Studying Mechanical Properties For Polymer Matrix Composite Material Reinforced By Fibers And Particles


The work focuses on the preparation of hybrid polymer matrix compositematerials prepared from the unsaturated polyester resin as matrix reinforced by wovenglass fiber kind ( E-glass ) and graphite particles as first group of samples and the secondgroup of samples reinforced with woven Kevlar fiber kind (49) instead of glass fiber.This work includes studying the effect of selected volume fractions ( 0% , 5% , 10% ,15% , 20% ) of graphite particles with mixture of different particle Size of ( 25 μm – 106μm ) on the properties of the prepared composite materials, Number of mechanical testswere done,they include (Tensile, Compression, Impact, Flexural Strength, Shear Stressand Hardness), which done at room temperature Result of the work shows that thevalues of (Tensile stress, Tensile elastic modulus, Fracture Toughness, Hardness)increase with the increase of graphite particle volume fraction for both groups samples.As well as the values of the (Compression elastic modulus, Flexural strength, Shearstress) increase with the increase of low values of graphite particles volume fraction forboth groups of samples. Where as the values of Impact strength of the preparedcomposite material decreased with the increases of volume fraction of graphite particlesfor both group samples. As well the result shows that the values (Tensile stress, Tensileelastic modulus, impact strength, Fracture toughness) for hybrid composite materialsreinforced by Kevlar fiber are higher than values reinforced by glass fiber instead ofKevlar fiber, While the values of (Compression stress, Flexural Strength, Shear stress,Hardness) for hybrid composite materials reinforced by glass fiber are higher than valuesreinforced by Kevlar fiber instead of glass fiber.