Skin-inspired self-healing polycaprolactone-based composite induced by photo/electro stimuli for highly absorbed and stable electromagnetic interference shielding

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外文摘要：The endeavor to attain prolonged stability and heightened electromagnetic interference shielding effec-tiveness(EMI SE)in polymer-matrix composites remains an arduous pursuit,particularly when subjected to external mechanical trauma or adverse environmental conditions.In this context,a self-healing and efficient EMI shielding polycaprolactone(PCL)composite with a unique electromagnetic gradient and interface-metalized segregated structure is assembled through layer-by-layer casting and a hot-pressing process.The combined effect of the induction of the electromagnetic gradient layer and the massive mul-tiple interface reflection and scattering from the segregated-like structure results in an exceptional EMI SE of 57.0 dB and a low reflection(R)value of only 0.28.Additionally,the composite boasts impressive photothermal and electrothermal properties,allowing for self-healing under solar irradiation or electri-cal stimulation.Remarkably,this self-healing capability has been demonstrated through five cutting and healing cycles,exhibiting an impressive EMI SE retention rate of 88％.Consequently,the composite with rapid photo/electro-driven self-healing properties will be able to maintain EMI shielding performance.

外文关键词：

Polymer-matrix compositesMultifunctional compositesPhoto/electro-drivenSelf-healingElectromagnetic interference shielding

作者：

Minghuan Hou、Jian Wang

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作者单位：

School of Materials Science and Engineering,Xihua University,Chengdu 610039,China

基金：

Sichuan Science and Technology ProgramSichuan Science and Technology ProgramSichuan Science and Technology Program

项目编号：

2023YFG02102022YFG027624NSFSC1700

出版年：

2024

DOI：

10.1016/j.jmst.2024.01.079

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.197(30)