The present invention relates to a fire extinguishing composition generatingfireextinguishing substance through high-temperature decomposition; the fireextinguishing composition includes a fire extinguishing material which can bedecomposed to release substance with fire extinguishing properties during theheating process; the content of the fire extinguishing material is at least80wt%; apyrotechnic agent is adopted as a heat source and a power source in a processoffire extinguishing; and the purpose of fire extinguishing is achieved by:igniting thepyrotechnic agent, generating a large quantity of fire substance from the fireextinguishing composition in the use of high temperature produced by burningpyrotechnic agent, and the fire substance sprays out together with thepyrotechnicagent. Compared with the traditional aerosol fire extinguishing systems, thegas fireextinguishing systems and the water type extinguishing systems, the presentinvention provides a more efficient and safer fire extinguishing composition.
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