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Preparation and Properties of Wall Coatings with Calcined Shell Powder as Fillers

1
Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2
Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(14), 2213; https://doi.org/10.3390/ma12142213
Received: 26 April 2019 / Revised: 3 July 2019 / Accepted: 8 July 2019 / Published: 10 July 2019
(This article belongs to the Section Construction and Building Materials)
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Abstract

Using as thermal reflection coating fillers is a significant recycle method for the largely available by-product of shell powders in aquaculture. However, the organics in the shell powder harm its reflection ability. To enhance the thermal reflection performance of the shell powder filled coatings, in this work, the calcined shell powders were used to fill coatings, and the performance of the coatings filled by the calcined shell powders under different temperatures was comparably investigated. Experimental results indicate that after calcination at 400 °C, the organics in the shell powders are removed, whereas the crystal structure of the calcium carbonate is maintained and its particles are refined, leading to an increase in its reflectance. Calcination at temperatures higher than 400 °C deteriorates the properties of the shell powder, due to the sintering of the calcium carbonate particles. The coatings filled by shell powder calcinated at 400 °C deliver the best cooling effect and comparable scouring resistance. View Full-Text
Keywords: shell powder; calcination; coating; reflectance shell powder; calcination; coating; reflectance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Chen, C.; Liu, Y.; Tang, Q.; Zhang, P.; Zhang, Y.; Sun, Z. Preparation and Properties of Wall Coatings with Calcined Shell Powder as Fillers. Materials 2019, 12, 2213.

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