Gas generating agent composition capable of lowering combustion temperature and keeping shape, preparation method, application and gas generator
The technology of a gas generating agent and composition, which is applied in the field of gas generators and automobile airbag gas generators, can solve the problems of short ignition delay period, high energy consumption, and can not be well maintained, and achieves increased packing density and thermal stability. Good performance, the effect of reducing the surface area
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[0064] The preparation method of the gas generating agent composition with reduced combustion temperature and maintained appearance of the present invention specifically includes the following steps:
[0065] (1) The first material is obtained by mixing guanidine nitrate, basic copper nitrate, amidinourea copper nitrate, ammonium perchlorate and aluminum hydroxide. Mixing in mixing equipment, mixing time ≥5min; mixing equipment can be V-type mixer, three-dimensional multi-directional motion mixer, automatic lifting hopper mixer, vibration mill, ribbon mixer or acoustic resonance mixer.
[0066] (2) Add water to the first material and perform wet mixing for 20min-60min to obtain the second material, wherein the amount of water added is 6% to 15% of the total mass of the first material, preferably distilled water is added. The equipment for wet mixing is a kneader or a mixer, for example, a horizontal kneader, a vertical kneader, a ribbon mixer or an acoustic resonance mixer can be s...
Example Embodiment
[0096] Example 1
[0097] The gas generating agent composition contains the following components in mass percentage content:
[0098]
[0099] After these components are weighed, they are compressed into a disc with a diameter of 5mm and a thickness of 1.9mm by wet granulation and a rotary tablet press. The specific preparation method is: guanidine nitrate, basic copper nitrate, amidinourea copper nitrate, high Ammonium chlorate and aluminum hydroxide are mixed through a mixing device to obtain the first material; add the first material to 10% distilled water for wet kneading for 30 minutes to obtain the second material, and pass the second material through a 10-mesh screen to obtain the third material ; Dry the third material until the moisture content is less than 0.5% of the total mass of the third material, and then pass through a 10-mesh screen to obtain the fourth material; add talc to the fourth material and use a rotary tablet press Material shaping.
[0100] Put the prepar...
Example Embodiment
[0105] Example 2
[0106] The gas generating agent composition contains the following components in mass percentage content:
[0107]
[0108] After these components are weighed, they are compressed into a disc with a diameter of 5mm and a thickness of 1.9mm by wet granulation and a rotary tablet press. The specific preparation method is: guanidine nitrate, basic copper nitrate, amidinourea copper nitrate, high Ammonium chlorate and aluminum hydroxide are mixed through a mixing device to obtain the first material; add 15% distilled water to the first material for wet kneading for 40 minutes to obtain the second material, and pass the second material through a 40 mesh screen to obtain the third material ; Dry the third material until the moisture content is less than 0.5% of the total mass of the third material, and then pass through a 40-mesh screen to obtain the fourth material; add talc to the fourth material and use a rotary tablet press Material shaping.
[0109] Put the prepar...
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