الفهرس 
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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