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Related Experiment Video

Updated: May 26, 2026

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles

Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles

Published on: August 16, 2012

Porous Core-Shell PU Composite Membrane with a AgNW Conductive Network for Electromagnetic Shielding.

Shuo Zhang¹, Zhao Wang¹, Tao Xie¹

¹Industrial Research Institute of Nonwovens & Technical Textiles, College of Textile & Clothing, Qingdao University, Qingdao 266071, People's Republic of China.

|May 25, 2026

Summary

This summary is machine-generated.

New flexible electromagnetic interference (EMI) shielding materials made from porous core-shell polyurethane (PU) fibers loaded with silver nanowires (AgNWs) maintain high performance under strain.

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Area of Science:

Materials Science
Nanotechnology
Electrical Engineering

Background:

Electromagnetic interference (EMI) shielding materials often lack mechanical flexibility and long-term stability under deformation.
High EMI shielding effectiveness and low reflection are crucial to prevent secondary electromagnetic wave pollution.

Purpose of the Study:

To develop a novel, mechanically robust, and highly effective EMI shielding material.
To investigate the EMI shielding performance of porous core-shell polyurethane fibers loaded with silver nanowires under various mechanical stimuli.

Main Methods:

Fabrication of porous core-shell polyurethane (PU) fibers using coaxial wet spinning.
Loading of silver nanowires (AgNWs) onto the PU fiber substrate to form an interconnected conductive network.
Characterization of the composite's microstructure, mechanical properties (elastic elongation > 1500%), and EMI shielding effectiveness (SE).

Main Results:

The AgNW-loaded PU composite demonstrated excellent structural stability through thermal adhesion.
A composite with 36 mg AgNWs achieved an EMI shielding efficiency of 39.41 dB.
The material retained an EMI shielding efficiency exceeding 23.14 dB even under 10% tensile strain.

Conclusions:

The developed porous core-shell PU/AgNW composite offers superior EMI shielding performance with exceptional flexibility and stability.
This material is suitable for applications requiring lightweight, bendable, and durable EMI shielding solutions.