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Shape‐Stabilized PCMs@Foam‐Based Porous Polymers for Thermal Energy Storage
Author(s) -
Liu Zhihong,
Wu Wei,
Liu Bo,
Wang Liang
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900781
Subject(s) - materials science , thermal stability , porosity , polymer , thermal energy storage , composite material , melting point , thermal , phase change material , chemical engineering , thermodynamics , physics , engineering
Hyper‐crosslinked polymers (HCPs) have drawn much attention due to their high surface areas, low skeleton density, thermal stability and chemical durability. Foam‐based hyper‐crosslinked polymers (HCfoam‐1 and HCfoam‐2) were synthesized by Friedel‐Crafts alkylation reaction and Scholl Coupling reaction. HCfoam‐1 and HCfoam‐2 exhibit high specific surface area (1098 m 2 g −1 and 1078 m 2 g −1 ) and permanent porosity. They both show well thermal stability. By using them as supporting materials, shape‐stabilized phase change materials (PCMs) composites were prepared. The composites show favorable encapsulation rate and phase enthalpies. For palmitic acid@HCfoam‐1 (PA@HCfoam‐1), its encapsulation rate reaches up to 77.6 wt%, the melting latent heat is 150.6 kJ Kg −1 . In addition, PCMs@HCfoams still remain stable without leakage above the melting point. All these indicate that the materials have broad prospects in thermal energy storage application.