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Nanoindentation of Multifunctional Smart Composites
Zhenxue Zhang1, Denise Bellisario2, Fabrizio Quadrini2
1School of Metallurgy and Materials, University of Birmingham, Birmingham B15 2TT, UK.
Polymers
|July 27, 2022
Summary
This study uses nanoindentation to analyze three smart composites, including carbon nanotubes (CNTs)-reinforced polypropylene and shape memory polymer composites (SMPCs). Findings reveal material properties and interactions, aiding next-generation applications in fans and aerospace.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Multifunctional smart composites are crucial for advanced applications.
- Understanding material properties and interactions is key to optimizing composite performance.
Purpose of the Study:
- To investigate the mechanical properties and interfacial behavior of three distinct smart composites using nanoindentation.
- To explore the structure-property relationships and smart functionalities of these advanced materials.
Main Methods:
- Nanoindentation techniques, including mapping, push-out tests, and temperature-dependent indentation, were employed.
- Characterization of carbon nanotubes (CNTs)-reinforced polypropylene (PP V-2) nanocomposite, carbon fiber (CF)/resin interfaces, and smart shape memory polymer composite (SMPC).
Main Results:
- Mapping indentation revealed hardness and modulus distribution in CNTs-PP V-2, identifying potential non-uniformities.
- Push-out tests quantified interfacial properties between CF and resin, assessing surface modification effectiveness.
- Temperature-dependent nanoindentation probed the in situ response of SMPC, determining shape memory triggering temperatures.
Conclusions:
- Nanoindentation is a versatile technique for characterizing multifunctional smart composites.
- The study provides critical data for optimizing the production and application of advanced composites in areas like impeller fans and aerospace grabbing devices.
