Nacre biomimetic design-A possible approach to prepare low infrared emissivity composite coatings

被引：49

作者：

Zhang, Weigang ^{[1
]}

Xu, Guoyue ^{[1
]}

Ding, Ruya ^{[1
]}

Duan, Kaige ^{[1
]}

Qiao, Jialiang ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 211106, Jiangsu, Peoples R China

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2013年 / 33卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Nacre biomimetics; Composite coatings; Infrared emissivity; One-dimensional photonic structure; FABRICATION; FILMS;

D O I：

10.1016/j.msec.2012.08.012

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

Mimicking the highly organized brick-and-mortar structure of nacre, a kind of nacre-like organic-inorganic composite material of polyurethane (PU)/flaky bronze composite coatings with low infrared emissivity was successfully designed and prepared by using PU and flaky bronze powders as adhesives and pigments, respectively. The infrared emissivity and microstructure of the coatings were systematically investigated by infrared emissometer and scanning electron microscopy, respectively, and the cause of low infrared emissivity of the coatings was discussed by using the theories of one- dimensional photonic structure. The results show that the infrared emissivity of the nacre-like PU/flaky bronze composite coatings can be as low as 0.206 at the bronze content of 60 wt. %, and it is significantly lower than the value of PU/sphere bronze composite coatings. Microstructure observation illustrated that the nacre-like PU/flaky bronze composite coatings have similar one-dimensional photonic structural characteristics. The low infrared emissivity of PU/flaky bronze composite coatings is derived from the similar one-dimensional photonic structure in the coatings. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：99 / 102

页数：4

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