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Mechanical and electrical properties of a polyester resin reinforced with clay-based fillers

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Abstract

In this study, composite polymer-based materials were fabricated, in which a significant proportion of polyester resin was substituted by low-cost and environmentally-friendly clay-based raw materials. The main objective is to improve mechanical properties while maintaining a reasonable electrical insulating behavior. A homogenized distribution of fillers within the matrix compatible with the processing parameters was obtained up to a maximum added fraction of 20 vol%. Mechanical characterization using uniaxial traction tests and Charpy impact pendulum machine showed that stress-to-rupture can be enhanced of approximately 25 %. In addition, fracture energy was doubled for the best formulation. Dielectric constant was decreased and loss factor was slightly increased when electrical resistivity remained almost constant. In general, the composite materials with metakaolin fillers exhibited higher mechanical properties and greater electrical insulating behavior. Microstructural observation showed the presence of decohesive agglomerates of particles at the interface with the matrix. The mechanical properties were found to be more sensitive than electrical properties to the homogeneity of filler dispersion in the matrix.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, UPT Timisoara, Bd. Mihai Viteazu, 300222, Timisoara, Romania

    Dorel Buncianu & Mihai Jadaneant

  2. Laboratoire SPCTS, Centre Européen de la Céramique, 12 Rue Atlantis, 87068, Limoges Cedex, France

    Nicolas Tessier-Doyen, Joseph Absi & Pascal Marchet

  3. Laboratoire XLIM, 123, Avenue Albert Thomas, 87060, Limoges Cedex, France

    Fabien Courreges

Authors
  1. Dorel Buncianu
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  2. Nicolas Tessier-Doyen
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  3. Fabien Courreges
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  4. Joseph Absi
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  5. Pascal Marchet
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  6. Mihai Jadaneant
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Corresponding author

Correspondence to Joseph Absi.

Additional information

Recommended by Associate Editor Sang-Hee Yoon

Buncianu is a Ph.D. graduate from the Polytechnic University of Timisoara. During his Ph.D. studies, he made a training period of 24 months in the University of Limoges under the European Mobility Funding. He developed an expertise in the field of elaboration and characterization of clay-based material. Moreover, he associated the numerical modeling by finite element method to the characterization and validation aspects.

Joseph Absi is a senior member of the SPCTS laboratory of the University of Limoges at European Ceramic Center. He earned a Bachelor degree in Mechanical Sciences and Engineering from the Technical Institute of the University of Limoges. His fields of interest include numerical simulation based on the finite element method, particularly on thermal and mechanical properties of a wide variety of materials.

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Buncianu, D., Tessier-Doyen, N., Courreges, F. et al. Mechanical and electrical properties of a polyester resin reinforced with clay-based fillers. J Mech Sci Technol 31, 1151–1156 (2017). https://doi.org/10.1007/s12206-017-0213-2

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  • DOI: https://doi.org/10.1007/s12206-017-0213-2

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