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Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)

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2022
Determination_of_Mechanical_pub_2022.pdf (6.136Mb)
Authors
Jelić, Aleksandra
Sekulić, Milica
Travica, Milan
Gržetić, Jelena
Ugrinović, Vukašin
Marinković, Aleksandar D.
Božić, Aleksandra
Stamenović, Marina
Putić, Slaviša
article (publishedVersion)
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Abstract
In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate,... magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.

Keywords:
3D DIC / DMA / epoxy resin / silicate nanofillers / tensile properties
Source:
Polymers, 2022, 14, 6, 1255-
Publisher:
  • MDPI
Funding / projects:
  • info:eu-repo/grantAgreement/MESTD/inst-2020/200325/RS// (RS-200325)

DOI: 10.3390/polym14061255

ISSN: 2073-4360

WoS: 000774485900001

Scopus: 2-s2.0-85127539303
[ Google Scholar ]
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5110
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  • Radovi istraživača (Inovacioni centar) / Researchers’ publications (Innovation Centre)
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