Investigation of PEG/mixed metal oxides as a new form-stable phase change material for thermoregulation and improved UV ageing resistance of bitumen

Su-hong, Zhu; Ji, Tao; Niu, Dongyu; Yang, Zhengxian

doi:10.1039/d0ra08398d

Cited by 24 publications

(13 citation statements)

References 54 publications

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“…[47] The dope of Ag could also make SSPCM acquire catalytic properties. [48] Zhu et al [49] employed ZnMgAl-mixed metal oxides (MMO) matrix to impregnate PEG, the PEG/MMO SSPCMs with a PEG content of 65 wt.% acquired excellent shape stability and sufficient phase change enthalpy. Besides, the SSPCM exhibits considerate temperature regulation and aging resistance to the UV light, exhibiting potential of SSPCM novel applications.…”

Section: Metal Derivativesmentioning

confidence: 99%

Fabrication of Organic Shape-stabilized Phase Change Material and Its Energy Storage Applications

Hu¹,

Wu²,

Liu³

et al. 2021

Eng. Sci.

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Organic phase change materials (OPCMs) are advanced energy storage materials with ability to storage and release thermal energy at constant temperature. Efficient energy storage systems using shape-stabilized PCMs (SSPCMs) are promising to adjust the gap between energy supply and demand. The performances of SSPCMs are influenced by multiple factors which are necessary to be considered in the fabrication process. In this regard, we summarized the desired properties for OPCMs and SSPCMs, then we systematically discussed the fabrication methods involving supporting materials, OPCMs and fillers. At last, we elaborated thermal storage applications of SSPCMs from three kinds of energy sources. This review intends to provide in-depth and constructive insights into the fabrication and energy storage applications of SSPCMs, thereby contributing to development and application of high-performance SSPCMs.

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Section: Metal Derivativesmentioning

confidence: 99%

Fabrication of Organic Shape-stabilized Phase Change Material and Its Energy Storage Applications

Hu¹,

Wu²,

Liu³

et al. 2021

Eng. Sci.

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“…These properties are detailed in Table A1 , demonstrating their necessary roles in various applications. Also, as shown in Table A1 , the most frequently employed materials as PCM are polyethylene glycols, or PEGs, notably PEG2000 and PEG4000, due to their significant enthalpies during phase changes [ 12 , 13 , 25 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 ]. These materials exhibit desirable attributes such as thermal and chemical stability, non-toxicity, and an appropriate phase change temperature range [ 44 ] during the phase change from solid.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is fundamental to investigate the thermal stability of PCM, which, in general, is performed using a thermogravimetric analyser. In addition, if the phase transition of the PCM in question is solid to liquid, it will probably be necessary to use a material that acts as a capsule or support for the PMC to prevent its leakage, which could even hurt the mechanical properties of the pavement [ 12 , 13 ]. In this case, the literature fundamentally presents two possibilities: (i) encapsulation (by melamine–formaldehyde resin [ 14 ], acrylic-based polymers [ 15 ], and CaCO 3 [ 16 ], among others) or (ii) impregnation using porous materials (silica fume [ 17 ], diatomite [ 18 ], expanded graphite, and others [ 19 ]) or crystalline/lamellar materials (expanded graphite [ 20 ], reduced graphene oxide [ 21 ], and montmorillonite [ 22 ] ( Figure 1 ).…”

Section: Introductionmentioning

confidence: 99%

Advancements in Phase Change Materials in Asphalt Pavements for Mitigation of Urban Heat Island Effect: Bibliometric Analysis and Systematic Review

Pinheiro,

Landi,

Lima

et al. 2023

Sensors

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This research presents a dual-pronged bibliometric and systematic review of the integration of phase change materials (PCMs) in asphalt pavements to counteract the urban heat island (UHI) effect. The bibliometric approach discerns the evolution of PCM-inclusion asphalt research, highlighting a marked rise in the number of publications between 2019 and 2022. Notably, Chang’an University in China has emerged as a leading contributor. The systematic review addresses key questions like optimal PCM types for UHI effect mitigation, strategies for PCM leakage prevention in asphalt, and effects on mechanical properties. The findings identify polyethylene glycols (PEGs), especially PEG2000 and PEG4000, as prevailing PCMs due to their wide phase-change temperature range and significant enthalpy during phase transitions. While including PCMs can modify asphalt’s mechanical attributes, such mixtures typically stay within performance norms. This review emphasises the potential of PCMs in urban heat management and the need for further research to achieve optimal thermal and mechanical balance.

