具有优异电绝缘性、高导热性和良好电磁干扰屏蔽性能的 "砖泥 "多孔浸渍集料聚合物复合材料

IF 4.1 2区 化学 Q2 POLYMER SCIENCE
Hongxin Guo , Huiyao Feng , Tong Liu, Tairong Kuang
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引用次数: 0

摘要

5G 通信系统和现代电子设备的发展推动了对具有多功能性(包括电磁干扰(EMI)屏蔽、导热性、电绝缘性和机械坚固性)的先进聚合物复合材料的需求。然而,在单一聚合物材料中实现这些性能的最佳组合仍具有挑战性。为了应对这些挑战,我们开发了一种新型 "砖泥 "多孔浸渍隔离结构。这种结构由作为 "砖 "相的聚乳酸/多壁碳纳米管(PLA/CNTs)微球和作为 "泥 "相的聚丁二酸丁二醇酯/氮化硼(PBS/BN)组成。相互连接的多孔聚乳酸/CNTs 微球是通过乳液法制备的,这种方法可以在熔融混合过程中使 PBS/BN 基质有效渗透,从而形成坚固的界面。泥 "和 "砖 "的比例可以系统地改变,从而有助于调节不同多功能特性之间的平衡。所制成的复合材料性能卓越,电磁干扰屏蔽效果高达 ∼41.1 dB,热导率高达 ∼1.37 W-m-1-K-1,体积电阻率超过 101⁵ Ω-cm,机械强度高达 ∼54.2 MPa(取决于成分)。这些性能特点使这些复合材料特别适合用作 5G 通信设备的外壳,因为在这些设备中,高效的热管理、电磁干扰屏蔽和结构耐久性至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

“Brick-mud” porous impregnated-segregated polymer composites with excellent electrical insulation, high thermal conductivity, and good electromagnetic interference shielding

“Brick-mud” porous impregnated-segregated polymer composites with excellent electrical insulation, high thermal conductivity, and good electromagnetic interference shielding

“Brick-mud” porous impregnated-segregated polymer composites with excellent electrical insulation, high thermal conductivity, and good electromagnetic interference shielding
The advancement of 5G communication systems and modern electronic devices has driven the demand for advanced polymer composites with multifunctional capabilities, including electromagnetic interference (EMI) shielding, thermal conductivity, electrical insulation, and mechanical robustness. However, achieving an optimal combination of these properties in a single polymeric material remains challenging. Here, a novel “brick-mud” porous impregnated-segregated structure was developed to address these challenges. This structure consists of polylactic acid/multi-wall carbon nanotubes (PLA/CNTs) microspheres as the “brick” phase and polybutylene succinate/boron nitride (PBS/BN) as the “mud” phase. The interconnected porous PLA/CNTs microspheres were prepared via an emulsion method, which allowed effective infiltration by the PBS/BN matrix during melt blending, resulting in a robust interface. The ratio of “mud” to “brick” was systematically varied, facilitating regulation of the balance between the different multifunctional properties. The resulting composites demonstrated excellent performance, with EMI shielding effectiveness up to ∼41.1 dB, thermal conductivity up to ∼1.37 W m⁻1 K⁻1, volume resistivity exceeding 101⁵ Ω·cm, and mechanical strength as high as ∼54.2 MPa, depending on the composition. Such performance characteristics make these composites particularly suitable for use as casings for 5G communication equipment, where efficient thermal management, EMI shielding, and structural durability are critical.
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来源期刊
Polymer
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.
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