Flame retardants can prevent or inhibit the physical or chemical changes in the combustion process of polymer materials. These effects are reflected in the following aspects: heat absorption effect, covering development, dilution effect, and inhibition effect.
Flame retardant is the booster of polymer synthetic materials. Flame retardant can be used for the flame retardant treatment of polymer materials, so as to avoid material burning and prevent fire spread, to promote the smoke suppression, self-extinguishing, and flame retardancy of synthetic materials.
The basic principle of flame retardant is to interfere with the combustion of combustibles. Generally, it occurs in four situations.
Reduce the temperature of polymer surface through endothermic decomposition or endothermic sublimation of flame retardant.
Flame retardants can produce a large amount of incombustible gas, which can dilute the concentration of combustible gas and oxygen.
Use flame retardants to capture active free radicals to interrupt chain oxidation reactions.
Flame retardant can produce very heavy noncombustible gas or high boiling liquid, cover the surface of plastic, and block the connection between oxygen and combustibles.
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