摘要
随着信息化时代的快速发展,各种各样的电子产品也被广泛地应用到生活与工作中,伴随其而来的电磁污染也成为日益严重的问题,具有“薄、轻、宽、强”的吸波材料得到了广泛的关注。采用机械混合法将钡铁氧体(BaFe_(12)O_(19))、石墨烯(graphene)、二氧化硅(SiO_(2))进行混合,制备多元复合吸波剂,以水性聚氨酯为粘结剂,使用流延工艺制备多元复合吸收剂涂层织物,并分析其结构、形貌、机械以及吸波性能。结果表明,所制备的柔性吸波涂层织物在吸波剂配比为0.4(BaFe_(12)O_(19)-graphene)-0.6SiO_(2)、吸波涂层厚度为1.2 mm时,最小反射损耗达到-14.58 dB,有效吸波带宽为0.94 GHz(12.91~13.58 GHz),具备涂层薄、吸波强度高、吸收频带宽、质量轻的潜质。
With the rapid development of the information age,a variety of electronic products have been widely used in our daily and working life.The electromagnetic pollution has become an increasingly serious problem.Absorbing materials with“thin,light,wide,strong”have been widely concerned.In this paper,BaFe_(12)O_(19),graphene and SiO_(2) are mixed by mechanical mixing method to prepare multi-absorbent composite powders.Using waterborne polyurethane as binder,polyamide fabric with multi-absorbent composite coating is prepared by tape casting.The structure,morphology,mechanical and wave absorption properties of the flexible composites are analyzed.The results show that when the absorber component is 0.4(BaFe_(12)O_(19)-Graphene)-0.6SiO_(2) and the thickness of the absorbing coatings is 1.2 mm,the sample shows the best microwave absorption performance with the minimum reflection loss of-14.58 dB,and the bandwidth with reflection loss below-10 dB of 0.94 GHz(12.91-13.58 GHz).It has the excellent performance of thin coating,high absorption intensity,wide absorption band and light weight.
作者
刘杰
董子靖
宋佳敏
张昭环
陈敏
孙润军
LIU Jie;DONG Zijing;SONG Jiamin;ZHANG Zhaohuan;CHEN Min;SUN Runjun(School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, China;Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University),Ministry of Education, Xi'an 710048, China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第4期4155-4161,共7页
Journal of Functional Materials
基金
陕西省自然科学基础研究计划项目(2021JQ-691,2019JQ-182)
陕西省教育厅科研计划项目(20JK0652)。
关键词
钡铁氧体
石墨烯
二氧化硅
涂层
吸波性能
barium ferrite
graphene
silicon dioxide
coating
wave absorption performance
