Gas generating powder used for gas generator of automobile safety airbag and preparation method thereof

Abstract

The invention discloses an aerogenic drug used in gas generator of automobile safety gas cell and its preparing method, composed of negative oxygen combustible agent, oxidant, slagging agent, and adhesive; it adopts a wet-mixing extrusion molding technique for preparing and the drug has very weak toxicity; suitable for large-scale low-cost production, and has a little dust in producing course, high safety; and has high gas generating efficiency, 1.7 times about as high as that of sodium azide aerogenic drug; etc. It simplifies the filter system of the gas generator and creates important conditions for the development of miniaturizing and lightening the gas generator. It can meet the requirements, is a non-azide aerogenic drug and can replace the sodium azide aerogenic drug and is used in the current popular multiple gas generators of automobile safety gas cells.

Description

technical field [0001] The invention relates to a medicament, in particular to a gas-generating medicine mainly used in gas generators of automobile safety airbags and a preparation method thereof. The gas-generating medicine can also be used in other types of gas generators. Background technique [0002] Automobile airbags and seat belt pretensioners are widely used, and there are many types of gas-generating medicines in airbag gas generators, but no matter which kind of gas-generating medicine is used, it must meet the following requirements: safe and reliable, suitable for ignition It must be fired when it should be fired, and it must not be fired when it should not be fired; in various environments, the relevant function (P-T curve) should meet the requirements of the automotive airbag gas generator industry; the generated gas is basically non-toxic and non-corrosive , no harm or damage to personnel and equipment; the detonation heat of the gas-generating drug should be...

AI Technical Summary

Problems solved by technology

[0003] In the past, gas generators often used gas-generating medicines containing sodium azide (called azide-type gas-generating medicines). This kind of medicine has two major disadvantages: one is that sodium azide is highly toxic. The process brings harm and pollution to the production personnel and the environment; secondly, most of the drugs adopt the dry mixing and tableting process, the dust in the production process is large, and safety accidents such as deflagration are prone to occur