Abstract
The current trend in scientific researches is to improve the performance of mechanical and physical properties of polymeric compounds, one of these methods is to add nanoparticles to polymeric composites. In this work, the wear behaviour (pin to disc) of nanocomposites composed of vinyl ester reinforced glass fibers and nanoparticles was evaluated under three different factors, such as specimen content, load applied, and distance sliding using a sliding time constant, as well as studying the hardness shore for these nanocomposites. The (hand-lay) method was used for the purpose of preparing the nanocomposites from vinyl ester filled with 10% vf. glass fiber and (0.5%, 1%, 1.5%, and 2% vf. of nano-Fe3O4 and ZrO2). The results are tabulated and analysed using Taguchi experiments (L9) (Minitab 18) for the purpose of determining which of the factors under consideration had the greatest influence on the wear behaviour. From the results, it was found that the specimens (vinyl ester-10% vf. glass fibers-2% ZrO2) and (vinyl ester-10% vf. glass fibers-2% Fe3O4) give the best wear resistance 0.003×10-5, 0.012×10-5 mm3/Nm respectively under the factors (load 20 N, sliding distance 45 cm). It was found that the specimen content is the most important factor influencing the wear behaviour, followed by the factors of the applied load and then the sliding distance. The addition of nanoparticles (0.5-2% vf. ZrO2, Fe3O4) to the vinyl ester resin improved the hardness values. Furthermore, the findings show that the addition of nanoparticles (ZrO2, Fe3O4) had a positive effect on the (wear and hardness) tests, implying that the nanoparticles improved the bonding between the base material and reinforcing material.
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