The epoxy-siloxane/Al composite coatings with low infrared emissivity for high temperature applications
The epoxy-siloxane/Al composite coatings with low infrared emissivity for high temperature applications
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DOI：
10.1016/j.apsusc.2009.12.053
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发表时间：
2010-03-15
影响因子：
6.7
通讯作者：
Yan, Xiaoxing
中科院分区：
文献类型：
--
作者：
Hu, Chen;Xu, Guoyue;Yan, Xiaoxing
以环氧硅氧烷为胶粘剂，铝为颜料，制备了具有良好耐热性的低红外发射率涂料。系统地研究了化学成分、表面结构、粗糙度和厚度对红外发射率的影响。详细的实验研究结果表明，固化后的复合涂层具有较低的发射率。由于红外吸收减少，形成均匀致密的焦炭结构，红外发射率明显降低。表面粗糙度和厚度都有一个临界值。太大的粗糙度或厚度不会有助于降低发射率。此外，还测试了复合涂层在空气中的热稳定性，以探讨高温环境对发射率的影响。结果表明，该复合涂层具有良好的热老化性能和抗热震性能，经热老化试验后仍具有较低的发射率。(C)2009年爱思唯尔B。V.保留所有权利。
Low infrared emissivity coatings with good thermal resistance were prepared by using epoxy-siloxane and aluminum as adhesive and pigment, respectively. The influence of chemical composition, surface texture, roughness and thickness on the infrared emissivity was systematically investigated. The detailed results of experimental investigation indicate that the cured composite coatings could possess low emissivity value. Due to reducing infrared absorption and forming uniform and compact char construction, the infrared emissivity decreases obviously. Both the surface roughness and thickness have a critical value, respectively. Too large roughness or thickness would not contribute to the decrease of the emissivity. Moreover, the composite coatings were tested for thermal stability in air to explore the effect of high-temperature environment on the emissivity. The results indicate that the composite coatings, still possessing low emissivity after the test, exhibit favorable thermal ageing and thermal shock resistance. (C) 2009 Elsevier B. V. All rights reserved.