What is Flame Retardant Material?
Flame retardant material refers to a type of functional material that can inhibit, delay or stop the spread of flame when exposed to fire or high temperature. It either has inherent flame-resistant properties or gains such performance through chemical modification or physical treatment. This material is widely used in textiles, non-woven fabrics, and pet supplies, playing a critical role in reducing fire risks.
Core Flame Retardant Mechanisms
Flame retardant materials work through one or more of the following mechanisms to suppress combustion:
1.Endothermic cooling
The material decomposes at high temperatures and absorbs a large amount of heat from the environment, lowering the surface temperature below the ignition point and preventing further combustion. Common additives include aluminum hydroxide and magnesium hydroxide.
2. Oxygen barrier & char formation
When heated, the material forms a dense, non-combustible carbon layer on the surface. This layer isolates oxygen and heat transfer, blocking the supply of combustion-supporting substances and inhibiting flame spread.
3.Free radical chain reaction inhibition
Certain flame retardants release active substances that capture the free radicals generated during combustion, breaking the chain reaction of the combustion process and quickly extinguishing the flame.
Classification of Flame Retardant Materials
Flame retardant materials are divided into two categories based on their flame-retardant properties source:
Category | Characteristics | Common Examples |
Inherent flame retardant materials | Flame resistance is a natural property of the material itself; does not require additional modification; excellent durability and stability | Aramid fiber, glass fiber, polyphenylene sulfide (PPS) fiber |
Flame-retardant modified materials | Made by adding flame retardants to ordinary materials or conducting surface treatment; cost-effective and widely applicable | Flame-retardant PP non-woven fabric, flame-retardant polyester microfiber, flame-retardant cotton cloth |