纺织学报 ›› 2022, Vol. 43 ›› Issue (04): 33-39.doi: 10.13475/j.fzxb.20210500107

• 纤维材料 • 上一篇    下一篇

丝瓜络基碳材料的电磁波吸收性能

叶伟1,2, 余进1,2, 龙啸云1,2(), 孙启龙1,2, 马岩1,2   

  1. 1.南通大学 安全防护用特种纤维复合材料研发国家地方联合工程研究中心, 江苏 南通 226019
    2.南通大学 纺织服装学院, 江苏 南通 226019
  • 收稿日期:2021-05-06 修回日期:2021-09-27 出版日期:2022-04-15 发布日期:2022-04-20
  • 通讯作者: 龙啸云
  • 作者简介:叶伟(1984—),男,高级实验师,硕士。主要研究方向为安全与防护用纺织品。
  • 基金资助:
    江苏省高校自然科学研究重大项目(21KJA430010);南通市科技项目(JC2020083)

Electromagnetic wave absorption performance of loofah-based carbon materials

YE Wei1,2, YU Jin1,2, LONG Xiaoyun1,2(), SUN Qilong1,2, MA Yan1,2   

  1. 1. National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong, Jiangsu 226019, China
    2. School of Textiles and Clothing, Nantong University, Nantong, Jiangsu 226019, China
  • Received:2021-05-06 Revised:2021-09-27 Published:2022-04-15 Online:2022-04-20
  • Contact: LONG Xiaoyun

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摘要：

为开发具有电磁损耗的新型纤维状电磁波吸收材料,采用天然丝瓜络作为碳质纤维的基材,通过原位杂化将Fe3O4负载到纤维的表面和内部孔隙中。借助扫描电子显微镜、X射线光电子能谱仪、磁滞回线和电磁参数分析等对材料的结构和性能进行表征。结果表明:丝瓜络基碳材料具有特殊的中空结构,生成的Fe3O4颗粒在纤维表面和内部孔隙中均匀分布,介电损耗、磁损耗和纤维结构间的协同作用增强了材料的电磁波损耗;当FeCl3浓度为2 mol/L,处理温度为700 ℃时,在2~18 GHz范围内,厚度为3 mm的试样在9.97 GHz处的电磁波损耗达到了-24.37 dB,在7.33~10.33 GHz频段内电磁波损耗小于-10 dB。丝瓜纤维通过合适的炭化及磁性颗粒负载工艺,可制备出性能优异的电磁波吸收材料。

关键词: 复合材料, 丝瓜纤维, Fe3O4, 介电损耗, 磁损耗, 电磁波吸收, 原位杂化技术

Abstract:

In order to develop a novel fibrous electromagnetic wave absorbing material, natural loofah was used as the base material of a carbon mesh, with Fe3O4 loaded onto the surface and internal pores of the loofah fiber through in-situ hybridization. The material properties were characterized and analyzed by scanning electron microscope, X-ray photoelectron spectrometer, vibrating sample magnetometer hysteresis loop analysis and electromagnetic parameter analysis. Results show that loofah-based carbon material preserves the special hollow structure, Fe3O4 particles are uniformly distributed on the fiber surface and internal pores, and the synergy between dielectric loss, magnetic loss and fiber structure enhances the electromagnetic wave loss of the material. When the solubility of FeCl3 is 2 mol/L and the processing temperature is 700 ℃, in the range of 2-18 GHz, and the sample has a thickness of 3 mm, the electromagnetic wave loss reaches -24.37 dB at 9.97 GHz, and at 7.33-10.33 GHz the electromagnetic wave loss in the frequency band is less than -10 dB. The loofah fiber can be prepared into electromagnetic wave absorbing material with excellent performance through suitable carbonization and Fe3O4 loading process.

Key words: composite material, loofah fiber, Fe3O4, dielectric loss, magnetic loss, electromagnetic wave absorption, in-situ hybridization technology

中图分类号: 

  • TS101

图1

丝瓜纤维表面及横截面SEM照片和EDS图"

图2

试样S0、S2的XPS能谱图和试样S2中O、Fe结合能分析图"

图3

室温下试样的磁滞回线"

图4

不同处理条件下试样的电磁参数曲线图"

图5

2~18 GHz范围内试样的电磁波损耗曲线"

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