Investigating on Effect of Particle Form and Mixing Method on applied Properties Green Composite

Nowadays Paulownia as the fast growing species has noticed for wood industry in the world. In this research، Paulownia fortuni planted in Shaskolateh forest of Gorgan were studied. Two particle form، flour (60 mesh size) and fiber (RMP، L/D= 21/54) were prepared. 60 percent of this material with 37% of HDPE، 3% of MAPE were blended separately. Part from this material by internal mixer and other part by extruder blended. Output was prepared like pellets. Samples were prepared in dimensions of 30cm×30cm×1cm، and nominal density 1 g/cm3 by hot press. The mechanical testing of the panels (flexural، hardness، unnotched impact strength) and the physical testing of the panels (thickness swelling and water absorption after 2 & 24 hours immersion in water) were measured. The result showed that modulus of rupture، hardness، unnotched impact strength of composite made of fiber-PE were lower than composite made of flour-PE. Flexural elastic modulus of composite made of fiber-PE were higher than flour-PE. Water absorption and thickness swelling of composite made of fiber-PE were higher than flour-PE. Also physical and mechanical properties of composites blended by internal mixer improved in compared composites blended by extruder. Physical and mechanical properties of composite made of fiber-PE blended by internal mixer improved in compared composite made of fiber-PE blended by extruder.