Interaction analysis between slenderness ratio and resin content on mechanical properties of particleboard

The interaction between particle size and resin content is one of the most important structural parameters that can influence the accuracy of predictions about wood-composite properties. We developed three kinds of equation （linear, quadratic, and exponential） for each mechanical property of particleboard based on slenderness ratio and resin content at a constant density （0.7g cm -3 ）. Results from SHAZAM software （version 9） suggested that the quadratic function was not significant, but the linear and exponential functions were significant. The interaction between particle size and resin content was analyzed by Maple 9 software. The results indicated that an exponential function can better describe the simultaneous effect of slenderness and resin content than a linear equation. Under constant resin content, particles with higher slenderness ratios increased more in modulus of rupture （MOR） and modulus of elasticity （MOE） than did particles with lower slenderness ratios. Edge withdrawal resistance （SWRe） values did not increase with increasing slenderness ratio.