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Open AccessArticle

Study of the Thermal Properties and the Fire Performance of Flame Retardant-Organic PCM in Bulk Form

1
Department of Materials Science & Physical Chemistry, Universitat de Barcelona, Martí i Franqués 1, 08028 Barcelona, Spain
2
Departament d’Enginyeria Mecanica, Universitat Rovira i Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain
3
Departament de Tecnologia de l’Arquitectura, Universitat Politècnica de Catalunya, Av. Dr. Marañon 44-50, 08028 Barcelona, Spain
4
GREA Innovació Concurrent, Universitat de Lleida, Edifici CREA, Pere de Cabrera s/n, 25001 Lleida, Spain
*
Author to whom correspondence should be addressed.
Materials 2018, 11(1), 117; https://doi.org/10.3390/ma11010117
Received: 27 October 2017 / Revised: 29 December 2017 / Accepted: 29 December 2017 / Published: 12 January 2018
(This article belongs to the Special Issue Recent Advances in Smart Materials for the Built Environment)
The implementation of organic phase change materials (PCMs) in several applications such as heating and cooling or building comfort is an important target in thermal energy storage (TES). However, one of the major drawbacks of organic PCMs implementation is flammability. The addition of flame retardants to PCMs or shape-stabilized PCMs is one of the approaches to address this problem and improve their final deployment in the building material sector. In this study, the most common organic PCM, Paraffin RT-21, and fatty acids mixtures of capric acid (CA), myristic acid (MA), and palmitic acid (PA) in bulk, were tested to improve their fire reaction. Several flame retardants, such as ammonium phosphate, melamine phosphate, hydromagnesite, magnesium hydroxide, and aluminum hydroxide, were tested. The properties of the improved PCM with flame retardants were characterized by thermogravimetric analyses (TGA), the dripping test, and differential scanning calorimetry (DSC). The results for the dripping test show that fire retardancy was considerably enhanced by the addition of hydromagnesite (50 wt %) and magnesium hydroxide (50 wt %) in fatty acids mixtures. This will help the final implementation of these enhanced PCMs in building sector. The influence of the addition of flame retardants on the melting enthalpy and temperatures of PCMs has been evaluated. View Full-Text
Keywords: phase change materials (PCMs); thermal energy storage (TES); flame retardants; dripping test; differential scanning calorimetry (DSC) phase change materials (PCMs); thermal energy storage (TES); flame retardants; dripping test; differential scanning calorimetry (DSC)
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Palacios, A.; De Gracia, A.; Haurie, L.; Cabeza, L.F.; Fernández, A.I.; Barreneche, C. Study of the Thermal Properties and the Fire Performance of Flame Retardant-Organic PCM in Bulk Form. Materials 2018, 11, 117.

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