Abstract
An experimental study is presented examining the preparation and characterization of a smart gypsum composite board for thermal comfort building application. Composite boards were prepared by mixing 1–30% by weight nano-encapsulated -octadecane phase change material (PCM) with gypsum to develop gypsum-based building materials with thermal energy storage (TES) capability. The nanocapsules were prepared by encapsulating -octadecane in nano-sized styrene-methyl–methacrylate copolymer shells using one-step mini-emulsion in situ polymerization. A thermal performance testing device was designed to evaluate the heat storage effect of the resulting gypsum composite. The results indicated that composite boards containing -octadecane nanocapsules effectively decreased the temperature peak of the experimental test room compared with gypsum board without -octadecane nanocapsules. This suggested that the composite boards had good thermal energy storage properties. It was also demonstrated that the composite boards containing -octadecane nanocapsules could be used as a smart heat storage medium for thermal comfort building application. From the thermal properties point of view, incorporating 10% by weight -octadecane nanocapsules in gypsum was more beneficial than adding more than 10% by weight.
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Acknowledgments
This work was supported by the Ministry of Higher Education of Malaysia (MOHE) under grant No. FRGS/1/11/SG/UPM/01/2. The JPA scholarship for Doctoral Programs (T.K.) is gratefully acknowledged.
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 3 • March 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Dec 22, 2014
Accepted: Jun 15, 2015
Published online: Sep 1, 2015
Discussion open until: Feb 1, 2016
Published in print: Mar 1, 2016
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