ZTA Asphalt Flame Retardant Asphalt Smoke Suppressant Additive for Tunnels

1. Description

    Asphalt burns easily at high temperatures and is difficult to extinguish, and releases a large amount of smoke and toxic gases. In the tunnel, once a fire occurs, the toxic gas released by the burning of asphalt will seriously threaten personal safety. At the same time, the combustion will cause the temperature in the tunnel to rise and poor visibility, making rescue difficult and causing explosions and other accidents.

2. Mechanism of flame retardant

• The large surface area contains layered materials, which can effectively absorb the light components in the asphalt.
• Asphalt flame retardant can form a stable carbonized layer on the asphalt surface, heat insulation, oxygen insulation, prevent combustible gas from escaping outward, stop the combustion, and produce self-extinguishing, which is equivalent to an isolation cover.
• Asphalt flame retardants can capture the highly active free radicals (HO- and H-) in the reaction at the initial stage of combustion, and inhibit the occurrence of chain reactions to fundamentally prevent combustion.
• Asphalt flame retardant can decompose incombustible gas, dilute the oxygen concentration and combustible gas concentration in the combustion zone, and prevent the spread of combustion.
• Asphalt flame retardant can decompose incombustible gas to dilute the concentration of combustible gas and prevent the spread of combustion.

3. Effect of flame retardant

1. Improve the flash point and oxygen index of asphalt, making it difficult to burn.

2. Reduce the emission of bitumen combustion smoke, reduce the probability of casualties in enclosed spaces such as tunnels or tunnels, and buy more time for firefighting and medical personnel.

3. Reduce the amount of smoke emitted and reduce the harm to operators.

4. After the asphalt pavement burns, the quality loss is small, the flying loss is small, and the residual stability is high.

4. Common flame retardant problems

1. Single component, low flame retardant efficiency, large addition amount, such as magnesium hydroxide, aluminum hydroxide, etc.

2. The product precipitates, which affects the appearance and releases toxic and harmful gases.

5. Product advantages

1. Halogen-free, non-toxic, environmentally friendly.

2. Good flame retardant effect, small addition amount, easy to disperse, good workability in construction.

3. Improve the performance of asphalt mixture for heat and water damage.