How does the inclusion of silica nanoparticles enhance the UV resistance of WPC tree boxes?

The inclusion of silica nanoparticles significantly enhances the UV resistance of Wood-Plastic Composite (WPC) tree boxes by acting as a protective barrier against harmful ultraviolet radiation. These nanoparticles disperse uniformly within the WPC matrix, absorbing and scattering UV rays before they can degrade the polymer and wood fibers. This prevents color fading, surface cracking, and structural weakening caused by prolonged sun exposure. Additionally, silica nanoparticles improve the thermal stability of WPC, further extending its lifespan in outdoor environments. The result is a more durable, long-lasting tree box that maintains its aesthetic and functional properties even under harsh sunlight. This innovation makes WPC tree boxes an even more reliable choice for urban landscaping and outdoor applications.