Melamine foam/reduced graphene oxide supported form-stable phase change materials with simultaneous shape memory property and light-to-thermal energy storage capability

Wu, Haiyan; Li, Song-tai; Shao, Yongbo; Jin, Xin-zheng; Qi, Xiao-dong; Yang, Jing‐hui; Zhou, Zuowan; Wang, Yong

doi:10.1016/j.cej.2019.122373

Cited by 231 publications

(62 citation statements)

References 46 publications

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“…As shown in Figure 2D, MF exhibits strong absorption peaks at 3388, 1557, 1157, and 813 cm À1 , belonging to N H (secondary amine) stretching, C═N stretching, C O stretching, and triazine ring bending, respectively. 33,34 Besides, the relatively strong C H stretching vibration is observed at 2957 cm À1 , and C OH stretching vibration is observed at 1008 cm À1 . The peaks at 1482 cm À1 are attributed to triazine rings.…”

Section: Fabrication Of Go-cs Intelligent Nano-coating On Mfmentioning

confidence: 97%

Graphene oxide/chitosan nano‐coating with ultrafast fire‐alarm response and flame‐retardant property

Yang

Yuan

Wang

et al. 2021

Polymers for Advanced Techs

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Using layer-by-layer self-assembly technology, an intelligent nano-coating was constructed on melamine foam (MF) by electrostatic interactions between chitosan (CS) molecules and graphene oxide (GO) nano-sheets. According to the principle that GO is quickly reduced to reduced GO under high temperature, a fast fire-warning network can be constructed. Due to the protective effect of nano-coating constructed on MF, the thermal stability and flame retardancy of melamine composite foams are improved. As the nano-coating self-assembly layer increases to 20, its flame-response time is only 3 s, and the continuous alarm time is as high as 1280 s.These indicate that the prepared GO-CS composite foam possesses excellent flame retardancy and super-fast fire response. This study provides a novel idea for the application of bio-based nano-coating in the fire early response and warning.

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Section: Fabrication Of Go-cs Intelligent Nano-coating On Mfmentioning

confidence: 97%

Graphene oxide/chitosan nano‐coating with ultrafast fire‐alarm response and flame‐retardant property

Yang

Yuan

Wang

et al. 2021

Polymers for Advanced Techs

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“…To solve the above problem, thermal energy storage technology is widely utilized to alleviate the mismatch between energy supply and demand to a certain extent, therefore improving the utilization rate of renewable energy (Lu et al, 2019a;Yang et al, 2019;Li et al, 2022). Solar energy may be one of the most abundant renewable energies to substitute for fossil fuels, which has attracted worldwide attention to heat energy sources for phase change materials (PCMs) (Xi et al, 2014;Zhou et al, 2018;Liu et al, 2020a;2020b;Wu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Functional Unit Construction for Heat Storage by Using Biomass-Based Composite

Weng

et al. 2022

Front. Chem.

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How to construct a functional unit for heat storage by using biomass materials is significant for the exploration of phase change materials (PCMs). In this work, we try to design and construct a functional unit for heat storage by employing a vacuum impregnation method to prepare sugarcane-based shape stabilized phase change materials (SSPCMs) for improving the thermal conductivity of phase change materials (PCMs) and preventing the liquid state leakage of PCMs. The morphologies of the prepared materials are characterized by Scanning electron microscope (SEM) as containing a unique channel structure which is viewed as the key factor for heat storage. X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA) were used to characterize the prepared materials. The results indicated that no chemical reaction occurred between PEG and sugarcane-based biomass during the preparation process and SSPCMs showed great thermal stability. Their thermal properties are measured by using the differential scanning calorimetry (DSC) characterization and show a high melting enthalpy of 140.04 J/g and 94.84% of the relative enthalpy efficiency, illustrating the excellent shape stabilized phase change behavior. Moreover, the highest thermal conductivity of SSPCMs is up to 0.297 W/(mK), which is 28.02% higher than that of the pristine PEG. The excellent capability for thermal energy storage is attributed to the directional thermal conduction skeletons and perfect open channels and the unique anisotropic three-dimensional structure of the SSPCMs. Hence, the unique structure with PEG is testified as the functional unit for heat storage. Comprehensively considering the excellent properties of sugarcane-based materials—providing cheap raw materials via green preparation—it is conceived that sugarcane-based materials could be applied in many energy-related devices with reasonable function unit design.

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“…For high latent heat, low cost and diversity, solid-liquid PCMs including salt hydrates, paraffin wax, fatty acids and poly(ethylene glycol) 8 have been intensively researched and mostly applied in the fields of building energy conservation, thermal management of electronic components and solar energy acquisition. 9,10 However, the application of these solid-liquid PCMs has been limited because of easy leakage during the solid-liquid phase change process. The poor phase change stability of solid-liquid PCMs can be solved through packaging before application, such as packaging methods based on microcapsules, 11,12 porous carrier composites 13 and electrostatic spinning.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous phase change energy storage and thermoresponsive shape memory properties of porous poly(vinyl alcohol)/phase change microcapsule composites

Shi

Liu

et al. 2021

Polymer International

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Porous poly(vinyl alcohol) (PVA)/phase change microcapsule composites with shape memory properties were prepared by physical foaming, cycles of freezing-thawing and freeze drying. The effects of phase change microcapsules on pore structure, phase change energy storage capacity, thermal stability, crystallinity, mechanical properties, shape memory properties and water absorption and retention of the porous composites were investigated. With an increase of the proportion of phase change microcapsules, the pore density, pore size and water absorption and retention of the porous composite materials were decreased, while the phase change energy storage performance was improved and ΔH m was up to 31.22 J g −1 . The phase change energy storage of the porous composites was stable even after 50 phase transition cycles. Meanwhile, the thermal stability of the porous composites was also not affected by the addition of phase change microcapsules. The entanglement of PVA molecular chains in the porous composites was affected by the microcapsules embedded in the matrix of PVA during freezingthawing cycles, resulting in a change of crystallinity and mechanical properties of the porous composites. The porous composites with phase change energy storage capacity also showed good shape memory performance with shape recovery rate of 100% even after multiple deformation, which was expected to expand the multi-field application of dual-functional materials.

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Melamine foam/reduced graphene oxide supported form-stable phase change materials with simultaneous shape memory property and light-to-thermal energy storage capability

Cited by 231 publications

References 46 publications

Graphene oxide/chitosan nano‐coating with ultrafast fire‐alarm response and flame‐retardant property

Graphene oxide/chitosan nano‐coating with ultrafast fire‐alarm response and flame‐retardant property

Functional Unit Construction for Heat Storage by Using Biomass-Based Composite

Simultaneous phase change energy storage and thermoresponsive shape memory properties of porous poly(vinyl alcohol)/phase change microcapsule composites

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