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      https://www.ias.ac.in/article/fulltext/boms/042/03/0098

    • Keywords

       

      Carbon nanotubes; silanation; carboxylation; amination; carbonylation; wear; fatigue.

    • Abstract

       

      The main focus of this work is to improve the mechanical, wear and fatigue behaviours of polyoxymethylene (POM) by reinforcing with carbon nanotubes (CNTs). To improve compatibility between CNTs and POM, the surface of theCNTswas modified by various methods of functionalization like carboxylation, silanation, carbonylation and amination. The functionalized CNTs were characterized by Fourier transform infrared spectroscopy to confirm the different functional groups attached to the surface. POM/CNT nanocomposites were developed with functionalized CNTs in different concentrationsvarying from 0.25 to 2 wt%. Nanocomposites with 1 wt% of silanated CNTs resulted in maximum improvement of tensile, flexural and impact properties. Furthermore, experimental results on fatigue and dry sliding wear tests revealed that the fatigue strength, specific wear rate and friction coefficient are sensitive to functionalization and concentration of CNTs.

    • Author Affiliations

       

      BHANU K GORIPARTHI1 P N E NAVEEN2 H RAVI SANKAR3 SOMNATH GHOSH4

      1. Department of Mechanical Engineering, IIIT RK Valley, RGUKT-AP, RK Valley 516330, India
      2. Department of Mechanical Engineering, Godavari Institute of Engineering and Technology, Rajahmundry 533201, India
      3. Department of Mechanical Engineering, Central Research Laboratory (CRL), GITAM University, Visakhapatnam 530045, India
      4. Faculty of Chemistry, Indian Institute of Petroleum and Energy (IIPE), Visakhapatnam 530003, India
    • Dates

       
  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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