Open AccessFabrication of thermal energy storage wood composite based on shape-stable phase change material
Author(s) -
Jingyi Liu,
Shifang Jia,
Xianxian Lin,
Huimin Cao,
Wenbin Wang,
Guo Xi,
Wei Sun
Publication year - 2021
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ac0012
Subject(s) - materials science , differential scanning calorimetry , thermogravimetric analysis , composite material , fourier transform infrared spectroscopy , thermal stability , polyethylene glycol , phase change material , scanning electron microscope , chemical engineering , thermal , physics , meteorology , engineering , thermodynamics
In this work, a novel phase change energy storage wood (PCESW) was fabricated by impregnating solid-solid phase change materials (SSPCM) into delignified wood. The SSPCM was prepared by using polyethylene glycol (PEG) 1500 as the thermal energy storage ingredient, hexamethylene diisocyanate (HDI) as the cross-linking agent and castor oil (CO) as the skeleton material. The chemical composition and structure of SSPCM and PCESW were confirmed by fourier transform infrared spectroscopy (FTIR); the crystalline structure of PEG and SSPCM were tested by x-ray diffraction (XRD); the microstructure of PCESW was observed by scanning electron microscopy (SEM); thermal properties and durability of SSPCM and PCESW were investigated by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The results showed that: (1) the porosity of wood was improved obviously after delignification and SSPCM mainly distributed in wood vessels; (2) PCESW-15 exhibited superior temperature-regulating performance and thermal stability; (3) PCESW-15 presented outstanding shape stability and no liquid leakage occurred during the phase transition. The great thermal performance of PCESWs suggested that it can be used as energy-saving building materials for indoor temperature regulating.