Synthesis and Thermal Performance of Polyurea Microcapsulated Phase Change Materials by Interfacial Polymerization

Zhang, Hui; Shi, Yeting; Shentu, Baoqing; Wang, Zhixue

doi:10.1134/s1560090417060124

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…8,9 Due to the smaller particle size and larger specific surface area, microPCMs exhibit relatively higher phase-change enthalpy and more remarkable effect on heat storage and temperature adjustment. 10,11 The most widely accepted microcapsule shell materials include polyurethane 12 (PU), melamine-formaldehyde resin 13 (MF), and urea-formaldehyde resin 14 (UF), which possess excellent high-temperature performance, and so on.…”

Section: Introductionmentioning

confidence: 99%

Temperature adjusting performance of thermoregulated woven fabric finished with phase-change microcapsule in low-temperature environment

Chen

Fan

et al. 2019

Journal of Engineered Fibers and Fabrics

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This study deals with the temperature adjusting performance of thermoregulated woven fabric based on phase-change microcapsules in low-temperature environment. Phase-change microcapsules containing n-octadecane (MicroC18) with melamine–urea–formaldehyde as shell were synthesized by an in situ polymerization using styrene maleic anhydride copolymer as emulsifying agent. Surface morphology, chemical structure, and thermal properties of MicroC18 were, respectively, characterized using field emission scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction, differential scanning calorimetry, and thermal gravimetric analysis. The results indicate that a series of microcapsules with spherical shapes were fabricated with about 20.6-μm weight-average particle size. Latent heat is about 188.2 J/g and encapsulation efficiency of n-octadecane (C18) is 85.2%. Phase-change microcapsule composite fabric was prepared through foaming method with plain weave, twill weave, and satin weave as substrates. Thermal insulation property, low-temperature resistance, air permeability, and mechanical property of the finished fabric were investigated. The results show that the cooling rate of finished fabric is significantly slower, and low-temperature resistance time increases. Finished satin fabric has the best thermal resistance performance. The air permeability of finished fabrics is lightly reduced, and final elongation in warp and weft are increased by 16.5% and 15.2%, respectively.

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Section: Introductionmentioning

confidence: 99%

Temperature adjusting performance of thermoregulated woven fabric finished with phase-change microcapsule in low-temperature environment

Chen

Fan

et al. 2019

Journal of Engineered Fibers and Fabrics

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“…Due to the rapid growth of the consumption of fossil fuels followed by environmental impact and energy resources [1], both scientific societies and industrial communities are concentrating on the improvement of energy utilization efficiency and the development of renewable energy [2,3,4,5,6,7,8]. Phase change materials (PCMs) are different from the conventional thermal energy-storage materials, for their capability in absorbing and releasing latent heat through phase transitions almost without temperature changing [9,10,11,12,13,14,15], and are considered as candidates of renewable energy materials [16,17,18,19,20].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Performance of Composite Microencapsulated Phase Change Materials with Palmitic Acid Ethyl Ester as Core

Yin

Zhu

et al. 2018

Polymers

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Microencapsulation of phase change materials (PCMs) could prevent the leakage of PCMs during solid–liquid phase change process. However, their applications are mainly limited by the compactness and thermal stability of the traditional polyurea shell microcapsules. To increase the thermal compactness and thermal stability of PCM microcapsules, tetraethylorthosilicate (TEOS) was employed to form polymer/SiO 2 composite shells to enhance the mechanical performance of polyurea and polyurethane microcapsule via interfacial polymerization and in situ polymerization. The morphology and chemical components of the microcapsules were characterized by field-emission scanning electron microscope (FE-SEM) and Fourier transform infrared (FT-IR) spectroscopy, respectively. The thermal properties of the microcapsules were investigated by differential scanning calorimetry (DSC) and thermal gravity analysis (TGA). The results showed the smoothness and compactness of both polyurea–SiO 2 and polyurethane–SiO 2 microcapsules enhanced slightly, when compared with that without TEOS addition. Moreover, the SiO 2 composite shell had good effect on thermal compactness, as the weight loss rate of polyurea–SiO 2 microcapsules and polyurethane–SiO 2 microcapsules decreased 3.5% and 4.1%, respectively.

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Microencapsulated phase change material via Pickering emulsion stabilized by graphene oxide for photothermal conversion

Maithya

Feng

et al. 2020

J Mater Sci

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Synthesis and Thermal Performance of Polyurea Microcapsulated Phase Change Materials by Interfacial Polymerization

Cited by 4 publications

References 15 publications

Temperature adjusting performance of thermoregulated woven fabric finished with phase-change microcapsule in low-temperature environment

Temperature adjusting performance of thermoregulated woven fabric finished with phase-change microcapsule in low-temperature environment

Fabrication and Performance of Composite Microencapsulated Phase Change Materials with Palmitic Acid Ethyl Ester as Core

Microencapsulated phase change material via Pickering emulsion stabilized by graphene oxide for photothermal conversion

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