Open AccessMechanical characterization of different epoxy resins enhanced with carbon nanofibers
Author(s) -
P. Santos,
Alberto Maceiras,
Sara Valvez,
P.N.B. Reis
Publication year - 2020
Publication title -
frattura ed integrità strutturale
Language(s) - English
Resource type - Journals
ISSN - 1971-8993
DOI - 10.3221/igf-esis.55.15
Subject(s) - epoxy , materials science , viscoelasticity , composite material , carbon nanofiber , flexural strength , creep , carbon fibers , carbon nanotube , composite number
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.