Thermal Properties of Surface-Modified and Cross-Linked Boron Nitride/Polyethylene Glycol Composite as Phase Change Material

Wie, Jaehyun; Kim, Jooheon

doi:10.3390/polym13030456

Cited by 35 publications

(9 citation statements)

References 32 publications

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“…To increase the interfacial adhesion, Wie et al [91] exploited the PVA to load on the surface of BN, then the BN/PVA composite was drived to absorb PEG which would react with PVA to assist heat conduction. As a result, the mobility of PEG chains was limited leading to a reduction of latent heat.…”

Section: Others Boron Nitride (Bn)mentioning

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: Others Boron Nitride (Bn)mentioning

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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“…In addition to all these features, their lightness also gives polymer composite materials superiority in many areas. For these reasons, polymer composite-based materials have been the focus point of scientific interest and active multidisciplinary and industrial research groups because of their interesting properties and potential [ 20 , 21 , 22 ]. In addition, many explorers have remarkably conducted polymer composite-based radiation-absorbing substances [ 23 , 24 , 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Gamma Irradiation and the Radiation Shielding Characteristics: For the Lead Oxide Doped the Crosslinked Polystyrene-b-Polyethyleneglycol Block Copolymers and the Polystyrene-b-Polyethyleneglycol-Boron Nitride Nanocomposites

et al. 2021

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This work aimed to research the efficiency of gamma irradiation and shielding characteristics on the lead oxide (PbO) doped the crosslinked polystyrene-b-polyethyleneglycol (PS-b-PEG) block copolymers and polystyrene-b-polyethyleneglycol-boron nitride (PS-b-PEG-BN) nanocomposites materials. The crosslinked PS-b-PEG block copolymers and PS-b-PEG-BN nanocomposites mixed with different percentage rates of PbO were used to research gamma-ray shielding characteristics. The synthesis of the copolymer was done by emulsion polymerization methods. The characterization and morphological analyses of irradiated samples were explored handling with the Nuclear Magnetic Resonance (NMR), Fourier Transform Infrared Spectroscopy (FTIR), Gel Permeation Chromatography (GPC), Thermogravimetric Analysis (TGA), and Scanning Electron Microscope (SEM) methods. The gamma-rays that were emitted from the E 152u source were observed with a High Purity Germanium (HPGe) detector system and examined with a GammaVision computer program. Our samples, including the different percentage rates of the PS-b-PEG (1000, 1500, 10,000), BN, and PbO, were irradiated in various gamma-ray photon energy regions (from 121.78 keV to 1408.01 keV). Then, Linear-Mass Attenuation Coefficients (LACs-MACs), Half-Tenth Value Layer (HVL), Mean Free Path (MFP), and Radiation Protection Efficiency (RPE) values of the samples were calculated. Via crosschecking the acquired data from samples with and without PbO and BN, it was observed that, if the different percentage rates by weight nano-powder of PbO and BN are added in the polymer mixture, it can be used as a convenient shielding material against gamma rays.

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“…The initial decomposition temperature of PVA is approximately 245 °C, and most of the thermal degradation and physicochemical reactions of PVA occur between 245 and 550 °C. , At 700 °C, compared to H-PVA, the rGO contents of H-rGO/PVA-3, H-rGO/PVA-4, and H-rGO/PVA-5 are roughly calculated as 10.7, 13.7, and 26.3%, respectively. Compared with other recently reported polymer-based composites, such as PVA, carbon nitride nanosheets (CNNS)/PVA, surface-modified graphene (SMG)/poly(vinylidene fluoride) (PVDF), graphene nanoplatelets (GNPs)/PVA, rGO/PVA, BN/PVA, and BN/PEG/PVA, the in-plane thermal conductivity of the H-rGO/PVA films in this study have clear advantages (Figure e). The relevant data are summarized in Table .…”

Section: Resultsmentioning

confidence: 99%

Electrospraying Graphene Nanosheets on Polyvinyl Alcohol Nanofibers for Efficient Thermal Management Materials

Huo

Zhang

Yuan

et al. 2023

ACS Appl. Nano Mater.

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With the rapid development of electronic devices, the demand for heat-dissipating materials is increasing. Graphene is a two-dimensional (2D) material with high thermal conductivity. In this study, reduced graphene oxide (rGO) nanosheets are electrostatically sprayed on the surface of electrospun polyvinyl alcohol (PVA) nanofibers. A multilayer rGO/PVA film is fabricated by performing multi-step electrospinning and electrospraying. Finally, the multilayer rGO/PVA films are cut into small pieces and stacked for hot pressing to obtain a flexible H-rGO/ PVA-t film (where t denotes the rGO-layer electrospraying time). Scanning electron microscopy images show that an rGO-layer electrospraying time of 4 h resulted in a uniform distribution of rGO sheets on the PVA nanofiber surface to form continuous heat transfer channels. Hence, the H-rGO/PVA-4 composite exhibits high in-plane and cross-plane thermal conductivities of 6.15 and 0.89 W m −1 K −1 , respectively, and can be used as a thermal-interface material (TIM) to facilitate effective thermal management. Compared to a hot-pressed pure PVA film, the H-rGO/PVA-4 TIM facilitates a lower surface temperature for light-emitting diode (LED) lamps. This study provides a universal approach for fabricating heat-dissipating composites of 2D materials and polymer films.

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Thermal Properties of Surface-Modified and Cross-Linked Boron Nitride/Polyethylene Glycol Composite as Phase Change Material

Cited by 35 publications

References 32 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

Gamma Irradiation and the Radiation Shielding Characteristics: For the Lead Oxide Doped the Crosslinked Polystyrene-b-Polyethyleneglycol Block Copolymers and the Polystyrene-b-Polyethyleneglycol-Boron Nitride Nanocomposites

Electrospraying Graphene Nanosheets on Polyvinyl Alcohol Nanofibers for Efficient Thermal Management Materials

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