PREPARATION AND THERMAL PROPERTIES OF HYBRID SHELL PHASE CHANGE MICROCAPSULES

Wang Ziqing; Luan Jingde

doi:10.19912/j.0254-0096.tynxb.2022-0743

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (9) : 527-531. DOI: 10.19912/j.0254-0096.tynxb.2022-0743

PREPARATION AND THERMAL PROPERTIES OF HYBRID SHELL PHASE CHANGE MICROCAPSULES

Wang Ziqing, Luan Jingde

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Abstract

In-situ polymerization was adopted to prepare a structure-stable and leakproof phase change microcapsule, which was composed of paraffin as heat storage core material,titanium dioxide and chitosan as shell and graphene nanoplatelets（GNP） as thermal conductive filler. SEM、FTIR、TGA、DSC and thermal conductivity tester were used to investigate the effect of different core-shell ratio and GNP filling amount on the microstructure, surface functional groups, thermal stability, phase transformation and thermal conductivity of microcapsules. The results indicated that microcapsules have a compact structure and good leakage resistance. The maximum phase change latent heat of the microcapsules is 134.78 J/g, and the corresponding coating rate is 75.51%. The thermal conductivity of microcapsules increased by 261.5% due to the introduce of GNP.

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nanomaterials / titanium dioxide / phase change heat storage / renewable energy / thermal properties

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Wang Ziqing, Luan Jingde. PREPARATION AND THERMAL PROPERTIES OF HYBRID SHELL PHASE CHANGE MICROCAPSULES[J]. Acta Energiae Solaris Sinica. 2023, 44(9): 527-531 https://doi.org/10.19912/j.0254-0096.tynxb.2022-0743

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