殷宗莲,周学梅,王俊芳.吸波涂层失效因素研究[J].表面技术,2015,44(7):76-80,102.
YIN Zong-lian,ZHOU Xue-mei,WANG Jun-fang.Study on Factors Leading to Failure of Electromagnetic Wave Absorbing Coatings[J].Surface Technology,2015,44(7):76-80,102 |
| 吸波涂层失效因素研究 |
| Study on Factors Leading to Failure of Electromagnetic Wave Absorbing Coatings |
| 投稿时间：2015-03-24 修订日期：2015-07-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2015.07.014 |
| 中文关键词: 吸波涂层 失效 人工加速试验 失效因素 失效体系 |
| 英文关键词:absorbing coating failure accelerated aging experiment failure factors failure system |
| 基金项目: |
| 作者 | 单位 |
| 殷宗莲 | 西南技术工程研究所, 重庆 400039 |
| 周学梅 | 西南技术工程研究所, 重庆 400039 |
| 王俊芳 | 西南技术工程研究所, 重庆 400039 |
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| Author | Institution |
| YIN Zong-lian | Southwest Technology and Engineering Research Institute, Chongqing 400039, China |
| ZHOU Xue-mei | Southwest Technology and Engineering Research Institute, Chongqing 400039, China |
| WANG Jun-fang | Southwest Technology and Engineering Research Institute, Chongqing 400039, China |
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| 中文摘要: |
| 目的 研究吸波涂层因物理和化学损伤而导致的失效原因,用于评估吸波涂层的寿命,指导吸波涂层的功能结构优化,提高吸波涂层的使用寿命。 方法 通过高低温振动双结合、加速人工老化试验等方法和分析涂层失效前后的微观形貌、组成元素,对导致吸波涂层失效的多种因素进行试验验证。 结果 在固化阶段和高低温振动条件下,涂层因内应力变化导致开裂脱落;在紫外线照射和盐雾作用下,涂层因氧化和盐雾渗透导致粉化、鼓泡。 结论 建立了吸波涂层失效体系及失效因子,得到影响涂层实效的因素主要为:涂层厚度、附着力、致密度、有机成膜物功能键特性、吸收剂氧化活性等。 在吸波涂层设计中,应采用低交联度树脂,降低因固化反应带来的内应力增加;通过减薄增韧,提高涂层的耐高低温交变和振动性能;通过设计耐腐蚀屏蔽层和在表面涂覆高耐侯保护层,提高吸波涂层在大气和介质腐蚀下的使用寿命。 |
| 英文摘要: |
| Objective To study reasons of failure of absorbing coatings caused by physical and chemical damages so as to evaluate and improve the lifetime and guide the functional optimization of absorbing coatings. Methods A series of tests such as high-low temperature vibration and accelerated aging test, micro-topography of coatings before and after damage, and elementary analysis were taken to confirm the factors leading to failure in absorbing performance. Results During the solidification and high-low temperature vibration test, the performance failure was due to cracking and pealing caused by the change of internal stress. Exposed to UV and salt fog, the performance failure was due to pulverization and bubbling caused by coating oxidation and permeation of salt and fog. Conclusion According to the experiment results, the absorbing coating failure system and factors were established. The major factors that influenced the performance of coatings included coating thickness, adhesive force, density, functional groups of organic film forming substance and oxidative activity of absorbents. During the design of absorbing coatings, resin of low crosslinking degree should be used to reduce internal stress caused by solidification. Tolerance of high-low temperature shift and vibration can be enhanced by decreasing thickness and increasing toughness. The lifetime of coatings under atmospheric and medium corrosive condition was prolonged by introduction of corrosion resisting shielding layer and high weatherability protection layer. |
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