脂肪酸相变材料的封装制备及热工性质

doi:10.11896/cldb.19070276

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Abstract This work aimed to solve the problem of mismatch between energy supply and demand in time, place and strength, as well as the shortages of single phase change materials. Composite phase change microcapsules (MPCMs) with LA-MA-PA-SA quaternary eutectic fatty acid as core material and melamine modified phenolic resin as shell material were prepared by in-situ polymerization. The MPCMs were characterized by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), Fourier transformed infrared spectroscopy (FT-IR) and thermogravimetric analysis (TG). The results showed that when the value of pH was between 8 and 9, the emulsifier was Span 60∶Tween 60=3∶7(mass ratio), the stirring speed in the process of encapsulation was 600 r/min, the core/shell mass ratio was 1.37∶1, the best MPCMs were obtained with smooth surface, uniform particle size distribution, higher covering rate, the phase change temperature and melting latent heat of 32.93 ℃ and 87.67 J/g respectively. There was only simple physical chimeric between core material and shell material of the MPCMs. After 50 times of cold and hot cycling, MPCMs had good heat storage thermal performance and good thermal stability.

Key words： eutectic fatty acid phenolic resin composite phase change microcapsules (composite MPCMS) phase change temperature melting latent heat

Published: 24 July 2020

CLC number:

TB34

Fund:This work was financially supported by the National Natural Science Foundation of China (51568056).

About author:: Yuanyuan Zhang, graduate student, graduated from Ningxia University in July 2018. She is currently studying structural engineering at the School of Civil and Hydraulic Engineering of Ningxia University, and mainly engages in the research of high performance materials, and has published 1 Chinese core paper.
Jiansen Yang, doctor, professor, who commitments to the teaching and research of civil engineering materials in the long-term, and carries out a series of research in the direction of concrete degradation model and durabi-lity design, cementitious material performance design and hydration control, high-performance cement-based materials and so on, presided over the completion of the 3 National Natural Science Foundation and won 5 provincial and ministerial level scientific and technological achievements awards

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Cite this article:

ZHANG Yuanyuan,YANG Jiansen. Packaging Preparation and Thermal Properties of Fatty Acid Phase Change Materials[J]. Materials Reports, 2020, 34(16): 16144-16148.

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http://www.mater-rep.com/EN/10.11896/cldb.19070276 OR http://www.mater-rep.com/EN/Y2020/V34/I16/16144

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