| The paper introduces a gas generating agent for automobile safety airbag. This gas generating material is a solid solution which comprises of a water soluble liquid and a hydrophilic gelling agent. It regards hydroxylammonium nitrate (HAN) as the main oxidant and ammonium nitrate(AN ) as the second oxidant . And water is regarded as the solvent. The preferred gelling agent is Polyvinyl acetate which comprises carbon atoms in an effective amount to function as a fuel with the liquid oxidizer .The preparation of the gel with fixed shape by means of gel test has been introduced and the influence factors of the technique process(time, temperature) of the gel preparation have been discussed. The prescription is choused and filled through controlling the content of water of the system; The prescription is determined and filled through zero- oxygen -balance; Based on the closed bomb test, the combustion characteristics of different samples are studied and the prescription bestly is defined; The feasibility analysis is carried on though 60L pressure tank. The results of above-mentioned experiments show that the higher burning rates and the larger volume product of this kind of gas generating agent can meet the requirements of automobile safety airbag. Gas chromatography shows the gas product is clean relatively. This is a new type of gas-generating agent, which the oxidizer is a kind of liquid oxidizer. This gas-generating gent has fine characteristic. And the research of this kind of gas generating gent is an innovation in domestic field. This study can offer some thought of the application of liquid oxidizer for gas generating agent,which may serve as a basis or reference for further study on calculation and design of gas generator .
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