Materials Reports  2021, Vol. 35 Issue (z2): 483-487 |
| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| Study on the Performance of Organic Base Binary Stereotyped Composite Phase Change Material Supported by Mesoporous SiO2 |
| LI Jie1, ZHANG Jia2, FU Mingqin1, XU Liqiang1, HU Qizhi1,3, LI Xiaopeng1, YU Cui1
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1 School of Urban Construction, Wuchang Institute of Technology, Wuhan 430065, China
2 School of Biological Engineering and Food Science, Hubei University of Technology,Wuhan 430068, China
3 School of Civil Engineering, Architecture and Environment, Hubei University of Technology,Wuhan 430068, China |
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Abstract Energy is the basis for human survival, demand for energy is increasing day by day with the growth of population and the improvement of productivity. At present, most of the energy used by human beings is non-renewable, the energy problem has gradually emerged in human society, and become the primary problem of human development in the future. Therefore, in order to improve the utilization rate of new and old energy, to reduce the heat loss of energy in the release of energy, the method of energy conservation has gradually been studied right now, and the material used in this method of energy conservation, namely, energy storage materials. In this study, in order to explore a phase change energy storage material with better performance, binary organic acid composite material was selected as the phase change core material, capric acid/stearic acid (CA-SA), and the phase change core material was enwrapped using sol-gel method. Among them, CA-SA was coated with mesoporous silica. Mesoporous silica spheres was obtained with with different morphology and structure using tetraethyl orthosilicate (TEOS)was used as raw material, cetyltrimethylammonium bromide (CTAB) was used as template agent according to different ratios. And then, mesoporous silica was used as the carrier and CA-SA was used as the phase change core material. The stereotyped CA-SA composite materials supported by mesoporous silica was formed through nterfacial action and capillary action with mesoporous silica carrier and phase change core material CA-SA. At the same time, the effects of mesoporous silica with different pore structures and different mass ratios of CA-SA on the energy storage performance of PCM composites were investigated. The stereotyped composite phase change energy storage materials with loading capacity of 60% were obtained through supported by he mesoporous SiO2 to binary organic acid CA-SA composites.The results of thermal property analysis was showed that the composite had a large latent heat of phase transition, a suitable temperature of phase transition, and excellent thermal stability at the suitable temperature. At the same time, the results were clearly show that mesoporous silica had little effect on the thermal properties and stability of the composite phase change materia-ls, and to a certain extent, it was realized the effective encapsulation of the composite phase change energy storage materials as a carrier. Howe-ver, the mass ratio of organic acids had a great influence on the thermal properties and stability of the supported phase change materials. Finally, the study was further showed that the material could still show wonderful thermal stability after 50 cycles of thermal tests. The mesoporous material supported organic matrix binary composite phase change energy storage materials can provide a good theoretical basis for the research and development of other new phase change energy storage materials with excellent performance and better energy storage effect, and was expected to become a new practical material in special application fields.
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Published: 09 December 2021
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| Fund:This work was financially supported by Excellent Young and Middle-aged Research and Innovation Team of Higher Education Institutions of Hubei Province (2018T02), Student Scientific Research Project of Wuchang Institute of Technology (2019XSZ02). |
| About author:: Jie Li received her Ph.D. degree in materials science and engineering from the Wuhan University of Technology in July 2016. She was appointed to the associate professor of the Wuchang Institute of Technology during the same year. She has published more than 20 journal papers as the first author. Her research interests focus on the development of new inorganic non-metallic materia-ls, and the fundamental theory & application about the organic-inorganic hollow micro mesoporous nano-hybrid materials and high performance building phase change energy storage materia. She presided over Youth Project of Natural Science Foundation of Hubei Provi-nce, Doctoral Research Initiation Fund Project of Wuchang Institute of Technology and university-enterprise cooperation projects, etc. |
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