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Endothermic effect of flame retardant

Oct 29, 2019

The heat released by any combustion in a short period of time is limited. If a part of the heat released by the fire source can be absorbed in a short time, the flame temperature will be lowered, radiated to the combustion surface and acted on the gasification. The heat of flammable molecules cleavage into free radicals is reduced, and the combustion reaction is suppressed to some extent. Under high temperature conditions, the flame retardant undergoes a strong endothermic reaction, absorbs part of the heat released by combustion, reduces the temperature of the surface of the combustible material, effectively suppresses the formation of flammable gases, and prevents the spread of combustion. The flame retardant mechanism of Al(OH)3 flame retardant is to increase the heat capacity of the polymer to absorb more heat before reaching the thermal decomposition temperature, thereby improving its flame retardant performance. Such flame retardants fully exert their characteristics of inhaling heat when combined with water vapor, and improve their own flame retardant ability