How does resin impact modifier content affect notch sensitivity in WPC flower boxes?
The notch sensitivity of Wood-Plastic Composite (WPC) flower boxes is significantly influenced by the content of resin impact modifiers. These modifiers enhance the material's toughness by absorbing and dissipating energy upon impact, reducing the likelihood of crack propagation from notches or stress concentrations. Higher modifier content typically improves resistance to brittle fracture, making the WPC more durable in outdoor environments. However, excessive amounts may compromise stiffness or dimensional stability. Optimizing the modifier ratio ensures balanced mechanical properties, critical for long-term performance in garden and decorative applications. Testing methods like Charpy or Izod impact tests are often used to evaluate notch sensitivity in such composites.
