Mechanical characterization of different epoxy resins enhanced with carbon nanofibers

Paulo Sérgio Pina dos Santos; A. Maceiras; S. Valvez; P.N.B. Reis

doi:10.3221/IGF-ESIS.55.15

Mechanical characterization of different epoxy resins enhanced with carbon nanofibers

Authors

Paulo Sérgio Pina dos Santos University of Beira Interior, Centre for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Depart. of Electromechanical Engineering, 6201-100 Covilhã, Portugal
A. Maceiras University of Beira Interior, Centre for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Depart. of Electromechanical Engineering, 6201-100 Covilhã, Portugal https://orcid.org/0000-0002-1948-6560
S. Valvez University of Beira Interior, Centre for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Depart. of Electromechanical Engineering, 6201-100 Covilhã, Portugal https://orcid.org/0000-0001-8285-1332
P.N.B. Reis University of Beira Interior, Centre for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Depart. of Electromechanical Engineering, 6201-100 Covilhã, Portugal

DOI:

https://doi.org/10.3221/IGF-ESIS.55.15

Keywords:

Composites, Epoxy resins, Carbon nanofibers, Mechanical properties

Abstract

Epoxy with carbon nanofibers (CNFs) are effective nano enhanced materials that can be prepared by easy and low-cost method. The present paper compares the improvements, in terms of flexural and viscoelastic properties, of two epoxy resins reinforced with different weight percentages (wt.%) of CNFs. These epoxy resins have different viscosities, and weight contents between 0% and 1% of CNFs were used to achieve the maximum mechanical properties. Subsequently, for the best configurations obtained, the sensitivity to the strain rate and the viscoelastic behaviour (stress relaxation and creep) were analysed based on international standards. It was possible to conclude that, for both resins, carbon CNFs promote significant improvements in all the studied mechanical properties, even for different contents by weight.

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Author Biographies

A. Maceiras, University of Beira Interior, Centre for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Depart. of Electromechanical Engineering, 6201-100 Covilhã, Portugal
S. Valvez, University of Beira Interior, Centre for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Depart. of Electromechanical Engineering, 6201-100 Covilhã, Portugal
P.N.B. Reis, University of Beira Interior, Centre for Mechanical and Aerospace Science and Technologies (C-MAST-UBI), Depart. of Electromechanical Engineering, 6201-100 Covilhã, Portugal

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Published

28-12-2020

Issue

Vol. 15 No. 55 (2021): January 2021

Section

Advanced Manufacturing and Processing

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

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How to Cite

Mechanical characterization of different epoxy resins enhanced with carbon nanofibers. (2020). Frattura Ed Integrità Strutturale, 15(55), 198-212. https://doi.org/10.3221/IGF-ESIS.55.15