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Related Experiment Video

Updated: Sep 24, 2025

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Published on: November 7, 2016

A self-assembled graphene/polyurethane sponge for excellent electromagnetic interference shielding performance.

Zhikang Hu¹, Xinxin Ji¹, Buyin Li¹

¹Key Laboratory of Electronic Information Functional Material of Electronic Information, Huazhong University of Science and Technology Wuhan Hubei 430074 China m201672054@hust.edu.cn +86-27-87542994.

|May 9, 2022

Summary

This summary is machine-generated.

Researchers developed a durable graphene/polyurethane sponge composite for electromagnetic interference (EMI) shielding. This material offers superior EMI shielding effectiveness, addressing electronic pollution concerns.

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Last Updated: Sep 24, 2025

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Area of Science:

Materials Science
Nanotechnology
Electrical Engineering

Background:

Growing demand for effective electromagnetic interference (EMI) shielding materials due to proliferation of electronic devices.
Graphene sponges show promise for EMI shielding due to conductivity and 3D structure, but lack elasticity and durability.
Need for advanced materials to mitigate electromagnetic pollution in military and civilian applications.

Purpose of the Study:

To develop a novel graphene/polyurethane sponge composite for enhanced EMI shielding.
To investigate the EMI shielding performance and durability of the synthesized composite material.
To introduce a facile synthesis method for high-performance EMI shielding materials.

Main Methods:

A two-step hydrothermal method was employed to synthesize the graphene/polyurethane sponge composite.
The composite material was characterized for its structural, electrical, and EMI shielding properties.
Specific EMI shielding effectiveness was measured and compared to existing materials.

Main Results:

The graphene/polyurethane sponge composite achieved a high specific EMI shielding effectiveness of 969-1578 dB cm² g⁻¹.
The material demonstrated comparable or superior performance to traditional graphene/polymer sponges.
The polyurethane scaffold provided structural integrity, enhancing the material's durability.

Conclusions:

The developed graphene/polyurethane sponge composite offers excellent EMI shielding performance and improved durability.
The two-step hydrothermal method is an efficient approach for creating high-performance EMI shielding materials.
This composite presents a viable solution for reducing electromagnetic pollution from electronic devices.