Preparation and Electromagnetic Wave Absorption Properties of Thermoplastic Polyurethane/Multi-walled Carbon Nanotubes/Fe<sub>3</sub>O<sub>4</sub> Composites

Ze-jun Pu; Ling-yu Li; Jia-hong Pang; Zhen-zhen Tan; Xiu-ling Cao; Yu-feng Tan; Jiao-hong Li; Jia-chun Zhong

doi:10.11777/j.issn1000-3304.2026.26131

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Preparation and Electromagnetic Wave Absorption Properties of Thermoplastic Polyurethane/Multi-walled Carbon Nanotubes/Fe₃O₄ Composites

更新时间：2026-08-04

- Preparation and Electromagnetic Wave Absorption Properties of Thermoplastic Polyurethane/Multi-walled Carbon Nanotubes/Fe₃O₄ Composites
- Acta Polymerica Sinica Pages: 1-12(2026)
- 作者机构：
  
  四川轻化工大学材料科学与工程学院四川省材料腐蚀与防护重点实验室自贡 643000
- 作者简介：
  
  Ze-jun Pu, E-mail: puzejunuestc@163.com
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2026.26131
  CLC：
- CSTR：32057.14.GFZXB.2026.7645
- Received：22 April 2026，
  
  Accepted：26 May 2026，
  
  Online First：04 August 2026，
- 稿件说明：
移动端阅览
蒲泽军, 李玲玉, 庞佳宏, 谭珍珍, 曹秀玲, 谭钰凤, 李宏蛟, 钟家春. 热塑性聚氨酯/多壁碳纳米管/四氧化三铁复合材料的制备及电磁吸波性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26131.

Pu, Z. J.; Li, L. Y.; Pang, J. H.; Tan, Z. Z.; Cao, X. L.; Tan, Y. F.; Li, H. J.; Zhong, J. C. Preparation and electromagnetic wave absorption properties of thermoplastic polyurethane/multi-walled carbon nanotubes/Fe₃O₄ composites. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26131. CSTR: 32057.14.GFZXB.2026.7645.
蒲泽军, 李玲玉, 庞佳宏, 谭珍珍, 曹秀玲, 谭钰凤, 李宏蛟, 钟家春. 热塑性聚氨酯/多壁碳纳米管/四氧化三铁复合材料的制备及电磁吸波性能. 高分子学报, doi: 10.11777/j.issn1000-3304.2026.26131. DOI： CSTR： 32057.14.GFZXB.2026.7645.

Pu, Z. J.; Li, L. Y.; Pang, J. H.; Tan, Z. Z.; Cao, X. L.; Tan, Y. F.; Li, H. J.; Zhong, J. C. Preparation and electromagnetic wave absorption properties of thermoplastic polyurethane/multi-walled carbon nanotubes/Fe₃O₄ composites. Acta Polymerica Sinica (in Chinese), doi: 10.11777/j.issn1000-3304.2026.26131. CSTR: 32057.14.GFZXB.2026.7645. DOI：

摘要

聚焦热塑性聚氨酯(TPU)/多壁碳纳米管(MWCNT)/四氧化三铁(Fe

)复合材料制备与性能研究. 先使用溶液法原位聚合制备出TPU/MWCNT，再使用双螺杆熔融共混工艺制备出不同Fe

含量的TPU/MWCNT/Fe

复合材料，系统研究了填料含量对复合材料的聚集态结构、微观形貌、热学和电磁吸波等性能的影响. 结果表明，Fe

与MWCNT在TPU中均分散良好，无明显的团聚现象. 复合材料的

随着Fe

含量的增加而轻微升高，其中Fe

添加量为40 wt%时

达到了-29.61 ℃，相比于仅仅添加MWCNT的样品提高了4.66 ℃. 此外，Fe

的引入有效调节了复合材料的复介电常数与复磁导率，优化其阻抗匹配特性的同时引入了磁损耗机制，达到了X频段全吸收，最高反射损耗达到-34.49 dB. 该工作为柔性吸波材料的结构设计提供了新思路，在可穿戴电磁防护、柔性电子器件屏蔽及隐身涂层等领域具有广泛的应用前景.

Abstract

This study focuses on the preparation and property investigation of thermoplastic polyurethane/multi-walled carbon nanotube/ferroferric oxide (TPU/MWCNT/Fe

) composites. Aiming at the problems of uneven dispersion and easy agglomeration of MWCNTs in the traditional twin-screw melt blending process

TPU/MWCNT was synthesized by solution-based

in situ

polymerization

and then TPU/MWCNT/Fe

composites with different Fe

loadings (10 wt%

20 wt%

30 wt% and 40 wt%) were prepared

via

twin-screw melt blending. The effects of the filler content on the aggregate structure

micromorphology

thermal properties

and electromagnetic wave absorption performance of the composites were systematically studied. The results showed that Fe

and MWCNTs were well dispersed in the TPU matrix without obvious agglomeration. The glass transition temperature (

) of the composites increased slightly with increasing Fe

content. Specifically

the

of TPU-M6F40 reached -29

.61 ℃

which is 4.66 ℃ higher than that of TPU/M6. In addition

the introduction of Fe

effectively regulates the complex permittivity and complex permeability of the composites

thereby optimizing their impedance-matching characteristics and introducing a magnetic loss mechanism. The composites achieved full absorption in the X band

with a minimum reflection loss of -34.49 dB. This work provides a new design concept for flexible absorbing materials and has broad application prospects in fields such as wearable electromagnetic protection

shielding of flexible electronic devices

and stealth coatings.

关键词

Keywords

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Preparation and Electromagnetic Wave Absorption Properties of Thermoplastic Polyurethane/Multi-walled Carbon Nanotubes/Fe3O4 Composites

DOI：10.11777/j.issn1000-3304.2026.26131

摘要

Abstract

关键词

Keywords

references

Preparation and Electromagnetic Wave Absorption Properties of Thermoplastic Polyurethane/Multi-walled Carbon Nanotubes/Fe₃O₄ Composites