摘要
兼具超疏水和吸波性能的双功能涂层可应用于长寿命电磁吸收领域。采用低表面能的水性氟碳树脂为黏结剂,以全氟癸基三甲氧基硅烷(_(PFDT))为表面能改性剂,复配氟化石墨烯(FG),掺杂BaFe_(12)O_(19)、SrFe_(12)O_(19)、MXene 3种吸波材料,制备不同的超疏水吸波涂层(FG-Ba_(PFDT),FG-Sr_(PFDT),FG-M_(PFDT))。采用单因素法研究了不同吸波剂对疏水及吸波性能的影响。研究表明,当BaFe_(12)O_(19)、SrFe_(12)O_(19)、MXene的添加量分别超过12%,15%,15%时,涂层失去超疏水效果。制备吸波剂含量均为12%的三种涂层,矢量网络分析结果表明,FG-M_(PFDT)在15 GHz处最大反射损耗达-21.37 dB;FG-Ba_(PFDT)在2~18 GHz的有效吸波区域(RL<-10 dB)较其余两种更宽。研究为吸波、疏水双功能涂料的开发提供基本参考,为特种伪装涂料的应用提供基本遵循。
Bifunctional coatings with both superhydrophobic and wave-absorbing properties can be applied in the field of long-life electromagnetic absorption.The different superhydrophobic wave-absorbing coatings(FG-Ba_(PFDT),FG-Sr_(PFDT),FG-M_(PFDT))were prepared by using low surface energy aqueous fluorocarbon resin as the binder,perfluorodecyltrimethoxysilane(PFDT)as the surface energy modifier,and compounded with three kinds of wave-absorbing materials,namely,fluorinated graphene(FG),doped with BaFe_(12) O_(19),SrFe_(12) O_(19),and MXene.The effects of different wave absorbers on the hydrophobic and wave-absorbing properties were investigated using the one-factor method.It was shown that the coatings lost the superhydrophobic effect when the additions of BaFe_(12) O_(19),SrFe_(12) O_(19),and MXene exceeded 12%,15%,and 15%,respectively.The vector network analysis results of the three coatings prepared with 12%absorber content show that:the maximum reflection loss of FG-M_(PFDT) reaches-21.37 dB at 15 GHz;the effective absorption region(RL<-10 dB)of FG-Ba_(PFDT) is wider than that of the remaining two from 2 to 18 GHz.This study provides a basic reference for the development of wave-absorbing and hydrophobic bifunctional coatings and a basic guideline for the application of special camouflage coatings.
作者
凌旋
贾瑛
沈可可
黄远征
LING Xuan;JIA Ying;SHEN Keke;HUANG Yuanzheng(College of Missile Engineering,Rocket Force University of Engineering,Xi’an 710025,China)
出处
《应用化工》
北大核心
2025年第11期2804-2808,共5页
Applied Chemical Industry
基金
国家自然科学基金面上项目(52370186)。
关键词
超疏水
吸波性能
复合涂层
氟碳树脂
superhydrophobicity
wave-absorbing properties
composite coatings
fluorocarbon resins
