Scholarlink

<p>Electromagnetic wave (EMW) absorption materials are widely used in electronic equipment and military fields. However, high cost and complex preparation processes become a major obstacle in promoting popularization in the civil field. To solve these problems, people have made great efforts to develop carbon-based magnetic composites. Hollow carbon loaded Fe<sub>2</sub>O<sub>3</sub> nanocomposites assembled by liquid-phase electrostatic adsorption are presented as microwave absorber with thermal insulation properties. First successful integration of chemical liquid-phase deposition with plasma arc technology to construct uniform iron oxide coatings on hollow carbon spheres, overcoming typical nanoparticle aggregation issues. Compared with the previously typical composites materials, the present hollow carbon loaded Fe<sub>2</sub>O<sub>3</sub> nanocomposite achieve the enhanced broadband EM absorption due to enhanced impedance matching and increased electric dipoles, which are related to the multiple interfaces between layers. The optimal 40 wt% Hollow C/Fe<sub>2</sub>O<sub>3</sub> filled in paraffin shows a minimum reflection loss (RL) -53.64 dB with a thickness of 1.78&#xa0;mm and 5.66&#xa0;GHz (RL &lt; -10 dB) absorbing bandwidth with thickness of 1.9&#xa0;mm. Furthermore, Hollow C/Fe<sub>2</sub>O<sub>3</sub> coatings show excellent thermal insulation property. The formation mechanism of Hollow C/Fe<sub>2</sub>O<sub>3</sub> is also discussed along with the thermal insulation and electromagnetic wave absorption mechanism, which will enable the development and application of novel and lightweight stealth coatings.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Composite nanoarchitectonics of Fe2O3 loaded with hollow carbon loaded for enhanced radar stealth and thermal insulation performances

  • 期刊论文

  • 发表日期：

    2025年7月2日

查看全文
  • Zixuan Lei

摘要

Electromagnetic wave (EMW) absorption materials are widely used in electronic equipment and military fields. However, high cost and complex preparation processes become a major obstacle in promoting popularization in the civil field. To solve these problems, people have made great efforts to develop carbon-based magnetic composites. Hollow carbon loaded Fe2O3 nanocomposites assembled by liquid-phase electrostatic adsorption are presented as microwave absorber with thermal insulation properties. First successful integration of chemical liquid-phase deposition with plasma arc technology to construct uniform iron oxide coatings on hollow carbon spheres, overcoming typical nanoparticle aggregation issues. Compared with the previously typical composites materials, the present hollow carbon loaded Fe2O3 nanocomposite achieve the enhanced broadband EM absorption due to enhanced impedance matching and increased electric dipoles, which are related to the multiple interfaces between layers. The optimal 40 wt% Hollow C/Fe2O3 filled in paraffin shows a minimum reflection loss (RL) -53.64 dB with a thickness of 1.78 mm and 5.66 GHz (RL < -10 dB) absorbing bandwidth with thickness of 1.9 mm. Furthermore, Hollow C/Fe2O3 coatings show excellent thermal insulation property. The formation mechanism of Hollow C/Fe2O3 is also discussed along with the thermal insulation and electromagnetic wave absorption mechanism, which will enable the development and application of novel and lightweight stealth coatings.