Preparation and Characterization of Microencapsulated Phase Change Materials for Use in Building Applications

被引:38
作者
Giro-Paloma, Jessica [1 ]
Al-Shannaq, Refat [2 ]
Fernandez, Ana Ines [1 ]
Farid, Mohammed M. [2 ]
机构
[1] Univ Barcelona, Fac Chem, Dept Mat Sci & Met Engn, C Marti & Franques, Barcelona 108028 1, Spain
[2] Univ Auckland, Dept Chem & Mat Engn, Private Bag 92019,20 Symonds St, Auckland 1142, New Zealand
来源
MATERIALS | 2016年 / 9卷 / 01期
关键词
microencapsulated phase change material; volatile organic compounds; nano-indentation; differential scanning calorimetry; THERMAL-ENERGY STORAGE; CHANGE MATERIALS PCMS; CHANGE MATERIAL SLURRIES; VOC EMISSIONS; ELASTIC-MODULUS; SINK BEHAVIOR; INDENTATION; PERFORMANCE; INDOOR; FABRICATION;
D O I
10.3390/ma9010011
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A method for preparing and characterizing microencapsulated phase change materials (MPCM) was developed. A comparison with a commercial MPCM is also presented. Both MPCM contained paraffin wax as PCM with acrylic shell. The melting temperature of the PCM was around 21 degrees C, suitable for building applications. The M-2 (our laboratory made sample) and Micronal r DS 5008 X (BASF) samples were characterized using SEM, DSC, nano-indentation technique, and Gas Chromatography/Mass spectrometry (GC-MS). Both samples presented a 6 mu m average size and a spherical shape. Thermal energy storage (TES) capacities were 111.73 J.g(-1) and 99.3 J.g(-1) for M-2 and Micronal (R) DS 5008 X, respectively. Mechanical characterization of the samples was performed by nano-indentation technique in order to determine the elastic modulus (E), load at maximum displacement (P-m), and displacement at maximum load (h(m)), concluding that M-2 presented slightly better mechanical properties. Finally, an important parameter for considering use in buildings is the release of volatile organic compounds (VOC's). This characteristic was studied at 65 degrees C by CG-MS. Both samples showed VOC's emission after 10 min of heating, however peaks intensity of VOC's generated from M-2 microcapsules showed a lower concentration than Micronal (R) DS 5008 X.
引用
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页数:13
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