what is the flame retardant mechanism

1. Provide a layer of coating isolated from oxygen, such as the phosphide generated during the combustion of phosphate flame retardant, which is the oxygen isolated coating.
2. Free radicals that can react with plastics are generated to play a flame retardant role. The combustion performance of their reaction products with plastics is very poor.
3. Produce a gas that can smother the flame, such as antimony trioxide, which reacts when it meets HCl emitted by combustion in PVC to produce a smothering gas, namely the nitrogen oxide of antimony.
4. It absorbs the heat generated during combustion and plays the role of cooling and slowing down the combustion rate, such as aluminum hydroxide. The proportion of chemical association water contained in its molecules is as high as 34%. This association water remains stable at the processing temperature of most plastics, but it begins to decompose when it exceeds 200 ℃ and release effluent steam. Moreover, it needs to absorb 36 kcal of heat for each gram of aluminum hydroxide decomposed. More consultation and attention shall be paid to Fuqiang flame retardant.