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A Mechanics Based Surface Image Interpretation Method for Multifunctional Nanocomposites
Brina J Blinzler1, Ragnar Larsson1, Karolina Gaska2
1Division of Material and Computational Mechanics, Department of Industrial and Materials Science, Chalmers University of Technology, SE-412 96 Göteborg, Sweden.
Nanomaterials (Basel, Switzerland)
|November 10, 2019
Summary
This study introduces a new modeling approach for graphene-reinforced polymers, improving material properties. The framework accurately predicts mechanical and thermal responses, highlighting the Kapitza effect's role.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Graphene and graphite nanoplatelets enhance polymer properties.
- Optimizing dispersion, de-agglomeration, and orientation is key to tailoring microstructure.
- Understanding nano-structure behavior in polymer matrices is crucial.
Purpose of the Study:
- To propose a novel surface image-assisted modeling framework for graphene-enhanced polymers.
- To computationally assess the effective thermal and mechanical responses of these composites.
- To validate the model by comparing simulation results with experimental data.
Main Methods:
- A surface image-assisted modeling framework was developed.
- Computational homogenization was used to assess effective thermal and mechanical properties.
- 2-D nanoplatelets were modeled as internal interfaces for mechanical response and high-conductivity regions for thermal response.
Main Results:
- The model accurately predicted macroscopic stiffness and thermal conductivity.
- Reasonable effective mechanical and thermal properties were obtained.
- The Kapitza effect was identified as significant for effective thermal properties.
Conclusions:
- The proposed surface image-assisted modeling framework is effective for predicting properties of graphene-reinforced polymers.
- Computational homogenization provides a reliable method for assessing composite behavior.
- The Kapitza effect significantly influences the thermal performance of these materials.
