Enhancement in thermal property and mechanical property of phase change microcapsule with modified carbon nanotube

Li, Min; Chen, Meirong; Wu, Zhishen

doi:10.1016/j.apenergy.2014.04.029

Cited by 116 publications

(43 citation statements)

References 17 publications

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“…The finned tube configuration [9][10][11][12], metal structure insertion into the PCMs [13,14], and dispersion of thermally conductive nano or micro particles (graphite flakes, CNTs, graphene, etc.) within the PCM matrix [15][16][17][18][19] are some of the widely studied approaches. Apart from being expensive, all these techniques suffer from certain drawbacks that include reduction in the latent heat of fusion [8], dampening of the natural convection process [19][20][21], and settling/floating of the additives in the liquid PCMs.…”

Section: Introductionmentioning

confidence: 99%

Macroencapsulation and characterization of phase change materials for latent heat thermal energy storage systems

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Macroencapsulation and characterization of phase change materials for latent heat thermal energy storage systems

et al. 2015

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“…The thermal conductivity improved by 21% (Al 2 O 3 ), 49% (CuO), and 59.38% (TiO 2 ) compared with pure paraffin microPCMs. Li et al prepared microPCMs with modified carbon nanotube (CNT) to build up thermal conductivity. However, the thermal conductivity of microPCMs was only 0.15 W m −1 K −1 at 4% content of CNT.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional phase change microcapsules based on graphene oxide Pickering emulsion for photothermal energy conversion and superhydrophobicity

Zhao

Yang

et al. 2020

Int J Energy Res

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Summary In order to enlarge the applications of microencapsulated phase change materials (microPCMs), the novel stearic acid (SA)@graphene oxide (GO)/melamine‐formaldehyde (MF) multifunctional superhydrophobic microPCMs were prepared with the method of condensation polymerization. We have made a systematical study of the effects of GO content on the SA@GO/MF microPCMs. The morphology and chemical composition characterizations showed the successful fabrication of microcapsules. The differential scanning calorimeter (DSC) identified that microPCMs could store latent heat energy. According to the contact angles (CA) measurement, the microPCMs displayed the water contact angle of 160.2°, which possessed the superhydrophobic property. Moreover, the self‐cleaning property of SA@GO/MF microPCMs was demonstrated by designing self‐cleaning experiment. The simulated irradiation experiment showed the good photothermal conversion performance of microPCMs. Owing to photothermal energy conversion performance and superhydrophobicity, multifunctional phase change microcapsules could have vital potentials in energy conversion and self‐cleaning.

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“…Thus, CNTs are beneficial for enhancing the heat‐transfer and mechanical performance of microPCMs. Li et al . found that the thermal conductivity of microPCMs/CNTs grafted with stearyl alcohol with 4% CNTs increased by 79% compared with microPCMs.…”

Section: Introductionmentioning

confidence: 99%

Improvements in the thermal conductivity and mechanical properties of phase‐change microcapsules with oxygen‐plasma‐modified multiwalled carbon nanotubes

Sun

Wang

Liu

et al. 2017

J of Applied Polymer Sci

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The thermal properties and mechanical properties are the key factors of phase‐change microcapsules (microPCMs) in energy‐storage applications. In this study, microPCMs based on an n‐octadecane (C18) core and a melamine–urea–formaldehyde (MUF) shell supplemented with O2‐plasma‐modified multiwalled carbon nanotubes (CNTs) were synthesized through in situ polymerization. Meanwhile, two different addition methods, the addition of modified CNTs into the emulsion system or into the polymer system, were compared and examined. Scanning electron microscopy micrographs showed that the microPCMs were spherical and had a broadened size distribution. Fourier transform infrared testing demonstrated that the modified CNTs did not affect C18 coated by MUF resin. The results indicate that the thermal conductivity and mechanical properties of the microPCMs were remarkably improved by the addition of a moderate amount of modified CNTs, but the heat enthalpy and encapsulated efficiency decreased slightly. Moreover, the thermal conductivity and mechanical properties of microPCMs modified with CNTs directly added to the polymer system were superior to those with CNTs added to emulsion system. In particular, when 0.2 g of modified CNTs were added to the polymer system, the thermal conductivity of the microPCMs was improved by 225%, and the breakage rates of the microPCMs at 4000 rpm for 5, 10, and 20 min decreased by 74, 72, and 60%, respectively, compared with that of the microPCMs without modified CNTs. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45269.

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Enhancement in thermal property and mechanical property of phase change microcapsule with modified carbon nanotube

Cited by 116 publications

References 17 publications

Macroencapsulation and characterization of phase change materials for latent heat thermal energy storage systems

Macroencapsulation and characterization of phase change materials for latent heat thermal energy storage systems

Multifunctional phase change microcapsules based on graphene oxide Pickering emulsion for photothermal energy conversion and superhydrophobicity

Improvements in the thermal conductivity and mechanical properties of phase‐change microcapsules with oxygen‐plasma‐modified multiwalled carbon nanotubes

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