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

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

doi:10.3390/polym14235161

Cited by 5 publications

(1 citation statement)

References 31 publications

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“…Additionally, PCMs for latent heat storage provide the benefits of sustainability and environmental preservation, enabling more intelligent use of energy [ 12 ]. Thus, PCMs are widely used in many applications, including the use of solar energy, energy-efficient construction, electronics heat management, waste-heat recovery, and more [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Novel PEG6000–Silica-MWCNTs Shape-Stabilized Composite Phase-Change Materials (ssCPCMs) for Thermal-Energy Storage

et al. 2023

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This paper describes the preparation of new PEG6000–silica-MWCNTs composites as shape-stabilized phase change materials (ssPCMs) for application in latent heat storage. An innovative method was employed to obtain the new organic–inorganic hybrid materials, in which both a part of the PEG chains, used as the phase change material, and a part of the hydroxyl functionalized multiwall carbon nanotubes (MWCNTs-OH), used as thermo-conductive fillers, were covalently connected by newly formed urethane bonds to the in-situ-generated silica matrix. The study’s main aim was to investigate the optimal amount of PEG6000 that can be added to the fixed sol–gel reaction mixture so that no leakage of PEG occurs after repeated heating–cooling cycles. The findings show that the optimum PEG6000/NCOTEOS molar ratio was 2/1 (~91.5% PEG6000), because both the connected and free PEG chains interacted strongly with the in-situ-generated silica matrix to form a shape-stabilized material while preserving high phase-transition enthalpies (~153 J/G). Morphological and structural findings obtained by SEM, X-ray and Raman techniques indicated a distribution of the silica component in the amorphous phase (~27% for the optimum composition) located among the crystalline lamellae built by the folded chains of the PEG component. This composite maintained good chemical stability after a 450-cycle thermal test and had a good storage efficiency (~84%).

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Section: Introductionmentioning

confidence: 99%

Novel PEG6000–Silica-MWCNTs Shape-Stabilized Composite Phase-Change Materials (ssCPCMs) for Thermal-Energy Storage

et al. 2023

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Anisotropic Rotunda‐Shaped Carboxymethylcellulose/Carbon Nanotube Aerogels Supported Phase Change Materials for Efficient Solar‐Thermal Energy Conversion

Zheng,

Pan,

Chai

et al. 2024

ChemSusChem

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For the drawbacks of phase change materials such as poor shape stability and weak solar‐thermal conversion ability, a rotunda‐shaped carboxymethylcellulose/carbon nanotube aerogel (CA) with three‐dimensional network was constructed by freeze casting with a special mold, and then impregnated with polyethylene glycol (PEG) in this work. The PEG/CA had an enthalpy of 183.21 J/g, and a thermal conductivity of 0.324 W•m‐1K‐1, which was 57% higher than the pure PEG. The ability of PEG/CA to convert solar energy to thermal energy was a positive correlation between the inclusion of CNTs and the composite material's thermal conductivity. Under simulated sunlight, its solar‐thermal conversion efficiency reaches 94.41%, and after 10 min of irradiation, the surface temperature can reach 65 ℃ and the internal temperature can reach 44.67 ℃. This rotunda‐shaped PEG/CA is promising for the efficient use of renewable solar energy due to its strong solar‐thermal conversion and thermal storage capabilities.

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Light/electro-thermal conversion of carbonized sweet potato 3D grid-supported PEG shape-stable phase change materials for thermal management applications

Zhang,

He,

et al. 2024

Chemical Engineering Research and Design

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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

Cited by 5 publications

References 31 publications

Novel PEG6000–Silica-MWCNTs Shape-Stabilized Composite Phase-Change Materials (ssCPCMs) for Thermal-Energy Storage

Novel PEG6000–Silica-MWCNTs Shape-Stabilized Composite Phase-Change Materials (ssCPCMs) for Thermal-Energy Storage

Anisotropic Rotunda‐Shaped Carboxymethylcellulose/Carbon Nanotube Aerogels Supported Phase Change Materials for Efficient Solar‐Thermal Energy Conversion

Light/electro-thermal conversion of carbonized sweet potato 3D grid-supported PEG shape-stable phase change materials for thermal management applications

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