1, non-flammable gas suffocation

Flame retardant after heat decomposition non-flammable gas, the fuel into combustible gas concentration diluted to combustion limit. Will dilute the combustion within the scope of the oxygen concentration, successful hinder the fire from spreading.

2, endothermic effect

Any heat released by burning in a relatively short time is limited, if you can in a relatively short time to absorb part of the fire produced by heat, the flame temperature will reduce, and ACTS on the surface will have radiation to the gasification of combustible molecules into free radicals can reduce quantity of heat, combustion reaction will be a certain degree of inhibition. Under the condition of high temperature, strong endothermic reaction happened flame retardants, absorb part of heat released by burning, lower the temperature of the fuel surface, effectively inhibit the formation of combustible gas, to prevent the spread of combustion. Al (OH) 3 flame retardant mechanism of the flame retardant is the heat capacity, by improving the polymer in the thermal decomposition temperature reached before absorbs more heat, so as to improve the flame retardant performance. This kind of flame retardant and give full play to its combination with the characteristics of water vapor when large amounts of heat to improve its flame retardant ability.

3, non-flammable gas suffocation

Flame retardants, decompose when heated non-flammable gas, the fuel into combustible gas concentration diluted to burning under the lower limit. Also oxygen concentrations of combustion zone have the function of the dilution, prevent burning continued, reach the role of flame retardant.

4, inhibition of chain reaction

According to the combustion theory of chain reaction, is necessary to sustain the burning free radicals. Flame retardant can be applied to the gas phase combustion zone, capture the combustion reaction of free radicals, preventing the spread of flame, make the flame burning area density decreased, eventually make the combustion reaction speed down until the end. Such as containing halogen flame retardant, its evaporation temperature and polymer decomposition temperature of the same or similar, when polymer thermal decomposition, flame retardant also comes out at the same time. As containing halogen flame retardant with thermal decomposition product at the same time in the gas phase combustion zone, halogen can capture the combustion reaction of free radicals, preventing the spread of flame, make the flame burning area density decreased, eventually make the combustion reaction speed down until the end.