Reinforcement Effect of Alumina and Silica on the Mechanical Properties of Mixture Polyesters (Unsaturated Polyester / Polyurethane)

In this study composite materials were prepared from based polymer mixture (B) (UPE/PU, 95/5) supported by alumina powders and silica with grain sizes (75 - 150) m, these samples were tested B and B1, B2 and B3 respectively. The samples were subjected to mechanical tests represented by bending test, compression, hardness and impact at laboratory temperature. The results showed that the Young modulus of bending test increased by increasing the strength, and the fracture resistance was reduced by increasing the reinforcement. As for compressive resistance, the maximum compressive resistance was for alumina - supported (B1) sample 51.29 MPa. The Hardness was increased by increasing reinforcement with a maximum value of 94.5 Hs.