| 摘要 |
The invention relates to fire-extinguishing technology, in particular a process for producing aerosol-forming pyrotechnical compositions for extinguishing fires. The process includes the steps of mixing powdery combustible binder, oxidizing agent and dicyandiamide. The combustible binder is a polycondensate of formaldehyde and a organic compound, of a fraction from 70 to 120 mum. The oxidizing agent is an alkali nitrate of a fraction from 15 to 25 mum. The dicyandiamide is a fraction from 40 to 80 mum. Subsequently, there is added to the above, respective fractions of the combustible binder of 10 to 25 mum of the oxidizing agent of 1 to 7 mum and of the dicyandiamide of 7 to 15 mum. The weight ratios of the fractions of combustible binder, oxidizing agent and dicyandiamide are 70:30, 25:75 and 80:20. The resulting mixture is molded while the content of the components is 9 to 20 weight percent dicyandiamide, 6 to 14 weight percent combustible binder, and the balance weight percent oxidizing agent.
|
