A novel bio-based polyurethane/wood powder composite as shape-stable phase change material with high relative enthalpy efficiency for solar thermal energy storage

Xiang Lu, Jintao Huang, Wai Yeung Wong (Corresponding Author), Jin ping Qu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)


A novel bio-based polyurethane (PU)/wood powder (WP) composite is prepared as a shape-stable phase change material (SSPCM) for solar thermal energy storage (TES) applications. Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), polarizing microscope (POM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and accelerated thermal cycling testing were performed to examine the chemical composition and structure, crystalline performances and thermal performances. The results indicate that, with only 3.0 wt% WP content, the PU/WP composites presented remarkable performance on phase change behaviors and thermal stability during PEG solid-liquid phase transition region. The maximum latent heat for PU/WP SSPCMs during melting and freezing process are 134.2 J/g and 132.4 J/g, respectively, and the relative enthalpy efficiency reaches 98.7%. At the same time, the obtained PU/WP SSPCMs exhibited reliable light-thermal conversion and temperature-regulated performance. Thus, the novel bio-based PU/WP SSPCMs displayed a high potential application as solar light absorber in the field of solar thermal energy storage and temperature regulation.

Original languageEnglish
Article number109987
JournalSolar Energy Materials and Solar Cells
Publication statusPublished - 15 Sep 2019


  • PEG
  • Solar thermal energy storage
  • SSPCMs
  • Wood powder

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

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