الفهرس | Only 14 pages are availabe for public view |
Abstract Enhancements of the wear resistance of epoxy resins using various fillers is a challengeable and traditional procedure which provide good bed to produce more useful resins in their vast applications in depended industries. Reducing adhesion and enhancing hardness, stiffness and strength is the current solution to improve friction and wear behavior of epoxy resins. This improvement can be achieved quite successfully by using special fillers. In this work, mechanical properties of modified glass fib er reinforced epoxy (GFRE) with Ti02 nano particles of size 21 nm at different weight fractions (0, 1, 2, 3, 4 and 5 wt.%) were investigated. The manufactured composites were characterized by tensile, hardness, and pin-on-disk wear rate properties, followed by scanning electron microscopy of the manufactured specimens. Results indicate an enhancement in the mechanical properties of GFRE composites due to the addition of Ti02 nano particles. The ultimate tensile strength (UTS) increases as the content of Ti02 nano particles increases. This improvement in UTS reaches its highest value at Ti02 nano particles content of 5 wt.% with an increase in UTS of about 80% over the neat GFRE specimens. As the content of the Ti02 nano particles increases the hardness of the GFRE composite rods increases with 62.8% improvement of hardness for a content of 5 wt.% over neat GFRE specimens. At the same load and for constant sliding speed, as the content of Ti02 nano particles increases, the wear rate decreases. This may be attributed to the improvement of the hardness of the nano composites results from adding Ti02 nano particles. For all applied loads, at the same nano Ti02 content, wear rate |