How does the inclusion of basalt fibers enhance the fire resistance of WPC outdoor trash cans?

The inclusion of basalt fibers significantly enhances the fire resistance of Wood-Plastic Composite (WPC) outdoor trash cans by fundamentally altering the material's behavior when exposed to high heat or flames. Basalt fibers are inherently non-combustible, possessing an extremely high melting point that exceeds 1,400°C (2,552°F). When integrated into the WPC matrix, these fibers act as a robust, heat-resistant skeleton. During a fire event, they form a protective barrier that insulates the underlying material, slows down the rate of combustion, and prevents the plastic component from melting and dripping rapidly. This barrier effect also reduces the release of flammable gases from the decomposing plastic, effectively suppressing the spread of flames. Furthermore, basalt fibers improve the structural integrity of the trash can under extreme heat, helping it maintain its shape for a longer period and preventing catastrophic failure. This makes WPC trash cans equipped with basalt fibers a much safer choice for public spaces, reducing fire hazards and contributing to overall community safety.