguanidine, 5g;

[0063] The slagging agent is a mixture of alumina and kaolin, wherein 3g of alumina and 1g of kaolin;

[0064] Binder sodium carboxymethylcellulose, 1 g.

[0065] The preparation method of described gas generant composition, it comprises the steps:

[0066] Take the guanidine nitrate, basic copper nitrate, cerium oxalate, biguanidine azotetrazolium, alumina and kaolin according to the above weight respectively, mix them uniformly, add the binder sodium carboxymethyl cellulose, granulate and heat at 60°C Drying and pressing into tablets.

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