Preparation and microwave absorption properties of light and thin carbon black coating

被引：0

作者：

Tang J. ^{[1
]}

Lin B. ^{[2
]}

Bi S. ^{[1
]}

Su Z. ^{[3
]}

Hou G. ^{[1
]}

Liu C. ^{[1
]}

Li H. ^{[1
]}

Lin Y. ^{[1
]}

机构：

[1] 304 Teaching and Research Section, Rocket Force University of Engineering, Xi'an, 710025, Shaanxi

[2] First Military Representative Office of Rocket Force Equipment Department in Wuhan, Wuhan, 430000, Hubei

[3] College of Water Resources and Architectural Engineering, North West Agriculture and Forestry University, Xi'an, 712100, Shaanxi

来源：

Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 11期

关键词：

CB coatings; Lightweight and flexible; Microwave absorption properties; Oxidation treatment; Silicone resin;

D O I：

10.11949/0438-1157.20190393

中图分类号：

学科分类号：

摘要：

Carbon black (CB) was oxidized by using mixed acids, and CB coatings were prepared using silicone resin as the matrix. The microstructure and electromagnetic properties of the as-prepared coating samples with four different filler loadings were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and vector network analysis (VNA). Microstructural analyses show that the size of CB particles is nano-scale, the diameter is about 60 nm, and the surface morphology after oxidation treatment is pleated. The prepared CB coatings possess a flat surface and uniform thickness, and the density is only 1.1 g/cm3. The coatings have both the lightweight and flexible characteristics. The microwave reflectance test results indicate that the coating samples exhibit excellent microwave absorption properties in the range of 8 to 18 GHz. When the filler loading is 3.7%, the coating with a thickness of only 1.6 mm has an effective absorbing bandwidth of 5.13 GHz and the absorbing intensity of -26.5 dB. When the filler loading is 2.3%, the effective absorbing bandwidth of the coating (1.9 mm) reaches the maximum value (5.44 GHz) and covers the entire Ku band, the effective absorbing bandwidth of the coating (2.5 mm) is 4.44 GHz and covers the entire X-band. © All Right Reserved.

引用

页码：4469 / 4477

页数：8

共 30 条

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