Boron nitride foam as a polymer alternative in packaging phase change materials: Synthesis, thermal properties and shape stability

Han, Weifang; Ge, Chunhua; Zhang, Rui; Ma, Zhiyan; Wang, Lixia

doi:10.1016/j.apenergy.2019.01.153

Cited by 75 publications

(31 citation statements)

References 57 publications

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“…Most CPCM with the addition of metal oxide nanoparticles such as nano-CuO, nano-TiO 2 , and nano-Al 2 O 3 have desired performance, excluding beryllium oxide nanoparticles (nano-BeO). [39][40][41][42] Nonoxide nanoparticle additives have strong interatomic bonding energies and crystal structures, including nano-BN, [43][44][45][46] nano-SiC, [47,48] and nano-Si 3 N 4 , [49][50][51] which can notably exhibit high thermal conductivity by decreasing phonon scattering. In consequence, aluminum nitride nanoparticles (nano-AlN) and nano-BN as additives are extensively used to enhance the thermal properties of CPCM.…”

Section: D Structure Additivesmentioning

confidence: 99%

A Review on Thermal Properties Improvement of Phase Change Materials and Its Combination with Solar Thermal Energy Storage

Liu

Zhang

et al. 2021

Energy Tech

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This article summarizes measures to enhance the solar phase change thermal energy storage (TES), starting from two key points in solar phase change TES research: solar phase change materials (PCM) and solar phase transition devices. First, different types of PCM and their advantages and disadvantages are introduced. To improve thermal performance, the research progress of different dimensional thermal conductivity additives, photothermal composite phase change materials (CPCM), and phase change microcapsules is reviewed. Then, the characteristics of commonly used solar phase transition TES devices and the research status of solar energy device improvement with fins and multistage phase transition TES are summarized for the past few years. It is hoped to provide methods and ideas for the design and research of solar phase change TES systems, and to increase the overall heat transfer properties through the combination of multiple optimization methods. Finally, the future direction and research focus of solar phase change TES technology are put forward.

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Section: D Structure Additivesmentioning

confidence: 99%

A Review on Thermal Properties Improvement of Phase Change Materials and Its Combination with Solar Thermal Energy Storage

Liu

Zhang

et al. 2021

Energy Tech

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“…Hexagonal boron nitride (h‐BN) has superior thermal conductivity, electrically insulating, outstanding oxidation resistance, excellent corrosion resistance, and remarkable dielectric properties. [ 29‐32 ] Qian et al . enhanced the thermal conductivity and form stability of paraffin with h‐BN porous scaffolds.…”

Section: Background and Originality Contentmentioning

confidence: 99%

“…enhanced the thermal conductivity of commercial polystyrene filled with core‐shell structured BN@PS [ 34 ] and used BN foam as a polymer alternative in packaging PCMs. [ 31 ] These BN fillers have higher thermal conductivity than traditional BN. Therefore, we continue to use this group of high thermal conductivity BN to improve the thermal conductivity of the component.…”

Section: Background and Originality Contentmentioning

confidence: 99%

Preparation and Thermal Properties of Shape‐stabilized Paraffin/ NPGDMA/BN Composite for Phase Change Energy Storage

Chen

Han

et al. 2020

Chin. J. Chem.

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of main observation and conclusion Paraffin, as an excellent phase change material (PCM), is limited by the leakage problem and low thermal conductivity. In this research, a novel paraffin/neopentyl glycol dimethacrylate/boron nitride (paraffin/NPGDMA/BN) composite PCM was successfully prepared via a physical mixing process. NPGDMA in paraffin/NPGDMA/BN composite PCM was cured by UV light under the action of photo initiator, which can improve the shape stability to avoid the leakage of paraffin in the process of phase change. By comparing the leakage rate, latent heat, and thermal conductivity, the optimal mass ratio of paraffin and NPGDMA was selected to be 7 : 3. It was showed that the presence of 5 wt% BN led to increasing in thermal conductivity by up to 59%. The microstructure of the composite PCMs was characterized by SEM, FTIR, and XRD. The composite PCMs can be processed into a variety of shapes by using molds. The paraffin/NPGDMA/BN composite PCM exhibited a significantly improved shape stability and large phase change enthalpy of 123.0 J/g. The leakage rate of paraffin/NPGDMA/BN was much improved after being soaked with petroleum ether.

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“…The incipient nano-technology presents several superior solutions to this issue which have shown good potential in this regards [9,10]. Literature also shows that it is possible to use specific coatings that prevent the negative effect of flames of PU foam [11][12][13][14][15][16].To enhance the thermal performance of PU foam, however, literature has also presented several innovative ideas that include the use of PCMs as a sustainable material with little environmental impact.Attempts of incorporation of PCMs for within the matrix of PU foams have shown to be successful in terms of increasing insulation capabilities [17][18][19][20][21][22][23][24][25]. Various methods have been devised for this purpose such as direct amalgamation of PCMs and incorporation of polymer micro-encapsulated PCMs [17][18][19][20][21][22][23][24][25].It is worthy to note that other useful purposes such as thermal storage have been seen to benefit from such incorporation [26][27][28][29].This approach has proven to be promising from the perspective of thermal performance.However, many PCMs are inherently flammable, especially in the case of wax-based PCMs such as paraffin wax, which seems to be of interest to many due to other advantageous characteristics.…”

Section: Introductionmentioning

confidence: 99%

INFLUENCE OF PHASE CHANGE MATERIALS (PCMs) ON POLYURETHANE (PU) FOAM FIRE-RETARDATION

Mohammed

Aly

Elnokaly

et al. 2022

Journal of Advanced Engineering Trends

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Polyurethane (PU) foam is a material that has long been regarded as a good thermal insulator for building purposes due to many advantageous attributes, such as cost and feasibility. Yet, to further develop its performance, many studies have focused on the potential of using the micro-structure of PU foam as an encapsulation for PCMs. Despite the apparent advantageous outcome of this premise, from the perspective of thermal performance, fire-retardancy issues may pose as a threat. PU foam is known for its inherent poor fire-retardation properties. With the addition of PCMs, especially waxbased, it is possible that the fire-retardancy would worsen. This would translate into additional costs in terms of application of treatments to counter the disadvantageous hazardous properties. In this study,an empirical investigation is carried out with the aim of determining whether addition PCMs to PU foam would influence its retardation, and to which extent.In this context, granules of wax-based PCMs are encapsulated in to closed-cell rigid PU foam via a simplified amalgamation method. Two concentrations of PCM content are presented in this paper. Then, fire-retardancy testing is performed on specimens to compare the performance of the created PU/PCM specimens with this of regular PU specimens. The outcome of this empirical investigationfurther confirms that addition of PCM to PU foam is disadvantageous in terms of fire-retardancy, and that the amount of added PCM is of considerable influence on this.

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Boron nitride foam as a polymer alternative in packaging phase change materials: Synthesis, thermal properties and shape stability

Cited by 75 publications

References 57 publications

A Review on Thermal Properties Improvement of Phase Change Materials and Its Combination with Solar Thermal Energy Storage

A Review on Thermal Properties Improvement of Phase Change Materials and Its Combination with Solar Thermal Energy Storage

Preparation and Thermal Properties of Shape‐stabilized Paraffin/ NPGDMA/BN Composite for Phase Change Energy Storage

INFLUENCE OF PHASE CHANGE MATERIALS (PCMs) ON POLYURETHANE (PU) FOAM FIRE-RETARDATION

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