3D-Printed Lightweight MXene-CNTs/Polylactic Acid Composite with Excellent Electromagnetic Interference Shielding and Mechanical Properties

IF 2.6 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Engineering and Performance Pub Date : 2026-07-16 DOI:10.1007/s11665-026-14563-x

Lin-lin Zhu, Hong-mei Zuo, Xiaoqi Jin, Lidong Wen, Zhong-bi Chen, Song Fu

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Abstract

With the rapid popularization of electronic products and communication devices, the exploitation of electromagnetic interference (EMI) shielding composites has become extremely urgent to meet the requirements of electromagnetic protection. Herein, four kinds of MXene–carbon nanotubes/polylactic acid (MXene-CNTs/PLA) composites with 10 wt.% CNTs and different MXene content, respectively, of 0, 0.5, 1.0, and 1.5 wt.% were prepared by 3D printing technology. The results showed that MXene and CNTs were successfully introduced in PLA and they were uniformly distributed in PLA. Thermal decomposition temperature (T_2%) and maximum decomposition temperature (T_max) of all modified PLA decreased compared to pure PLA, while their residual carbon content increased significantly. The printed samples exhibited lightweight and excellent EMI shielding performances. Compared with the pure 3D-printed 10wt.% CNTs/PLA sample with an EMI shielding efficiency (EMI SE) with 3.43 dB, the EMI SE of 1.0wt.%MXene–10wt.%CNTs/PLA could reach up to 39.37 dB and its specific shielding effectiveness (SSE_t) was 176.63 dB·cm²·g⁻¹. Moreover, its tensile strength could reach 104.76 MPa, significantly higher than that of pure PLA. The excellent EMI SE and mechanical performance endow 3D-printed PLA-related composite with great potential use in industry area.

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3d打印具有优异电磁干扰屏蔽和机械性能的轻质MXene-CNTs/聚乳酸复合材料

随着电子产品和通信设备的迅速普及，开发电磁干扰（EMI）屏蔽复合材料以满足电磁保护的要求已迫在眉睫。本文采用3D打印技术制备了4种CNTs含量为10 wt.%， MXene含量分别为0、0.5、1.0和1.5 wt.%的MXene-碳纳米管/聚乳酸（MXene-CNTs/PLA）复合材料。结果表明，MXene和碳纳米管被成功引入PLA中，并在PLA中均匀分布。与纯PLA相比，改性PLA的热分解温度（T2%）和最大分解温度（Tmax）均有所降低，残余碳含量显著增加。打印的样品具有轻质和优异的电磁干扰屏蔽性能。与纯3d打印的10wt相比。% CNTs/PLA样品的EMI屏蔽效率（EMI SE）为3.43 dB， EMI SE为1.0wt.% MXene-10wt。%CNTs/PLA最高可达39.37 dB，比屏蔽效能（SSEt）为176.63 dB·cm2·g−1。拉伸强度可达104.76 MPa，明显高于纯PLA。优异的电磁干扰和力学性能使3d打印pla相关复合材料在工业领域具有巨大的应用潜力。

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来源期刊

Journal of Materials Engineering and Performance 工程技术-材料科学：综合

CiteScore

3.90

自引率

13.00%

发文量

1120

审稿时长

4.9 months

期刊介绍： ASM International''s Journal of Materials Engineering and Performance focuses on solving day-to-day engineering challenges, particularly those involving components for larger systems. The journal presents a clear understanding of relationships between materials selection, processing, applications and performance. The Journal of Materials Engineering covers all aspects of materials selection, design, processing, characterization and evaluation, including how to improve materials properties through processes and process control of casting, forming, heat treating, surface modification and coating, and fabrication. Testing and characterization (including mechanical and physical tests, NDE, metallography, failure analysis, corrosion resistance, chemical analysis, surface characterization, and microanalysis of surfaces, features and fractures), and industrial performance measurement are also covered