| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Liquid-solid Phase Change Cycling Performance of Zirconium Phosphate Suspensions with High Dispersion Stability |
| MO Songping1, ZHENG Lin1, YUAN Xiao1, LIN Xiaohui1, PAN Ting1, JIA Lisi1, CHEN Ying1, CHENG Zhengdong1,2
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1 Guangdong Provincial Key Laboratory on Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006
2 Artie McFerrin Department of Chemical Engineering, Texas A & M University, College Station, Texas 77843-3122, USA |
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Abstract Liquid-solid phase change cycling stability is as important as its freezing/melting performance for nanosuspensions as phase change mate-rials, because nanoparticles tend to aggregate and settle down. However, it has been rarely studied. In this study, zirconium phosphate (ZrP) nanosuspensions with high dispersion stability is proposed as a novel phase change material. Its freezing/melting performance and cycling stability were compared with water and graphene (GN) nanosuspensions. Results showed that the subcooling degree (SD) of all the samples decreased with increased freezing/melting cycle. At the same freezing/melting cycle, the SD of the ZrP and GN nanosuspensions were reduced compared with water. The nanosuspensions with higher nanoparticle concentration exhibited lower SD. The results suggested that both the ZrP and GN nanoplatelets and ice crystals could induce nucleation in the nanosuspensions. In comparison with the GN nanosuspensions, the SD of the ZrP nanosuspensions was higher at 0.1wt% but lower at 1.0wt% particle concentration. Dispersion stabilities of both nanosuspensions after freezing/melting cycles were then compared. Results showed that compared with the GN nanosuspensions, the ZrP nanosuspensions had higher dispersion stability, thus were able to reduce SD more effectively.
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Published: 03 April 2019
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51576050), Project of Guangdong Provincial Science and Technology Plan (2015A010106013) and Science and Technology Program of Guangzhou (201704030107, 2016201604030063). |
| About author:: Songping Mo received his B.E. degree and Ph.D. degree from University of Science and Technology of China. |
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2019, Vol. 33 
