A kind of chlorine-free low-melting-point thermoplastic gas generating agent and preparation method thereof

Abstract

The invention relates to a chloride-free low-melting point thermoplastic fuel gas generator and a preparation method thereof, and belongs to the technical field of composite solid propellants. The chloride-free low-melting point thermoplastic gas generator is prepared from the following components in percentage by mass: 60 to 80 percent of an oxidant, 1 to 20 percent of a cooling agent, 1 to 3 percent of a combustion regulator, 5 to 10 percent of a low-melting point thermoplastic adhesive, 1 to 5 percent of an assistant and 1 to 10 percent of a plasticizing agent. The chloride-free low-meltingpoint thermoplastic fuel gas generator prepared by the invention contains no metal powder and has lower combustion temperature and clear gas, and the defect of atmospheric pollution caused by HCl generated in a combustion product due to the use of ammonium perchlorate in an existing gas generator is overcome; through the chloride-free low-melting point thermoplastic gas generator, melt mixing ata lower temperature (smaller than 95 DEG C) can be realized, the preparation safety of a thermoplastic propellant is greatly increased, continuity of production and repeated processing of waste products can be realized, and the production cost is reduced.

Description

technical field [0001] The invention relates to a chlorine-free low-melting thermoplastic gas generator and a preparation method thereof. The gas generator can be applied to gas generators and other gas generators, and belongs to the technical field of composite solid propellants. Background technique [0002] Ammonium perchlorate (AP) has the advantages of high oxygen balance, wide range of sources and low price. As a cost-effective oxidant, it is widely used in the field of gas generating agents. Usually, the mass fraction in gas generating agents can be It reaches about 70%, but the gas generating agent containing AP will produce a large amount of HCl gas during the combustion process, which will cause air pollution and destroy the ozone layer when it is discharged into the atmosphere, and combine with moisture in the air to produce acid mist or acid rain. It will cause serious damage to human beings and nature. With the gradual enhancement of people's awareness of enviro...

AI Technical Summary

Problems solved by technology

[0002] Ammonium perchlorate (AP) is widely used in the field of gas generating agents as a cost-effective oxidant due to its high oxygen balance, wide range of sources, and low price. Usually, the mass fraction in gas generating agents can be It reaches about 70%, but the gas generating agent containing AP will produce a large amount of HCl gas during the combustion process, which will cause air pollution and destroy the ozone layer when it is discharged into the atmosphere, and combine with moisture in the air to produce acid mist or acid rain. Serious damage to human beings and nature. With the gradual enhancement of people's awareness of environmental protection, chlorine-free gas generators have attracted more and more research interests of scientific researchers.