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Paraffin/methyl stearate/multi‐walled carbon nanotubes composite phase change materials with wide service temperature and high latent heat
Author(s) -
Wei Zhengkai,
Fu Xiaowei,
Wu Bo,
Jiang Liang,
Wang Yuechuan,
Yuan Anqian,
Xu Hualiang,
Lei Jingxin
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6693
Subject(s) - materials science , phase change material , latent heat , carbon nanotube , composite number , chemical engineering , thermal stability , atmospheric temperature range , thermal energy storage , phase (matter) , composite material , dispersion (optics) , thermal , thermodynamics , organic chemistry , chemistry , physics , engineering , optics
Summary The paraffin/methyl stearate/multi‐walled carbon nanotubes composite form‐stable phase change materials (FSPCMs) with a wide phase change temperature ( T pc ) range and high latent heat (Δ H ) and the subsequent phase change slurry (PCS) based on FSPCMs have been prepared via a direct impregnation method and via a simple dispersion method, respectively. The chemical structures, crystalline properties, surface microstructures, phase change properties, thermal reliability and stability of FSPCMs and the thermal storage and release performance were investigated. The FSPCMs had reversible melting/freezing phase change properties with a wider T pc range from 21.6°C to 55.3°C than that of pure methyl stearate (from 16.2°C to 32.5°C) and high Δ H of 127 J/g. The FSPCMs had good thermal reliability and stability. The PCS presented evident thermal storage and release performance compared to pure water. The FSPCMs and PCS enable huge potential applications in thermal fields depending on wide T pc range.