Journal
MATERIALS
Volume 6, Issue 10, Pages 4758-4775Publisher
MDPI
DOI: 10.3390/ma6104758
Keywords
form-stable PCM; tetradecanol; eutectic mixtures; HDPE; EVA; building energy storage
Categories
Funding
- National Natural Science Foundation of China [51078257]
- Tianjin Natural Science Foundation [12JCYBJC14300]
- Program for New Century Excellent Talents in University [NCET-10-0617]
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This paper is focused on preparation and performance analysis of a series of form-stable phase change materials (FSPCMs), based on eutectic mixtures as phase change materials (PCMs) for thermal energy storage and high-density polyethylene (HDPE)-ethylene-vinyl acetate (EVA) polymer as supporting materials. The PCMs were eutectic mixtures of tetradecanol (TD)-capric acid (CA), TD-lauric acid (LA), and TD-myristic acid (MA), which were rarely explored before. Thermal properties of eutectic mixtures and FSPCMs were measured by differential scanning calorimeter (DSC). The onset melting/solidification temperatures of form-stable PCMs were 19.13 degrees C/13.32 degrees C (FS TD-CA PCM), 24.53 degrees C/24.92 degrees C (FS TD-LA PCM), and 33.15 degrees C/30.72 degrees C (FS TD-MA PCM), respectively, and latent heats were almost greater than 90 J/g. The surface morphologies and chemical stability of form-stable PCM were surveyed by scanning electron microscopy (SEM) and Fourier-transform infrared (FT-IR) spectroscopy, respectively. The thermal cycling test revealed that the thermal reliability of these three form-stable PCMs was good. Thermal storage/release experiment indicated melting/solidification time was shortened by introducing 10 wt % aluminum powder (AP). It is concluded that these FSPCMs can act as potential building thermal storage materials in terms of their satisfactory thermal properties.
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