Properties of gypsum particleboard reinforced with polypropylene fibers

Abstract

This paper details the influence of the length and content of polypropylene (PP) fibers on the physical and mechanical properties of gypsum particleboard (GPB). The length and amount of PP fibers added had a significant effect on the internal bond strength (IB) and the modulus of rupture (MOR) of GPB. The highest IB value was shown at 9mm length and 9% content of PP fibers. The MOR was highest when the board was made with PP of 12mm fiber length and 12% content. Suitable contents of PP fibers were advantageous in that they reinforced the properties of GPB so it achieved high performance. In contrast, a high content of PP fibers reduced the IB, MOR, and modulus of elasticity (MOE) of GPB. The thickness swelling was reduced with an increase in PP length and content. It was concluded that the combination of 12mm length and 12% content or 3mm length and 9% content was optimum for producing good performance of GPB. © The Japan Wood Research Society 2001.