SEBS-based composite phase change material with thermal shape memory for thermal management applications

The employ of phase change materials (PCMs) provides a potential selection for thermal energy storage (TES) and thermal management (TM). The main reasons hinder the application are the low thermal conductivity, leakage and strong rigidity of PCMs. In this paper, a thermal shape memory composite phas...

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Bibliographic Details
Published in:Energy (Oxford) 2021-04, Vol.221, p.119900, Article 119900
Main Authors: Wu, Tingting, Hu, Yanxin, Rong, Huiqiang, Wang, Changhong
Format: Article
Language:English
Subjects:
Block copolymers
Composite materials
Composite phase change material
Convection
Energy storage
Free convection
Heat transfer
Heat transfer performance
Paraffin
Paraffins
Phase change materials
Rheological properties
Rigidity
Shape memory
Shape stability
Thermal conductivity
Thermal energy
Thermal management
Thermal shape memory
Thermal stability
Thermal stratification
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Summary:The employ of phase change materials (PCMs) provides a potential selection for thermal energy storage (TES) and thermal management (TM). The main reasons hinder the application are the low thermal conductivity, leakage and strong rigidity of PCMs. In this paper, a thermal shape memory composite phase change material composed of triblock copolymer (SEBS), paraffin (PA) and expanded graphite (EG) is prepared. The composite phase change materials are characterized by SEM, FTIR, DSC and TGA. The shape stability and thermal shape memory mechanism are studied in detail through rheological analysis. The results show that the prepared composite exhibit superior shape stability and thermal stability. Furthermore, the existence of SEBS can effectively suppress the effect of natural convection and improve the thermal stratification of the composite along the direction of gravity, and the composite material exhibited excellent thermal shape memory property. In addition, the existence of EG can enhance the heat transfer performance of the composite material. •SEBS-based CPCM with thermal shape memory is prepared.•The thermal shape memory mechanism is studied by rheological analysis.•The CPCM exhibit excellent thermal stability and shape stability.•Heat transfer performance of the CPCM has been visually studied.
ISSN:0360-5442
1873-6785
DOI:10.1016/j.energy.2021.119900