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Preparation of phase-change microcapsules with illite as a filler and their applications in foaming materials

Published online by Cambridge University Press:  06 November 2023

Ming Li ,
Shuhua Zhang ,
Weijun Liu ,
Binyan Liu  and
Yu Wang
Ming Li
Affiliation:
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
Shuhua Zhang*
Affiliation:
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
Weijun Liu
Affiliation:
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
Binyan Liu
Affiliation:
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
Yu Wang
Affiliation:
College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China
*
Corresponding author: Shuhua Zhang; Email: zsh_7474@126.com
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Abstract

To solve the problem of the leakage of phase-change materials and expand the application of clay minerals in the field of phase-change materials, illite and paraffin wax were used for the first time as a new binary hybrid core material with silica as the wall material. Phase-change microcapsules were prepared using the sol–gel method and successfully applied in silicone rubber foams. Differential scanning calorimetry showed that the microcapsules had a melting temperature of 62.99°C and a latent heat capacity of 98.24 J g–1, indicating their good heat-storage capacity. Furthermore, the effectiveness of using illite as a filler for preventing paraffin leakage was demonstrated through 200 thermal cycling tests, which demonstrated a leakage rate of only 2.6% compared to 3.2% exhibited by microcapsules without illite.

Keywords

Clay mineralillitephase-change microcapsule
Type
Short Paper
Information
Clay Minerals , Volume 58 , Issue 4 , December 2023 , pp. 345 - 352
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of The Mineralogical Society of the United Kingdom and Ireland

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Footnotes

Associate Editor: Chun Hui Zhou

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