The purpose of flame retardant technology is to make non-flame retardant materials have flame retardant properties, not easy to burn under certain conditions or can self-extinguish. Flame retardant methods are as follows:
1, flame retardant agent can be combustor carbonization, so as to achieve the flame retardant effect. This flame retardant effect mainly plays a role in the solid phase, this kind of flame retardant materials are mainly phosphorus flame retardants (including organic phosphorus and inorganic phosphorus).
2, flame retardant in the combustion conditions to form a non-volatile membrane, isolated from the air to achieve the purpose of flame retardant. This flame retardant effect mainly plays a role in the liquid phase. This class of flame retardant materials are mainly borate, halide, antimony oxide and phosphorus materials, or these materials react with each other to form the material.
3. The decomposition products of flame retardants cut off the hydroxyl radical chain reaction to achieve the purpose of flame retardant. This flame retardant effect mainly plays a role in the gas phase. This class of materials operates primarily in the gas phase. These flame retardant materials are mainly halide and antimony oxide.
4. Dispersion of combustion heat and dilution of combustible substances. This kind of flame retardant material is mainly zinc borate, aluminum hydroxide, magnesium hydroxide and other materials, mainly due to the decomposition of a large number of heat absorption, the generation of non-combustible material dilution flammable gas and achieve the purpose of flame retardant. Generally, non - toxic, economical and synergistic flame retardant materials should be used in flame retardant systems. Common flame retardant systems are: halogen - antimony oxide, phosphorus - nitrogen. However, the most commonly used is the mixed flame retardant system, which can ensure the integrated flame retardant performance. According to the standard, the flame retardant performance of the product is generally tested by the combustion experiment of alcohol torch or the propane combustion experiment of simulated roadway.
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