As an indispensable natural phenomenon, combustion needs to meet three conditions, namely a certain temperature, oxygen and flammable substances. The flame retardant additive can usually play the role of cooling and heat absorption, isolating the oxygen source and preventing further combustion, and can also have the functions of plasticizing, modifying and filling.
There are many commonly used flame retardant additives, but they can be roughly divided into inorganic and organic categories. Inorganic flame retardant additives include non-combustible powders such as hydroxides and inorganic salt metal oxides. The advantages are that the cooling and isolation effects are strong. It can be flame retarded by diluting the concentration of combustibles.
There are also many organic flame retardant additives, one of which is a halogen element. Since the combustion produces a hydrogen halide having a density greater than that of air, it can sink to isolate oxygen. The other is a phosphorus flame retardant, which is based on a phosphate ester and has a plasticizing modification function.
In the process of using flame retardant additives, the coordination between flame retardant effect, performance, cost and safety should be fully considered. Therefore, the coordinated use of various flame retardant additives should be considered, the advantages are complementary, and it is safe, efficient and smokeless. Combine the principles to achieve the best results.