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Development of Multi-Functional Graphene Polymer Composites Having Electromagnetic Interference Shielding and
Ji-Hwan Ha1, Soon-Kook Hong2, Jae-Kwan Ryu3
1Department of Mechanical Engineering, Soongsil University, 369 Sangdo-ro, Donjak-gu, Seoul 156-743, Korea.
Polymers
|December 19, 2019
Summary
This study introduces a novel graphene composite offering both electromagnetic interference (EMI) shielding and efficient de-icing capabilities. The material demonstrates excellent electrical conductivity for rapid, low-power heating, making it ideal for advanced applications.
Area of Science:
- Materials Science
- Nanotechnology
- Electrical Engineering
Background:
- Developing advanced materials with multiple functionalities is crucial for modern technological applications.
- Graphene's unique electrical and mechanical properties make it a promising filler for composite materials.
- Electromagnetic interference (EMI) shielding and de-icing are critical requirements in various sectors, including aerospace and electronics.
Purpose of the Study:
- To develop a multi-functional graphene composite with combined electromagnetic interference (EMI) shielding and de-icing properties.
- To investigate the relationship between graphene content, electrical properties, and EMI shielding performance.
- To evaluate the de-icing capabilities of the developed composite through electrical heating.
Main Methods:
- Homogeneous dispersion of two-dimensional graphene fillers in a polymer matrix using three-roll milling.
- Characterization of electrical properties and percolation threshold of graphene composites at various filler concentrations.
- Measurement of electromagnetic interference (EMI) shielding efficiency as a function of graphene content.
- Assessment of electrical heating performance via Joule heating tests.
Main Results:
- Increasing graphene content significantly improved the electromagnetic interference (EMI) shielding efficiency of the composites.
- The graphene composites exhibited high electrical conductivity, enabling rapid heating up to 200 °C with low electrical power.
- The composite demonstrated uniform and rapid heating, suitable for de-icing applications.
Conclusions:
- The developed graphene composite effectively integrates EMI shielding and de-icing functionalities.
- The material's performance is strongly dependent on graphene filler content and dispersion.
- This multi-functional composite shows significant potential for applications requiring both EMI protection and efficient thermal management, such as de-icing systems.
