The components of fire retardants for foam usually include the following categories:
Phosphorus compounds: Phosphorus flame retardants are important components of foam flame retardants, and common ones include phosphate esters and phosphates. They release phosphate ions, promote carbonization and form an isolation layer, and slow down the combustion process.
Halogen compounds: Halogen compounds such as chlorine and bromine can decompose at high temperatures and release flame-retardant gases (such as chlorine and bromine), which can reduce the spread of flames by diluting oxygen and heat.
Nitrogen compounds: Nitrogen-containing compounds can form a carbonization layer when burning, isolate oxygen, and thus reduce the spread of flames. These components help to improve the flame retardant properties of foam.
Inorganic flame retardants: Such as aluminum hydroxide (Al(OH)₃), magnesium hydroxide (Mg(OH)₂), etc. These compounds will decompose when heated, release water and absorb heat, thereby effectively inhibiting the spread of flames.
Organic flame retardants: For example, bromine-containing compounds, which can effectively reduce the combustion rate by decomposing and releasing bromine atoms.
These ingredients work together in fire retardants for foams to reduce flammability, inhibit the spread of flames, and improve safety. Different types of foam materials will select different flame retardant ingredients according to specific usage requirements.
