具有双交联网络的高性能自愈聚合物复合膜，用于增强电磁干扰屏蔽

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Polymer Pub Date : 2025-05-28 DOI:10.1016/j.polymer.2025.128607

Zhe Zhang , Jingyi Hao , Shuai Ma , Qinghai Shu , Xijuan Lv

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引用次数: 0

摘要

开发高性能的自修复电磁干扰（EMI）屏蔽材料仍然具有挑战性，因为要在机械耐久性、导电性和自修复能力之间进行权衡。在此，我们设计了一种具有双交联网络的聚合物基复合膜，将纤维素纳米晶体（CNC）和硼酸结合在一起，以增强柔韧性和自愈效率。一种苯磺酸掺杂聚苯胺包覆石墨烯（G@PANI）填料，通过原位聚合合成，在聚乙烯醇（PVA）基体内形成有效的导电网络。该薄膜在x波段和ku波段的电磁干扰屏蔽效率（SE）高达50 dB，在水辅助条件下的自愈效率为95%。这项工作为智能电子和航空航天应用中耐用、灵活和自修复的电磁干扰屏蔽材料提供了一种有前途的策略。

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High-performance self-healing polymer composite films with dual-crosslinked networks for enhanced electromagnetic interference shielding

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High-performance self-healing polymer composite films with dual-crosslinked networks for enhanced electromagnetic interference shielding

Developing high-performance self-healing electromagnetic interference (EMI) shielding materials remains challenging due to the trade-off between mechanical durability, conductivity, and healing capability. Herein, we design a polymer-based composite film with a dual-crosslinked network, integrating cellulose nanocrystals (CNC) and boric acid to enhance flexibility and self-healing efficiency. A benzenesulfonic acid-doped polyaniline-coated graphene (G@PANI) filler, synthesized via in situ polymerization, forms an efficient conductive network within the polyvinyl alcohol (PVA) matrix. The resulting film achieves an EMI shielding effectiveness (SE) of up to 50 dB in the X-band and Ku-band and exhibits a self-healing efficiency of 95 % under water-assisted conditions. This work provides a promising strategy for durable, flexible, and self-healing EMI shielding materials in smart electronics and aerospace applications.

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来源期刊

Polymer 化学-高分子科学

CiteScore

7.90

自引率

8.70%

发文量

959

审稿时长

32 days

期刊介绍： Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in energy and optoelectronics. The main scope is covered but not limited to the following core areas: Polymer Materials Nanocomposites and hybrid nanomaterials Polymer blends, films, fibres, networks and porous materials Physical Characterization Characterisation, modelling and simulation* of molecular and materials properties in bulk, solution, and thin films Polymer Engineering Advanced multiscale processing methods Polymer Synthesis, Modification and Self-assembly Including designer polymer architectures, mechanisms and kinetics, and supramolecular polymerization Technological Applications Polymers for energy generation and storage Polymer membranes for separation technology Polymers for opto- and microelectronics.