EXPERIMENTAL INVESTIGATION OF FLEXURAL AND IMPACT PROPERTIES OF PMMA REINFORCED BY BAMBOO AND RICE HUSK POWDERS

In this research, studying the influence of insert two different types of reinforcing particles, which included: Rice Husk and Bamboo powders which were practical size (25 and 75 µm) and utilize at four various concentrations of (2, 4, 6, and 8 wt.%), to improve in the properties of flexural and impact for heat-cure acrylic resin. The composite specimens of resin and powders were cured at temperature 70-100 °C in a water bath and 2.5 bar for 2 hours. The results showed that the flexural and impact properties became better with low particle size and high concentration. The highest value of flexural strength was (114 Mpa.) for (PMMA- 8% Ba) composite specimens at particles size (25 µm). And the highest value of impact strength was (14.2 KJ/m²) for (PMMA-8%RH) composite specimen at particles size (25 µm)