轻薄炭黑涂层的制备及其微波吸收性能研究

doi:10.11949/0438-1157.20190393

化工学报 ›› 2019, Vol. 70 ›› Issue (11): 4469-4477.DOI: 10.11949/0438-1157.20190393

• 材料化学工程与纳米技术 • 上一篇下一篇

轻薄炭黑涂层的制备及其微波吸收性能研究

汤进¹(),林斌²,毕松¹(),苏正安³,侯根良¹,刘朝辉¹,李浩¹,林阳阳¹

1. 火箭军工程大学304教研室，陕西西安 710025
2. 火箭军装备部驻武汉地区第一军事代表室，湖北武汉 430000
3. 西北农林科技大学水利与建筑工程学院，陕西西安 712100

收稿日期:2019-04-16 修回日期:2019-08-01 出版日期:2019-11-05 发布日期:2019-11-05
通讯作者: 毕松
作者简介:汤进（1992—），男，硕士研究生，1960336627@qq.com
基金资助:
国家自然科学基金项目(51502341)

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

Jin TANG¹(),Bin LIN²,Song BI¹(),Zheng an SU³,Genliang HOU¹,Chaohui LIU¹,Hao LI¹,Yangyang LIN¹

304. Teaching and Research Section, Rocket Force University of Engineering, Xi’an 710025, Shaanxi, China
2. First Military Representative Office of Rocket Force Equipment Department in Wuhan, Wuhan 430000, Hubei, China
3. College of Water Resources and Architectural Engineering, North West Agriculture and Forestry University, Xi’an 712100, Shaanxi, China

Received:2019-04-16 Revised:2019-08-01 Online:2019-11-05 Published:2019-11-05
Contact: Song BI

摘要/Abstract

摘要：

利用混合强酸对炭黑(CB)进行氧化处理，并以有机硅树脂为基体制备了CB涂层。通过扫描电子显微镜(SEM)、透射电子显微镜(TEM)、矢量网络分析(VNA)等方法对制备的4种不同填充量的涂层样品进行微观结构和电磁性能表征。微观结构分析表明：CB颗粒尺寸为纳米级，直径大小约为60 nm，氧化处理后的表面形态呈“褶皱”状；制备的CB涂层表面平整、厚度均匀，密度仅为1.1 g/cm3，兼具轻质柔性的特征。微波反射率测试结果显示，在8～18 GHz范围内，涂层样品均表现出了优异的微波吸收性能。当填充量为3.7%时，厚度仅为1.6 mm的涂层有效吸波频宽达到5.13 GHz，吸波强度为-26.5 dB；当填充量为2.3%时，厚度为1.9 mm的涂层有效吸波频宽达到最大值(5.44 GHz)，覆盖整个Ku波段，厚度为2.5 mm的涂层有效吸波频宽为4.44 GHz，覆盖整个X波段。

关键词: 氧化处理, 有机硅树脂, 炭黑涂层, 轻质柔性, 微波吸收性能

Abstract:

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.

Key words: oxidation treatment, silicone resin, CB coatings, lightweight and flexible, microwave absorption properties

中图分类号:

TB 332

汤进, 林斌, 毕松, 苏正安, 侯根良, 刘朝辉, 李浩, 林阳阳. 轻薄炭黑涂层的制备及其微波吸收性能研究[J]. 化工学报, 2019, 70(11): 4469-4477.

Jin TANG, Bin LIN, Song BI, Zheng an SU, Genliang HOU, Chaohui LIU, Hao LI, Yangyang LIN. Preparation and microwave absorption properties of light and thin carbon black coating[J]. CIESC Journal, 2019, 70(11): 4469-4477.

图/表 8

图1 CB涂层制备的实验流程

Fig.1 Experimental preparation process of CB coating

图2 炭黑粉末样品氧化处理前后的TEM图

Fig.2 TEM images of CB powder samples before and after oxidation treatment

图3 制备的CB涂层的SEM图和样品图

Fig.3 SEM and sample images of prepared CB coating

图4 改性前后制备的CB涂层的电导率

Fig.4 Conductivity of prepared CB coatings before and after modification

图5 改性前后制备的CB涂层的介电性能对比

Fig.5 Contrast of dielectric properties of prepared CB coatings before and after modification

图6 改性前后的CB涂层在不同厚度下的微波吸收性能对比

Fig.6 Contrast of absorption performance of CB coatings before and after modification with different thicknesses

图7 四种填充量下制备的CB涂层的微波吸收性能三维图

Fig.7 3D graphs of microwave absorption properties of prepared CB coatings within four filler loadings

图8 改性后制备的CB涂层的有效吸波频带变化趋势

Fig.8 Effective absorbing band variation trend of prepared CB coatings after modification

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轻薄炭黑涂层的制备及其微波吸收性能研究

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

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