|
|
|
|
|
|
| Preparation and Characterization of Reduced Graphene Oxide@LA-PA Composite Phase Change Material Prepared by Surfactant and Ultrasonic Dispersion |
| LIU Zili, LIN Jiawei, LUO Yang, REN Li, ZUO Jianliang
|
| School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006 |
|
|
|
|
Abstract Phase change material for energy conversion can effectively solve the problem of mismatch between time and space in energy supply and demand, which is a matter of great concern.Firstly, lauric acid-palmitic acid (LA-PA) eutectic mixture was prepared by melt blending method. And then, reduced graphene oxide @lauric acid-palmitic acid (RGO@LA-PA) composite phase change material was prepared by ultrasonic dispersion method.The structure and thermal performance of prepared RGO@LA-PA composite phase change material were characterized by FT-IR, Raman, SEM, DSC, thermal cycling test and morphology stability test. The results showed that the RGO and LA-PA eutectic mixture were combined in a physical way. The thermal conductivity and latent heats of RGO@LA-PA composite phase change material were improved 20% to 0.426 W·m-1·K-1 and 159.9 J·g-1 by adding 1wt% RGO, respectively. In thermal cycling test, the latent heats of RGO@LA-PA reduced 2% after 100 times thermal cycle, which indicated that the RGO could improve the thermal conductivity of the phase change material and eliminate the leakage phenomenon and the RGO@LA-PA had a good thermal reliability.
|
|
Published: 23 January 2019
|
|
|
|
|
1 Sharma R K, Ganesan P, Tyagi V V, et al. Developments in organic solid-liquid phase change materials and their applications in thermal energy storage[J].Energy Conversion and Management,2015,95:193.
2 Elefsiniotis A, Kokorakis N, Becker T, et al. A novel high-temperature aircraft-specific energy harvester using PCMs and state of the art TEGs[J].Materials Today Proceedings,2015,2(2):814.
3 Osterman E, Tyagi V V, Butala V, et al. Review of PCM based cooling technologies for buildings[J].Energy and Buildings,2012,49(2):37.
4 Falco M D, Capocelli M, Giannattasio A. Performance analysis of an innovative PCM-based device for cold storage in the civil air conditioning[J].Energy and Buildings,2016,122:1.
5 Aitlahbib F, Chehouani H. Numerical study of heat transfer inside a keeping warm system (KWS) incorporating phase change material[J].Applied Thermal Engineering,2015,75:73.
6 Zeng J L, Sun S L, Zhou L, et al. Preparation, morphology and thermal properties of microencapsulated palmitic acid phase change material with polyaniline shells[J].Journal of Thermal Analysis and Calorimetry,2017,129(15):1.
7 Shen Q, Ouyang J, Zhang Y, et al. Lauric acid/modified sepiolite composite as a form-stable phase change material for thermal energy storage[J].Applied Clay Science,2017,146:14.
8 Li Y, Yan H, Wang Q, et al. Structure and thermal properties of decanoic acid/expanded graphite composite phase change materials[J].Journal of Thermal Analysis and Calorimetry,2017,128(3):1.
9 Cabeza L F, Mehling H, Hiebler S, et al. Heat transfer enhancement in water when used as PCM in thermal energy storage[J].Applied Thermal Engineering,2002,22(10):1141.
10 Zhao C Y, Lu W, Tian Y. Heat transfer enhancement for thermal energy storage using metal foams embedded within phase change materials(PCMs)[J].Solar Energy,2010,84(8):1402.
11 Zhang T, Yu J Z. Heat transfer of channel type wheel heat exchan-ger under frosting condition[J].Journal of Refrigeration,2007,28(6):13(in Chinese).
张涛,余建祖.相变装置中填充泡沫金属的传热强化分析[J].制冷学报,2007,28(6):13.
12 Hasse C, Grenet M, Bontemps A, et al. Realization, test and mode-lling of honeycomb wallboards containing a phase change material[J].Energy and Building,2011,43(1):232.
13 Cao X R, Cui H T, Jiang J Z. Numerical simulation on heat transfer of phase change in heat storage ball filled with metal foam[J].Hebei Industrial Science and Technology,2011,28(1):1(in Chinese).
曹向茹,崔海亭,蒋精智.泡沫金属相变材料凝固传热过程的数值分析[J].河北工业科技,2011,28(1):1.
14 Sari A, Karaipekli A. Preparation, thermal properties and thermal reliability of palmitic acid/expanded graphite composite as form-stable PCM for thermal energy storage[J].Solar Energy Materials and Solar Cells,2009,93(5):571.
15 Zhang Z, Shi G, Wang S, et al. Thermal energy storage cement mortar containing n-octadecane/expanded graphite composite phase change material[J].Renewable Energy,2013,50(3):670.
16 Wang W, Yang X, Fang Y, et al. Preparation and thermal properties of polyethylene glycol/expanded graphite blends for energy sto-rage[J].Applied Energy,2009,86(9):1479.
17 Sari A, Karaipekli A. Preparation,thermal properties and thermal reliability of capric acid/expanded perlite compo-site for thermal energy storage[J].Materials Chemistry and Physics,2008,109(2-3):459.
18 Wang Y, Xia T D, Zheng H, et al. Stearic acid/silica fume compo-site as form-stable phase change material for thermal energy storage[J].Energy and Buildings,2011,43(9):2365.
19 Karaipekli A, Sari A. Capric-myristic acid/vermiculite composite as form-stable phase change material for thermal energy storage[J].Solar Energy,2009,83(3):323.
20 Chen S, Moore A L, Cai W, et al. Raman measurements of thermal transport in suspended monolayer graphene of variable sizes in va-cuum and gaseous environments[J].ACS Nano,2011,5(1):321.
21 Balandin A A, Ghosh S, Bao W, et al. Superior thermal conductivity of single-layer graphene[J].Nano Letters,2008,8(3):902.
22 Ferrari A C, Basko D M. Raman spectroscopy as a versatile tool for studying the properties of graphene[J].Nature Nanotechnology,2013,8(4):235.
23 Zhang N, Yuan Y, Du Y, et al. Preparation and properties of palmitic-stearic acid eutectic mixture/expanded graphite composite as phase change material for energy storage[J].Energy,2014,78:950.
24 Zhou J W, Cheng Y L, Wang C B, et al. Study on steric acid/graphene oxide composite phase-change material for thermal storage[J].New Chemical Material,2013,41(6):47(in Chinese).
周建伟,程玉良,王储备,等.硬脂酸/氧化石墨烯复合相变储热材料研究[J].化工新型材料,2013,41(6):47. |
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2018, Vol. 32 
