Page 61 - 《精细化工》2022年第4期

第 39 卷第 4 期 精 细 化 工 Vol.39, No.4
2022 年 4 月 FINE CHEMICALS Apr. 2022

功能材料
RGO/ANFs 复合气凝胶的制备及电磁屏蔽性能

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谢 璠 ，高 坤 ，卓龙海 ，陈珊珊 ，
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贾峰峰 ，陆赵情 ，刘 成
（1. 陕西科技大学 轻工科学与工程学院 陕西省造纸技术及特种纸品开发重点实验室 轻化工程国家级实
验教学示范中心 中国轻工业纸基功能材料重点实验室 陕西省轻化工助剂化学与技术协同创新中心，陕西
西安 710021；2. 江苏澳盛复合材料科技有限公司，江苏 苏州 215200）
摘要：通过化学水热还原法制备了还原氧化石墨烯（RGO），将其引入到去质子化法制备的芳纶纳米纤维（ANFs）
基体中，采用冷冻干燥法制备了可压缩回弹、高效电磁屏蔽性能的 RGO/ANFs 复合气凝胶。采用 SEM、TEM、
四探针测试仪、伺服材料多功能高低温控制试验机和矢量网络分析仪考察了不同 RGO 添加量对 RGO/ANFs 复
合气凝胶的微观形貌、导电性能、力学性能和电磁屏蔽性能的影响。结果表明，当 RGO 添加量为 25%（以 ANFs
质量为基准，下同）时，制备的复合气凝胶的电导率达到 23.62 S/cm，总电磁屏蔽损耗达到 25.70 dB，压缩应
变为 0.7 时，压缩应力可达 100 kPa。RGO/ANFs 复合气凝胶自身的多孔结构与 RGO 良好的导电性能共同赋予
其优异的电磁屏蔽性能。
关键词：还原氧化石墨烯；芳纶纳米纤维；气凝胶；电磁屏蔽；压缩回弹性；功能材料
中图分类号：TS71+1；O648.17 文献标识码：A 文章编号：1003-5214 (2022) 04-0697-09

Preparation of RGO/ANFs composite aerogels and

their electromagnetic shielding performance

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XIE Fan , GAO Kun , ZHUO Longhai , CHEN Shanshan ,
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JIA Fengfeng , LU Zhaoqing , LIU Cheng
（1. College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Paper-Making
Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering
Education, Key Laboratory of Paper Based Functional Materials of China National Light Industry, Shaanxi Collaborative
Innovation Center of Industrial Auxiliary Chemistry and Technology, Shaanxi University of Science & Technology, Xi'an
710021, Shaanxi, China; 2. Jiangsu Aosheng Composite Materials Hi-Tech Co., Ltd., Suzhou 215200, Jiangsu, China）
Abstract: RGO/ANFs composite aerogels with compressible resilience and high electromagnetic shielding
performance were prepared by freeze-drying method by introducing reduced graphene oxide (RGO)
prepared by chemical hydrothermal reduction method into aramid nanofibers (ANFs) prepared by chemical
deprotonation method. The effects of different amounts of RGO on the microstructure, electrical
conductivity, mechanical properties and electromagnetic shielding performance of RGO/ANFs composite
aerogel were investigated by SEM, TEM, four-probe tester, servo material multifunctional high and low
temperature control testing machine and vector network analyzer. The results showed that when the additive
amount of RGO was 25% (based on the mass of ANFs, the same below), the electrical conductivity and
electromagnetic shielding efficiency of the prepared RGO/ANFs composite aerogel were 23.62 S/cm and
25.70 dB, respectively. The compressive stress at 0.7 compression strain could reach 100 kPa. RGO/ANFs
composite aerogel had excellent electromagnetic shielding performance due to its porous structure and good
electrical conductivity of RGO.

收稿日期：2021-09-04; 定用日期：2021-12-01; DOI: 10.13550/j.jxhg.20210891
基金项目：国家自然科学基金青年基金（52003145）；陕西省教育厅重点科学研究计划（21JY003）；陕西省重点研发计划
（2021ZDLGY14-05）
作者简介：谢 璠（1989—），女，副教授，E-mail：xiefan198903@163.com。联系人：陆赵情（1979—），男，教授，E-mail：
luzhaoqing@sust.edu.cn。