1. Endothermic effect The heat released during the combustion process heats the raw material, making it quickly reach the ignition point. The principle of endothermic flame retardancy is that the material needs to absorb a large amount of heat during the combustion process, which can reduce the heating process of the material. It is difficult for the free radicals cracked by the converted combustible molecules to reach the ignition point, which inhibits the progress of combustion to a certain extent.
2. The high temperature generated when the covering material burns makes the Flame Retardant form a glassy or stable foam covering layer to isolate oxygen, so that it not only insulates and insulates oxygen, but also prevents the escape of combustible gas, so as to achieve the purpose of flame retardancy.
3. Inhibition of chain reaction According to the chain reaction theory of combustion, free radicals are needed to maintain combustion. Flame retardants can act on the gas phase combustion zone to capture free radicals in the combustion reaction, thereby preventing the spread of flames, reducing the flame density in the combustion zone, and ultimately reducing the combustion reaction speed until it stops.
4. Non-combustible gas suffocation The flame retardant decomposes non-combustible gas when heated, and dilutes the concentration of combustible gas from combustibles to below the lower combustion limit. At the same time, it also dilutes the oxygen concentration in the combustion zone, prevents the combustion from continuing, and achieves the effect of flame retardancy.
Novista Group supplies DBDPE, BDDP, FR245, SR130 to global market.
