Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 143, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2021.106291
Keywords
Foams; Energy materials; Elasticity; Thermal properties
Funding
- National Natural Science Foundation of China [51803172]
- Youth Science and Technology Innovation Team of Sichuan Province of Functional Polymer Composites [21CXTD0095]
- Key Research and Development Program of Sichuan Province [2019YFG0241]
- Opening Project of State Key Laboratory of Polymer Materials Engineering (Sichuan University) [sklpme2019-4-22]
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Novel PCM composites with good encapsulation property, superior solar-to-thermal conversion efficiency and shape memory function were fabricated by introducing MXene-coated melamine foam (MF@MXene) into poly(ethylene glycol) (PEG). The PCM composites exhibited remarkable shape fixation and recovery effects, providing long-time thermal comfort within a stable temperature range.
The liquid leakage, low light absorption capability and strong rigidity severely limit large-scale applications of phase change materials (PCMs). In this work, novel PCM composites with good encapsulation property, superior solar-to-thermal conversion efficiency and shape memory function were fabricated by introducing MXene-coated melamine foam (MF@MXene) into poly(ethylene glycol) (PEG). The MF@MXene/PEG composites showed satisfactory dimension retention ratio (90%) and phase change enthalpy (194.1 Jg(-1)). The three-dimensional MXene network constructed along the MF skeleton imparted the PCM composites with the ability to absorb and store the solar-energy as latent heat. Sunlight irradiation measurements suggested that the solar-thermal conversion efficiency reached 92.7%. Moreover, combining the resilience of MF@MXene sponge and the phase transition of PEG, the PCM composites exhibited remarkable shape fixation and recovery effects. A flexible heat eye-patch was further developed, which could be closely attached on human eyes and provided long-time thermal comfort within a stable temperature range.
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