再生纤维素基三明治结构复合薄膜的电磁屏蔽性能

doi:10.11896/cldb.23100181

材料导报

2025, Vol. 39

Issue (2): 23100181-6 https://doi.org/10.11896/cldb.23100181

高分子与聚合物基复合材料

再生纤维素基三明治结构复合薄膜的电磁屏蔽性能

张婷^1,2, 吴翠玲^1,2, 籍冰晗^1,2, 韩梦瑶^1,2, 杜雪岩^1,2,*

1 兰州理工大学材料科学与工程学院,兰州 730050
2 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州 730050

Electromagnetic Interference Shielding Properties of Regenerated Cellulose Matrix Composite Films with Sandwich Structure

ZHANG Ting^1,2, WU Cuiling^1,2, JI Binghan^1,2, HAN Mengyao^1,2, DU Xueyan^1,2,*

1 School of Materials Science and Engineering,Lanzhou University of Technology, Lanzhou 730050, China
2 State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology,Lanzhou 730050, China

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摘要电磁辐射污染在工业、民用及军事等领域日趋严重,高性能的电磁干扰(Electromagnetic interference,EMI)屏蔽材料成为当前研究热点。以再生纤维素(Regenerated cellulose,RC)为基体,石墨烯(Graphene,GE)为导电填料,纳米Fe₃O₄为磁性填料,采用沉浸相转化法和压制成型法制备了三明治结构GE/RC-Fe₃O₄/RC-GE/RC复合薄膜。研究了GE含量和薄膜厚度对复合薄膜EMI屏蔽性能的影响,探讨了其屏蔽机制。结果表明,随着GE含量和薄膜厚度的增大,复合薄膜的电导率和EMI屏蔽性能逐渐提高。当GE含量为20%(质量分数,如无特殊说明,下同)、薄膜厚度为0.84 mm时,复合薄膜的EMI屏蔽效能(Shielding effectiveness,SE)达到24.7 dB。同时,GE的添加增强了复合薄膜的拉伸强度,其最大值为12.2 MPa。本研究为绿色纤维素基电磁屏蔽复合薄膜的构筑提供了借鉴。

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关键词: 再生纤维素三明治结构复合薄膜电磁屏蔽石墨烯纳米Fe₃O₄

Abstract: Electromagnetic radiation pollution has become increasingly serious in the electronic, industrial, civil and military fields. High-performance electromagnetic interference (EMI) shielding films have recently become popular research topics. In this work, the sandwich-structured graphene (GE)/regenerated cellulose (RC)-Fe₃O₄/RC-GE/RC composite films were fabricated by immersed phase transformation and compression molding methods using RC as matrix, GE as conductive filler and nano Fe₃O₄ as magnetic filler. The influence of GE contents and the thicknesses on the EMI shielding properties of the composite films were studied, and their shielding mechanism was discussed. The results showed that the conductivity and EMI shielding effectiveness (SE) were enhanced by both the increase of GE content and the film thickness. The EMI SE of the composite films reached the maximum 24.7 dB at the GE content of 20% and the film thickness of 0.84 mm. Meanwhile, the tensile strength of the composite film was enhanced by the addition of GE, with a maximum value of 12.2 MPa. This study provides a feasible strategy to prepare cellulose-based composite films for electromagnetic shielding.

Key words: regenerated cellulose sandwich-structured composite film electromagnetic interference shielding graphene nano Fe₃O₄

出版日期: 2025-01-25 发布日期: 2025-01-21

ZTFLH:

TB332

基金资助: 国家自然科学基金-联合基金项目(U22A20175)

通讯作者: ^*杜雪岩,博士,兰州理工大学材料科学与工程学院教授、博士研究生导师。目前主要从事冶金废渣综合利用、有机/无机复合功能材料等方面的研究工作。duxy@lut.edu.cn

作者简介: 张婷,硕士,现为兰州理工大学冶金固废综合利用团队的科研助理,在杜雪岩教授的指导下进行研究。目前主要研究领域为电磁屏蔽材料。

引用本文:

张婷, 吴翠玲, 籍冰晗, 韩梦瑶, 杜雪岩. 再生纤维素基三明治结构复合薄膜的电磁屏蔽性能[J]. 材料导报, 2025, 39(2): 23100181-6.
ZHANG Ting, WU Cuiling, JI Binghan, HAN Mengyao, DU Xueyan. Electromagnetic Interference Shielding Properties of Regenerated Cellulose Matrix Composite Films with Sandwich Structure. Materials Reports, 2025, 39(2): 23100181-6.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.23100181 或 https://www.mater-rep.com/CN/Y2025/V39/I2/23100181

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