复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (10): 1-5.DOI: 10.19936/j.cnki.2096-8000.20251028.001

• 智能复合材料 •    下一篇

氨基化碳纳米管改性环氧胶黏剂的粘接性能和吸波性能优化设计

郑昆鹏, 汪俊陶, 刘泽同, 郝敬烨, 时建恒, 陈丁丁*   

  1. 国防科技大学 空天科学学院,长沙 210000
  • 收稿日期:2025-07-04 出版日期:2025-10-28 发布日期:2025-12-02
  • 通讯作者: 陈丁丁(1987—),男,博士,副教授,硕士生导师,研究方向为复合材料结构设计、复合材料修复技术、自修复树脂及其复合材料,dingdingmail@163.com。
  • 作者简介:郑昆鹏(2000—),男,硕士研究生,研究方向为高分子胶黏剂。

Optimized design on bonding and microwave absorption properties of MWCNT—NH2 reinforced epoxy adhesive

ZHENG Kunpeng, WANG Juntao, LIU Zetong, HAO Jingye, SHI Jianheng, CHEN Dingding*   

  1. College of Aerospace Science, National University of Defense Technology, Changsha 210000, China
  • Received:2025-07-04 Online:2025-10-28 Published:2025-12-02

摘要: 功能化复合材料结构的设计与连接通常需要用到兼具力学性能和优异电性能的胶黏剂。本文以多壁碳纳米管(Multi-Walled Carbon Nanotubes,MWCNT)及表面氨基化多壁碳纳米管(MWCNT—NH2)为改性填料,研究了两者含量及表面氨基化对环氧胶黏剂粘接性能与吸波性能的影响规律。结果表明:MWCNT对胶黏剂性能具有显著调控作用,随其含量增加,粘接强度呈先升高再降低的变化趋势,而吸波性能则随含量增加持续增强。表面氨基化改性通过提升MWCNT—NH2与环氧基体的界面相容性,显著优化了胶黏剂的粘接性能,但表面官能团的引入会导致MWCNT—NH2电子结构改变和导电网络破坏,致使MWCNT—NH2改性胶黏剂的吸波性能较未修饰氨基的MWCNT体系的吸波性能大幅下降。

关键词: 复合材料连接, 碳纳米管, 氨基, 胶黏剂, 粘接性能, 吸波性能

Abstract: The design and preparation of functionalized composite structures often require adhesives with both mechanical properties and excellent electrical performance. In this study, multi-walled carbon nanotubes (MWCNT) and surface-aminated multi-walled carbon nanotubes (MWCNT—NH2) were used as reinforcing fillers to investigate the effects of their contents and surface amination on the bonding and microwave absorption properties of epoxy adhesives. Results show that MWCNT significantly regulate the adhesive properties: with increasing content, the bonding strength exhibits a trend of first increasing and then decreasing, while the microwave absorption performance gradually enhances. Surface amination modification improves the interfacial compatibility between MWCNT—NH2 and the epoxy matrix, thereby significantly optimizing the bonding performance. However, the introduction of surface functional groups alters the electronic structure of MWCNT—NH2 and disrupts the conductive network, resulting in a substantial decline in the microwave absorption performance of the MWCNT—NH2-modified adhesive compared to that of the unaminated MWCNT system.

Key words: composite joining, CNT, amino, adhesive, bonding, microwave absorption

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