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“…As shown in Figure 13, it is observed that the C=O stretching vibration peak of the Q1 transparent flame‐retardant hydrogel sample at 1638 cm −1 becomes stronger, which corresponds to the hydrolysis of the amide group during the aging process, resulting in the decrease of the transmittance of the fireproof glass. However, the C=O stretching vibration peak of the Q2‐Q5 transparent flame‐retardant hydrogel samples only increases slightly, indicating that the PAM/PEG interpenetrating network structure is not easy to degrade under the UV radiation, which can improve the anti‐aging property of fireproof glass 27 . In addition, the O–H bending vibration peak of the Q2‐Q5 transparent flame‐retardant hydrogel samples at 1465 cm −1 is also enhanced, indicating that the hydrogen bond association in the Q2‐Q5 samples is stronger.…”

Section: Resultsmentioning

confidence: 99%

Preparation of polyethylene glycol/polyacrylamide interpenetrating network hydrogel for simultaneously enhancing the fire protection and aging resistance of fireproof glass

Yi,

Zhou,

Yan

et al. 2023

J of Applied Polymer Sci

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To enhance the flame retardancy and aging resistance of grouting fireproof glass, different molecular weights of polyethylene glycol (PEG) were mixed with acrylamide (AM) to construct interpenetrating network hydrogels, then the obtained hydrogels were mixed with flame retardants to prepare a series of transparent flame‐retarded hydrogels applied in the fireproof glass. The effects of PAM/PEG hydrogel with varying PEG molecular weight on the optical transparency, heat insulation and aging resistance of fireproof glass were investigated. Optical transparency analysis shows that the light transmittance of grouting fireproof glass decreases with the increase of PEG molecular weight in the PAM/PEG interpenetrating network. Fire tests show that PAM/PEG hydrogel significantly enhances the heat insulation and aging resistance of the grouting fireproof glass compared to the single PAM network hydrogel. The flame‐retarded and anti‐aging effects of PAM/PEG hydrogel in the fireproof glass varies with the PEG molecular weight, and the order is PAM/PEG2000 > PAM/PEG1500 > PAM/PEG1000 > PAM/PEG800. Accelerated aging test shows that PAM/PEG interpenetrating network hydrogel is less affected by aging conditions and exerts durable heat insulation and transmittance. Especially, the backside temperature of 3600 s and transmittance of PAM/PEG2000 system after 264 h aging test only changed 38.3°C and 1.3%, respectively, compared to the unaged PAM/PEG2000 system.

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Investigation of PEG/mixed metal oxides as a new form-stable phase change material for thermoregulation and improved UV ageing resistance of bitumen

Abstract: As a new performance-enhancing additive, PEG/MMO PCM is expected to be effective in regulating extreme temperature and resisting UV aging of bitumen binder and thus could significantly extend the service life of bitumen pavement.

Cited by 24 publications

References 54 publications

Fabrication of Organic Shape-stabilized Phase Change Material and Its Energy Storage Applications

Fabrication of Organic Shape-stabilized Phase Change Material and Its Energy Storage Applications

Advancements in Phase Change Materials in Asphalt Pavements for Mitigation of Urban Heat Island Effect: Bibliometric Analysis and Systematic Review

Preparation of polyethylene glycol/polyacrylamide interpenetrating network hydrogel for simultaneously enhancing the fire protection and aging resistance of fireproof glass

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