自组装碳<strong>/</strong>环氧树脂复合吸波涂料的制备及性能

doi:10.11901/1005.3093.2023.103

材料研究学报

2023, Vol. 37

Issue (12): 952-960 DOI: 10.11901/1005.3093.2023.103

研究论文

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自组装碳/环氧树脂复合吸波涂料的制备及性能

徐文玉, 孙佳文, 朱曜峰(

)

浙江理工大学材料科学与工程学院杭州 310018

Preparation and Performance of Self-assembled Carbon/Epoxy Composite Microwave Absorbing Coating

XU Wenyu, SUN Jiawen, ZHU Yaofeng(

)

School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China

引用本文:

徐文玉, 孙佳文, 朱曜峰. 自组装碳/环氧树脂复合吸波涂料的制备及性能[J]. 材料研究学报, 2023, 37(12): 952-960.
Wenyu XU, Jiawen SUN, Yaofeng ZHU. Preparation and Performance of Self-assembled Carbon/Epoxy Composite Microwave Absorbing Coating[J]. Chinese Journal of Materials Research, 2023, 37(12): 952-960.

全文: PDF(8166 KB) HTML

摘要:

先用静电自组装-高温碳化法制备多界面自组装碳(CS@rGO)吸波剂，然后以环氧树脂(EP)为基体用物理混合法制备自组装碳/环氧树脂(CS@rGO/EP)复合功能涂料，表征其结构并研究了吸波性能和抗腐蚀性能。结果表明：这种涂料具有良好的吸波性能，吸波剂含量为20%、涂层厚度为1.1 mm的试样其最小反射损耗值为-25.03 dB；将试样在不同的介质溶液中浸渍30 d后在5%的NaCl和NaOH介质溶液中的附着力良好，其腐蚀速率较低(6.53×10^-6 mm·a^-1)和保护效率较高(92.86%)。

关键词 ：复合材料, 吸波材料, 静电自组装-高温碳化, 自组装碳/环氧树脂复合涂料, 防腐性能

Abstract：

Electromagnetic absorbing material is one of the key materials for the realization of equipment stealth protection. Moreover, electromagnetic absorbing materials with high electromagnetic absorption and corrosion resistance will play a key role in special marine environments. Herein, the CS@rGO/EP composite functional coating with excellent microwave absorbing performance and anti-corrosion properties is successfully fabricated through physical mixing method with CS@rGO as wave absorbing filler, and the epoxy resin (EP) as matrix. The structure and properties of the CS@rGO/EP composite functional coating were characterized. The results display that the CS@rGO/EP composite functional coating possess excellent microwave absorbing properties. When the CS@rGO absorber content is 20% and the coating thickness is 1.1mm, the minimum reflection loss value of the coating can reach -25.03 dB. Meanwhile, the coating can maintain well adhesion to the steel substrate after the coating/Q235 carbon steel plate has been immersed in 5%NaCl or NaOH solutions for 30 days, and electrochemical tests manifest that the corrosion rate of the coating/Q235 steel is as low as (6.53×10^-6 mm·a^-1), i.e. a high protection efficiency (92.86%). All in all, the good comprehensive performance of CS@rGO/EP composite functional coating shows its great application potential in special service environments.

Key words： composites absorbing materials electrostatic self-assembly-high temperature carbonization self-assembled carbon/epoxy composite coatings anti-corrosion properties

收稿日期: 2023-01-29

ZTFLH:

TB332

通讯作者: 朱曜峰，教授，yfzhu@zstu.edu.cn，研究方向为智能高分子材料

Corresponding author: ZHU Yaofeng, Tel: (0571)86843607, E-mail: yfzhu@zstu.edu.cn

作者简介: 徐文玉，女，1998年生，硕士生

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链接本文:

https://www.cjmr.org/CN/10.11901/1005.3093.2023.103 或 https://www.cjmr.org/CN/Y2023/V37/I12/952

图1 自组装碳/环氧树脂(CS@rGO/EP)复合功能涂料的制备流程

表1 涂层表面脱落的等级评价标准

图2 CS和CS@rGO的FESEM图、TEM照片、各试样表面的FESEM图、各试样截面的FESEM图以及试样的XRD谱和FT-IR谱

图3 CS@rGO/EP的吸波性能

图4 试样涂层附着力和耐介质性的测试效果

表2 不同涂层的耐介质性能

图5 涂层的防腐性能

表3 试样在溶液中浸泡21 d后的Tafel曲线拟合值

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