水热共混法制备TiC@CNTs复合材料的抗氧化与电磁性能研究

鲁艳艳; 刘顾; 汪刘应; 葛超群; 王滨; 许可俊

doi:10.7643/issn.1672-9242.2025.08.012

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装备环境工程 ›› 2025, Vol. 22 ›› Issue (8) : 89-99. DOI: 10.7643/issn.1672-9242.2025.08.012

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水热共混法制备TiC@CNTs复合材料的抗氧化与电磁性能研究

鲁艳艳, 刘顾^*, 汪刘应^*, 葛超群, 王滨, 许可俊

作者信息 +

Antioxidation and Electromagnetic Properties of TiC@CNTs Composite Materials Prepared by Hydrothermal Mixing Method

LU Yanyan, LIU Gu^*, WANG Liuying^*, GE Chaoqun, WANG Bin, XU Kejun

Author information +

文章历史 +

摘要

目的基于碳纳米管易氧化的特性限制其在高温环境中的应用,对CNTs进行合理改性,以提高其抗氧化能力,拓宽其有效工作温度。方法通过水热法结合硅烷偶联剂的表面改性,制备TiC@CNTs复合吸波材料。结果通过硅烷偶联剂的功能化处理和水热反应,不仅增强了CNTs的抗氧化性能,使其氧化温度提升了40 ℃,还通过TiC与CNTs间的化学位点反应,有效改善了CNTs的阻抗匹配性能,拓宽了有效吸波频段。研究发现,当TiC与CNTs的质量比为1︰1,厚度为3.72 mm时,复合材料在5.7~7.4 GHz、8~14 GHz和15~18 GHz频段展现出优异的微波吸收性能,反射率均低于-10 dB,有效覆盖C波段、X波段和Ku波段;当质量比为1︰1.5,厚度为2.27 mm时,在10.64~18 GHz频段表现出最大有效带宽。结论这种优异的电磁波吸收性能主要归因于电导损耗以及材料内部的多重极化弛豫过程。该研究为开发高性能、宽频带的高温吸波材料提供了新的思路和方法。

Abstract

Based on the susceptibility of carbon nanotubes (CNTs) to oxidation, which limits their application in high-temperature environments, the work aims to rationally modify CNTs to enhance their oxidation resistance and broaden their effective operating temperature range. TiC@CNTs composite absorbing materials were successfully prepared by a hydrothermal method combined with surface modification with silane coupling agents. The functionalization treatment with silane coupling agents and hydrothermal reaction not only enhanced the oxidation resistance of CNTs, raised the oxidation temperature by 40 ℃, but also effectively improved the impedance matching performance of CNTs through the chemical site reaction between TiC and CNTs, broadening the effective absorbing frequency band. It was found that when the mass ratio of TiC to CNTs was 1:1 and the thickness was 3.72 mm, the composite material exhibited excellent microwave absorbing performance in the frequency bands of 5.7-7.4 GHz, 8-14 GHz, and 15-18 GHz, with reflection rates all below -10 dB, effectively covering the C band, X band, and Ku band. When the mass ratio was 1:1.5 and the thickness was 2.27 mm, the maximum effective bandwidth was shown in the frequency band of 10.64-18 GHz. This outstanding electromagnetic wave absorbing performance is mainly attributed to the conductive loss and multiple polarization relaxation processes within the material. This research provides new ideas and methods for the development of high-performance, wide-band, and high-temperature absorbing materials.

导出引用

鲁艳艳, 刘顾, 汪刘应, 葛超群, 王滨, 许可俊. 水热共混法制备TiC@CNTs复合材料的抗氧化与电磁性能研究[J]. 装备环境工程. 2025, 22(8): 89-99 https://doi.org/10.7643/issn.1672-9242.2025.08.012

LU Yanyan, LIU Gu, WANG Liuying, GE Chaoqun, WANG Bin, XU Kejun. Antioxidation and Electromagnetic Properties of TiC@CNTs Composite Materials Prepared by Hydrothermal Mixing Method[J]. Equipment Environmental Engineering. 2025, 22(8): 89-99 https://doi.org/10.7643/issn.1672-9242.2025.08.012

中图分类号： TJ04

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