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Introduction To The Flame Retardant Properties Of Microfiber Leather

Among the many advantages of microfiber leather, one of the more prominent advantages is that it has good flame retardant properties. For leather materials, flame retardancy is undoubtedly a technology that breaks through common sense, because as a textile material, flammability is its biggest feature. So, how does microfiber leather achieve flame retardancy? This is related to the addition of its flame-retardant technology in its production process. So, what is the flame-retardant principle of microfiber leather?

According to the different flame retardant methods of microfiber leather, it can be roughly divided into three methods: gas phase flame retardant, condensed phase flame retardant and heat absorption:

1. Gas phase flame retardant. In the gas phase, it plays a flame-retardant effect that interrupts combustion or delays the chain combustion reaction, such as halogen-based flame retardants. The mechanism of action is that the leather treated with flame retardants releases non-combustible gases such as CO2, NH3, HCl, H2O and SO2 when heated. These gases reduce the concentration of oxygen in the combustion zone. In addition, the thermal decomposition products of the flame retardant when the leather burns capture a large number of high-energy hydroxyl radicals and hydrogen radicals in the flame zone, reducing their concentration, thereby inhibiting or interrupting the chain reaction of combustion, and exerting a flame retardant effect. In this regard, flame retardants are mainly halogen-based, nitrogen-based, and so on.

2. Endothermic effect. Flame retardant with high heat capacity, it will undergo endothermic decomposition reactions such as phase change, dehydration or dehydrohalogenation at high temperature, which will reduce the temperature of the leather surface and flame zone, slow down the rate of thermal cracking reaction, and inhibit the formation of combustible gases . Such flame retardants are magnesium hydroxide and aluminum hydroxide.

3. Condensed phase flame retardant-covering effect. The flame retardant delays or prevents the generation of flammable gases and free radicals in the solidification phase; the inorganic fillers in the flame retardant materials with larger specific heat capacity make the material difficult to reach the thermal decomposition temperature through heat storage and heat conduction, and the flame retardant material decomposes and absorbs heat from the outside The heat causes the outside temperature to decrease; when the flame-retardant material burns, a non-flammable, heat-insulating, and oxygen-insulating porous carbon layer is formed on the surface of the flame-retardant material, causing the combustion to stop. The process of action is that the flame retardant presents a molten state at a relatively low temperature, which can form an insulating layer on the surface of the collagen fiber to cover it; the flame retardant can also dehydrate the collagen fiber and form a carbonized layer on the surface of the collagen fiber , Isolate the entry of oxygen and external heat sources, and prevent the escape of flammable gases. Representative flame retardants in this regard include borax, phosphorus, and nitrogen-phosphorus composite systems.

Many consumers have some questions about the effectiveness of the flame retardant properties of microfiber leather. Through the above introduction, we can find that the above three methods are completely achievable, and you can buy with confidence.

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