The Impact Behavior of Ecofriendly Cellulosic Fiber-Based Packaging Composites


  • Detao Liu
  • Yue Chen


Impact behavior, cellulosic fiber-based packaging composites, cushioning coefficients, peak acceleration


Wood-fiber composites with densities of 80, 90, and 100 kg·m-3 were created using a single-component polyurethane that was foamed by steam injection. The impact behavior of the composite was studied by static and dynamic tests. The dynamic impact curves of the composites were concave and upward. Decreasing densities or increasing resin content resulted in better dynamic cushioning properties. The minimum static cushioning coefficients were much lower and increased more slowly than the minimum dynamic cushioning coefficients with increases of density. Mathematical relations for minimum static and dynamic cushioning coefficients and densities were established. With the increase of initial dynamic shock stress the residual thickness-peak acceleration curve shifted to reduced residual thickness and higher peak acceleration. Dynamic maximum stresses were much higher and increased more sharply than static maximum stresses. These results can be used to optimize the structure and properties of the composites and evaluate the potential of applications in the packaging industry.


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Research Contributions