Journal
THERMOCHIMICA ACTA
Volume 578, Issue -, Pages 10-14Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2013.12.018
Keywords
Phase change material; Capsules; Thermal stability; Thermal capacity
Funding
- National Natural Science Foundation of China [51373119]
- China High-Tech R&D Program (863 Program) [2012AA03A602]
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A novel phase change material capsules with SiO2 in their surface was prepared by absorbing paraffin into PVC hollow capsules and by the polycondensation reaction of TEOS in different conditions. X-ray photoelectron spectroscopy (XPS) analysis and scanning electronic microscope (SEM) were used to determine chemical composition and microstructure of the composite capsules, respectively. Enthalpy capacity and thermal stability of the composite capsules are systematically characterized by using differential scanning calorimeter (DSC), thermogravimetric analyzer (TGA) and thermocycling tests. The composite has high heat capacity with good stability and absence of supercooling phenomena. (C) 2014 Elsevier B.V. All rights reserved.
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