Investigation of physical properties and impact strength composites include rice straw treated by silane

In this research, effects of concentration and time of silane treatment of rice straw flour on the physical properties and impact strengths of rice straw flour/polypropylene composites were investigated. In order to of the two concentration of 5 and 10% silane that each concentration had two immersion time 45 and 90 min using for rice straw flour treatments. The simples with cross section, 70
10 mm for physical properties were made using a laboratory twin-screw extruder. For blending the internal raw materials, mixer Haake machines and for making standard testing samples the injection molding were used. The result shown that with increases concentration and time silane treatments rice straw flour water absorption and thickness swelling, sample treatments compare sample without treatments decreases, also impact strength composites with increases concentration and time silane rice straw flour were increases.