高强耐热型硫氧镁复合吸波涂层的设计与制备  

Design and preparation of high-strength heat-resistant magnesiumoxysulfide composite wave-absorbing coating

作　　者：栗志 郝万军[1] 王运鹏 陈乐 陈子龙 LI Zhi;HAO Wanjun;WANG Yunpeng;CHEN Le;CHEN Zilong(Key Laboratory of Advanced Materials for Tropical Island Resources of Hainan,Ministry of Education,School of Materials and Chemical Engineering,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学材料与化工学院,海南热带岛屿资源先进材料教育部重点实验室,海口570228

出　　处：《功能材料》2020年第10期10179-10184,共6页Journal of Functional Materials

基　　金：海南省重点资助项目(ZDYF2019119);海口市重点资助项目(2017018)。

摘　　要：热带海洋环境下对电磁辐射防护材料性能提出更高要求。本文采用高强耐热的硫氧镁材料与炭黑、羰基铁进行复合,设计制备出具有强度高、耐热好的电磁波吸收涂层,并采用弓形法对其在2~18 GHz频段的吸波性能进行测试。研究表明单独添加炭黑或羰基铁制备的硫氧镁单层吸波结构涂层吸收带宽窄,效果差。当以6%炭黑作为吸收层,2%炭黑与50%羰基铁混合作为匹配层制备双层吸波材料,并且控制匹配层及吸波层厚度均为1.5 mm时,吸波效果明显增强,有效吸收带宽为8.5 GHz,最大吸收量可达-28 dB,并且在2~18 GHz吸收量均大于-5 dB。Higher requirements are put forward for electromagnetic radiation protection materials in tropical marine environments.In this paper,high-strength heat-resistant magnesium oxysulfide material was combined with carbon black and carbonyl iron to design and prepare an electromagnetic wave absorption coating with high strength and good heat resistance.And its bow absorption performance in the 2-18 GHz frequency band was adopted by the bow methodcarry out testing.Studies have shown that the monolayer of magnesium oxysulfide prepared by adding carbon black or carbonyl iron alone had a narrow absorption bandwidth and poor effect.When 6%carbon black was used as the absorption layer,2%carbon black was mixed with 50%carbonyl iron as the matching layer to prepare a double-layer wave absorbing material,and the thickness of the matching layer and the wave absorbing layer were controlled to be 1.5 mm,the wave absorbing effect was obviously enhanced.The effective absorption bandwidth was 8.5 GHz,the maximum absorption could reach-28 dB,and the absorption was greater than-5 dB at 2-18 GHz.

关 键 词：硫氧镁材料 吸波 耐热 涂料 制备 

分 类 号：TB34[一般工业技术—材料科学与工程]