Determination of mechanical properties of two-phase and hybrid nanocomposites: experimental determination and multiscale modeling
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Mahmoud Haghighi
Abstract
In this paper, the effects of filler content and the use of hybrid nanofillers on agglomeration and nanocomposite mechanical properties such as elastic moduli, ultimate strength and elongation to failure are investigated experimentally. In addition, thermoset epoxy-based two-phase and hybrid nanocomposites are simulated using multiscale modeling techniques. First, molecular dynamics simulation is carried out at nanoscale considering the interphase. Next, finite element method and micromechanical modeling are used for micro and macro scale modeling of nanocomposites. Nanocomposite samples containing carbon nanotubes, graphene nanoplatelets, and hybrid nanofillers with different filler contents are prepared and are tested. Also, field emission scanning electron microscopy is used to take micrographs from samples’ fracture surfaces. The results indicate that in two-phase nanocomposites, elastic modulus and ultimate strength increase while nanocomposite elongation to failure decreases with reinforcement weight fraction. In addition, nanofiller agglomeration occurred at high nanofiller contents especially higher than 0.75 wt% in the two-phase nanocomposites. Nanofiller agglomeration was observed to be much lower in the hybrid nanocomposite samples. Therefore, using hybrid nanofillers delays/prevents agglomeration and improves mechanical properties of nanocomposite at the same total filler content.
Acknowledgements
The authors would like to appreciate the use of the computational clusters of the High Performance Computing Center (Shahrekord University, Iran) for completing this work.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Material properties
- A review on tribo-mechanical properties of micro- and nanoparticulate-filled nylon composites
- Determination of mechanical properties of two-phase and hybrid nanocomposites: experimental determination and multiscale modeling
- Polyurethane modified epoxy vitrimer and its stress relaxation behavior
- Preparation and assembly
- Simvastatin-loaded graphene oxide embedded in polycaprolactone-polyurethane nanofibers for bone tissue engineering applications
- Preparation and heat insulation of Gemini-halloysite aerogel/concrete composites
- Engineering and processing
- Improving dispersive mixing in compatibilized polystyrene/polyamide-6 blends via extension-dominated reactive single-screw extrusion
- Enhancing performances of hemp fiber/natural rubber composites via polyhydric hyperbranched polyester
- Water purification performance enhancement of PVC ultrafiltration membrane modified with tourmaline particles
Articles in the same Issue
- Frontmatter
- Material properties
- A review on tribo-mechanical properties of micro- and nanoparticulate-filled nylon composites
- Determination of mechanical properties of two-phase and hybrid nanocomposites: experimental determination and multiscale modeling
- Polyurethane modified epoxy vitrimer and its stress relaxation behavior
- Preparation and assembly
- Simvastatin-loaded graphene oxide embedded in polycaprolactone-polyurethane nanofibers for bone tissue engineering applications
- Preparation and heat insulation of Gemini-halloysite aerogel/concrete composites
- Engineering and processing
- Improving dispersive mixing in compatibilized polystyrene/polyamide-6 blends via extension-dominated reactive single-screw extrusion
- Enhancing performances of hemp fiber/natural rubber composites via polyhydric hyperbranched polyester
- Water purification performance enhancement of PVC ultrafiltration membrane modified with tourmaline particles
