In daily life, we often hear the term "flame retardant, but the understanding of flame retardant mostly stay in this level," fire "fire prevention principle is not very clear about it. Here, we come to understand the flame retardant mechanism of the flame retardant.

1, provides a layer of coating with oxygen isolation, such as the production of phosphate ester flame retardant burns phosphide is oxygen insulation coating.

2, generate free radicals can react with plastic, flame retardant effect, their reaction products with plastic combustion performance is poor.

3, produce a kind of can smother the flames of gases, such as antimony trioxide, it encountered in PVC burning of HCL smothered react when they produce a gas, namely antimony oxide.

4, absorb heat during burning, cooling slow burn rate effect, such as aluminum hydroxide, contained in its molecular chemical association water is as high as 34%, the proportion of the association of water in most plastics processing temperature stable, but more than 200 ℃ when began to decompose, releasing water vapor, and each decomposition molar aluminum hydroxide, 36 kilocalorie quantity of heat to absorb