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Advances in Nano Research
  Volume 13, Number 1, July 2022 , pages 97-111

The influence of nano-silica on the wear and mechanical performance of vinyl-ester/glass fiber nanocomposites
Navid Sokhandani, AliReza Setoodeh, Seyed Mojtaba Zebarjad, Kamran Nikbin and Greg Wheatley

    In the present article, silica nanoparticles (SNPs) were exploited to improve the tribological and mechanical properties of vinyl ester/glass fiber composites. To the best of our knowledge, there hasn't been any prior study on the wear properties of glass fiber reinforced vinyl ester SiO2 nanocomposites. The wear resistance is a critical concern in many industries which needs to be managed effectively to reduce high costs. To examine the influence of SNPs on the mechanical properties, seven different weight percentages of vinyl ester/nano-silica composites were initially fabricated. Afterward, based on the tensile testing results of the silica nanocomposites, four wt% of SNPs were selected to fabricate a ternary composite composed of vinyl ester/glass fiber/nano-silica using vacuum-assisted resin transfer molding. At the next stage, the tensile, three-point flexural, Charpy impact, and pin-on-disk wear tests were performed on the ternary composites. The fractured surfaces were analyzed by scanning electron microscopy (SEM) images after conducting previous tests. The most important and interesting result of this study was the development of a nanocomposite that exhibited a 52.2% decrease in the mean coefficient of friction (COF) by augmenting the SNPs, which is beneficial for the fabrication/repair of composite/steel energy pipelines as well as hydraulic and pneumatic pipe systems conveying abrasive materials. Moreover, the weight loss due to wearing the ternary composite containing one wt% of SNPs was significantly reduced by 70%. Such enhanced property of the fabricated nanocomposite may also be an important design factor for marine structures, bridges, and transportation of wind turbine blades.
Key Words
    coefficient of friction; energy applications; mechanical properties; SiO2 vinyl ester nanocomposites; wear resistance; wind turbine blades
Navid Sokhandani and AliReza Setoodeh: Department of Mechanical and Aerospace Engineering, Shiraz University of Technology, Shiraz 71555, Iran

Seyed Mojtaba Zebarjad: Department of Materials Science and Engineering, Engineering Faculty, Shiraz University, Shiraz, 7194685115, Iran

Kamran Nikbin: Department of Mechanical Engineering, Imperial College London, London SW7 2AZ. UK

Greg Wheatley: College of Science and Engineering, James Cook University, Townsville QLD Australia

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