How does the use of biochar as a filler influence the thermal stability of WPC outdoor trash cans?

The use of biochar as a filler significantly improves the thermal stability of Wood-Plastic Composite (WPC) outdoor trash cans. Biochar, a carbon-rich material produced from biomass pyrolysis, acts as a highly effective thermal stabilizer within the WPC matrix. Its porous structure and high thermal mass help to absorb and dissipate heat, reducing the overall thermal degradation of the plastic polymer component when exposed to sunlight and high outdoor temperatures. This mitigation of heat buildup minimizes expansion, warping, and loss of mechanical strength in the trash cans. Furthermore, biochar can scavenge free radicals generated by UV exposure, slowing down the photo-oxidative degradation process. The result is a WPC product with enhanced durability, a longer service life, and better performance in challenging outdoor environments, making it a superior choice for sustainable municipal and residential waste management solutions.