Paper
6 August 2023 Preparation and characterization of nano-TiO2/paraffin-based composite phase change microcapsules
Yunfeng Zhang, Zewei Chen, Lu Zhang, Jie Zhang, Wei Zhong
Author Affiliations +
Proceedings Volume 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023); 127813L (2023) https://doi.org/10.1117/12.2686707
Event: 2023 International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 2023, Guangzhou, JS, China
Abstract
A novel phase change microcapsule with paraffin wax as the core material and nano-TiO2 modified polysulfone resin(PSF)as the shell material was developed based on the solvent volatilization method. The composite microcapsules were characterized by Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), Differential Scanning Calorimeter (DSC) and Thermogravimetric Analysis (TGA) to test the comprehensive performance of the composite microcapsules. The results showed that the overall performance of the microcapsules was the best when the nano-TiO2 was added at 3%, with the average particle size of 103.83 μm reaching the minimum, the melting enthalpy of 104.50 J/g, the crystallization enthalpy of 104.00 J/g, and the encapsulation efficiency of 68.54%; The chemical structure of the composite phase change microcapsules was not affected after adding a certain amount of nano-TiO2, and the surface of the microcapsules was smoother, which increased the continuity of the microcapsules. The thermal stability and thermal properties of microcapsules were also significantly improved.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yunfeng Zhang, Zewei Chen, Lu Zhang, Jie Zhang, and Wei Zhong "Preparation and characterization of nano-TiO2/paraffin-based composite phase change microcapsules", Proc. SPIE 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 127813L (6 August 2023); https://doi.org/10.1117/12.2686707
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KEYWORDS
Composites

Thermal stability

Materials properties

Scanning electron microscopy

Chemical analysis

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