مطالعه گراديان دانسيته در سه نوع تخته خرده چوب ايران

Density Profile in Three Types of Iranian Made Particleboards

Density profiles in three types of Iranian made particleboards were assessed through X-ray microdensitometric method. In the studied particleboards the density in surface layer was higher than that in core layer. The density profile in one was symmetric and normal while in the other two it was more asymmetric and also and lessnormal. Hterogeneity was observed in value as well as form longitudinal profiles in these particleboards. The modulus of elasticity in particleboard with normal profile is observed to be more than that in the others.