Endothermic Decomposition: ATH decomposes at ~180°C, absorbing heat and releasing water vapor, which cools the material and dilutes flammable gases.
Smoke Suppression: Reduces smoke and toxic gas emissions during combustion.
ｃｈａｒ Formation: Promotes a stable ｃｈａｒ layer, acting as a physical barrier to delay flame spread.
Advantages:
Eco-Friendly: Halogen-free, non-toxic, and safe for the environment.
Synergistic Effects: Can be combined with other flame retardants (like magnesium hydroxide or phosphorus-based additives) for enhanced performance.
Cost-Effective: Widely available and affordable compared to many other flame retardants.
Multi-Functionality: Acts as both a flame retardant and a filler, improving mechanical properties in certain materials.
Applications:
Plastics & Polymers: PVC, polyethylene, polypropylene, and rubber.
Building & Construction: Insulation panels, roofing materials, and composite panels.
Wire & Cable Insulation: In electrical cables and conduits for fire safety.
Textiles & Coatings: Used in back-coatings and industrial fabrics for flame resistance.
Adhesives & Sealants: Enhances the flame-retardant properties of various bonding materials.
Processing Considerations:
Particle Size & Loading: Smaller particles improve dispersion, but high loadings (up to 60%) might affect mechanical properties.
Thermal Decomposition Limit: Since ATH starts decomposing at relatively low temperatures (~180°C), it’s better suited for low to medium processing temperature materials.
