Effect of Different Soft Segment Contents on the Energy Storage Capacity and Photo-Thermal Performance of Polyurethane-Based/Graphene Oxide Composite Solid-Solid Phase Change Materials

Jiawei Wang; Zihua Wu; Huaqing Xie; Tingting Wang; Yuanyuan Wang; Yueming Huang; Lan Dong

doi:10.3390/polym14235161

Effect of Different Soft Segment Contents on the Energy Storage Capacity and Photo-Thermal Performance of Polyurethane-Based/Graphene Oxide Composite Solid-Solid Phase Change Materials

Polymers (Basel). 2022 Nov 27;14(23):5161. doi: 10.3390/polym14235161.

Authors

Jiawei Wang¹, Zihua Wu^{1

2}, Huaqing Xie^{1

2}, Tingting Wang¹, Yuanyuan Wang^{1

2}, Yueming Huang¹, Lan Dong¹

Affiliations

¹ School of Energy and Materials, Shanghai Polytechnic University, Shanghai 201209, China.
² Shanghai Engineering Research Center of Advanced Thermal Functional Materials, Shanghai 201209, China.

Abstract

A series of polyurethane/graphene oxide (PU/GO) solid-solid phase change materials (SSPCMs) were synthesized by using GO as a light-absorbing filler and polyethylene glycol (PEG) as a phase change matrix. The effects of PEG content on the energy storage capacity, thermal stability and photo-thermal conversion performance of PU were investigated. The results show that the form-stability of PU/GO decreases while the phase change enthalpy and photo-thermal conversion efficiency of PU/GO increases with the increasing PEG content. The introduction of a very low content of GO can maintain comparable energy storage density and greatly improve light absorption by reasonably modulating the soft segment contents. The PU/GO composite with 92 wt% PEG has a phase change enthalpy of 138.12 J/g and a high photo-thermal conversion efficiency (87.6%). The composite solid-solid PCMs have great potential for effective energy storage and solar energy utilization.

Keywords: different soft segment content; energy storage capacity; photo–thermal conversion polyurethane; shape-stabilized.

Abstract

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