Polyurethane rigid foam composites incorporated with fatty acid ester-based phase change material

Aydın, Ahmet Alper; Okutan, Hasancan

doi:10.1016/j.enconman.2012.12.015

Cited by 68 publications

(22 citation statements)

References 27 publications

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“…One is the leakage of fatty acids when they melt, the other is the thermal conductivity of them is relatively small. To prevent the fatty acids from leakage, microencapsulation technique and using porous supporting materials are developed [13][14][15][16][17][18][19][20][21]. By this way, the composites become shapestabilized phase change materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and thermal properties of fatty acid eutectics and diatomite composites as shape-stabilized phase change materials with enhanced thermal conductivity

Tang

et al. 2015

Solar Energy Materials and Solar Cells

148

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Section: Introductionmentioning

confidence: 99%

Synthesis and thermal properties of fatty acid eutectics and diatomite composites as shape-stabilized phase change materials with enhanced thermal conductivity

Tang

et al. 2015

Solar Energy Materials and Solar Cells

148

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“…To evaluate the quantitative amount of energy from this phase transition, the mechanical properties in a wide temperature range and various frequencies (1, 2.5, 5 and 10 Hz) were measured. Using a modified Arrhenius equation [10], the activation energy of the phase change was quantified. This energy was calculated to be 428 kJ/mol.…”

Section: Dma Analysismentioning

confidence: 99%

Foamy phase change materials based on linear low-density polyethylene and paraffin wax blends

et al. 2018

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Foamy phase-change materials (FPCMs) based on linear low-density polyethylene (LLDPE) blended with 30 wt.% of paraffin wax (W) were successfully prepared for the first time. The advantage of these materials is their double functionality. First, they serve as standard thermal insulators, and second, the paraffin wax acts as a phase change component that absorbs thermal energy (the latent heat) during melting if the temperature increases above its melting point, which ensures better heat protection of buildings, for instance, against overheating. The density of the porous fabricated FPCM was 0.2898 g/cm 3 with pore content 69 vol.% and gel portion achieved 27.5 wt.%. The thermal conductivity of the LLDPE/W foam was 0.09 W/m.K, whereas the thermal conductivity of the neat LLDPE foam prepared under the same conditions was 0.06 W/m.K, which caused a higher porosity of approximately 92 vol.%. The FPCM absorbed or released approximately 22-23 J/g during melting or cooling, respectively, and the material was stable under thermal and mechanical cycling.

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“…The PUs synthesized by ester based polyols are the most important and useful products among various different types of PU materials. There are several applications such as biomedical, coating, industrial adhesives, foams, phase change materials, and others for ester based polyol soft segments. Researchers have been previously studied the chemical structure and physical features of PUs with ester groups as the repeat units in soft segments .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CNT‐polyurethane nanocomposites using ester‐based polyols with different molecular structure: Mechanical, thermal, and electrical properties

Shamsi

Mahyari

Koosha

2016

J of Applied Polymer Sci

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Polyurethanes (PUs) were prepared by in situ polymerization of three diisocyanate with three synthesized low cost esterbased polyols. The effect of diisocyanate type, diol structure, and molar ratio of diisocyanate to polyol on the mechanical properties was examined and the optimum chemical structure was introduced regarding the superior mechanical properties. Also, in presence of well dispersed hydroxylated multiwalled carbon nanotubes (CNT), PU/CNT nanocomposites were synthesized and fully characterized. The results showed that PU synthesized based on 1,4-butane diol (BDO) has the best mechanical properties and thermal stability. Also, the PU samples synthesized from 1,6-hexamethylene diisocyanate (HDI) were more profitable than aromatic diisocyanate structures due to higher crystallinity and microstructure packing. The nanocomposite sample containing 1.5% CNT was the optimum composition for the maximum tensile strength and electrical conductivity. This result was related to the uniform dispersion and bonding of CNTs to PU chains at this composition, while aggregates were formed at higher concentration of CNTs which increased the defects and reduced the uniformity of the structure.

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Polyurethane rigid foam composites incorporated with fatty acid ester-based phase change material

Cited by 68 publications

References 27 publications

Synthesis and thermal properties of fatty acid eutectics and diatomite composites as shape-stabilized phase change materials with enhanced thermal conductivity

Synthesis and thermal properties of fatty acid eutectics and diatomite composites as shape-stabilized phase change materials with enhanced thermal conductivity

Foamy phase change materials based on linear low-density polyethylene and paraffin wax blends

Synthesis of CNT‐polyurethane nanocomposites using ester‐based polyols with different molecular structure: Mechanical, thermal, and electrical properties

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