Hydrothermal Carbon‐Doped Polyethylene Glycol as Phase‐Change Materials with Good Thermal Conductivity and Shape‐Stability

2020 ◽  
Vol 5 (2) ◽  
pp. 480-487 ◽  
Author(s):  
Huizhi Yang ◽  
Xiaohan Yu ◽  
Chunhua Ge ◽  
Yufeng Bai ◽  
Xiangdong Zhang
Keyword(s):  
Thermal Conductivity ◽  
Polyethylene Glycol ◽  
Phase Change ◽  
Phase Change Materials ◽  
Shape Stability ◽  
Carbon Doped

Polyethylene glycol/Cu/SiO2 form stable composite phase change materials: preparation, characterization, and thermal conductivity enhancement

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58740-58748 ◽  
Author(s):  
Xiaoguang Zhang ◽  
Zhaohui Huang ◽  
Bin Ma ◽  
Ruilong Wen ◽  
Ming Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Polyethylene Glycol ◽  
Phase Change ◽  
Phase Change Materials ◽  
Sol Gel ◽  
Thermal Conductivity Enhancement ◽  
Gel Method ◽  
Conductivity Enhancement ◽  
Composite Phase Change Materials ◽  
Ultrasound Assisted

Novel form-stable composite phase change materials (FS-CPCMs) of polyethylene glycol (PEG)/Cu/SiO2 were prepared by adding Cu powder to PEG and SiO2via the ultrasound-assisted sol–gel method.

An ice-templated assembly strategy to construct graphene oxide/boron nitride hybrid porous scaffolds in phase change materials with enhanced thermal conductivity and shape stability for light–thermal–electric energy conversion

2016 ◽  
Vol 4 (48) ◽  
pp. 18841-18851 ◽  
Author(s):  
Jie Yang ◽  
Li-Sheng Tang ◽  
Rui-Ying Bao ◽  
Lu Bai ◽  
Zheng-Ying Liu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Graphene Oxide ◽  
Phase Change ◽  
Energy Conversion ◽  
Phase Change Materials ◽  
Electric Energy ◽  
Porous Scaffolds ◽  
Shape Stability ◽  
Assembly Strategy ◽  
Enhanced Thermal Conductivity

Multifunctional phase change materials for light-thermal-electric energy conversion are fabricated by an ice-templated assembly strategy.

scholarly journals State of the Art in PEG-Based Heat Transfer Fluids and Their Suspensions with Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 86
Author(s):  
Alina Adriana Minea
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Polyethylene Glycol ◽  
Phase Change ◽  
Phase Change Materials ◽  
State Of The Art ◽  
Short Review ◽  
Numerical Work ◽  
Heat Transfer Fluids ◽  
Improved Performance

Research on nanoparticle enhanced fluids has increased rapidly over the last decade. Regardless of several unreliable reports, these new fluids have established performance in heat transfer. Lately, polyethylene glycol with nanoparticles has been demarcated as an innovative class of phase change materials with conceivable uses in the area of convective heat transfer. The amplified thermal conductivity of these nanoparticle enhanced phase change materials (PCMs) over the basic fluids (e.g., polyethylene glycol—PEG) is considered one of the driving factors for their improved performance in heat transfer. Most of the research, however, is centered on the thermal conductivity discussion and less on viscosity variation, while specific heat capacity seems to be fully ignored. This short review abridges most of the recent investigations on new PEG-based fluids and is dedicated especially to thermophysical properties of the chemicals, while a number of PEG-based nanofluids are compared in terms of base fluid and/or nanoparticle type and concentration. This review outlines the possibility of developing promising new heat transfer fluids. To conclude, this research is in its pioneering phase, and a large amount of experimental and numerical work is required in the coming years.

Heat Managing Organic Materials: Phase Change Materials with High Thermal Conductivity and Shape Stability

2022 ◽  
Author(s):  
Hyeyoon Ko ◽  
Dong-Gue Kang ◽  
Minwoo Rim ◽  
Jahyeon Koo ◽  
Seok-In Lim ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Phase Change ◽  
Building Block ◽  
Phase Change Materials ◽  
Organic Materials ◽  
High Thermal Conductivity ◽  
Graft Polymer ◽  
Shape Stability ◽  
Molecular Building Block

An advanced heat managing graft polymer (AHG) was fabricated by introducing a mesogen-based molecular building block that facilitates photon transfer. The fabricated AHGs exhibit excellent thermal conductivity as well as...

The effects of nanoparticles on morphology and thermal properties of erythritol/polyvinyl alcohol phase change composite fibers

e-Polymers ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 321-329 ◽  
Author(s):  
Haishan Che ◽  
Qianqiao Chen ◽  
Qin Zhong ◽  
Si He
Keyword(s):  
Thermal Conductivity ◽  
Thermal Properties ◽  
Polyvinyl Alcohol ◽  
Phase Change ◽  
Phase Change Materials ◽  
Composite Fibers ◽  
Fiber Morphology ◽  
Shape Stability ◽  
Heat Loss Rate ◽  
High Enthalpy

AbstractErythritol (E)/polyvinyl alcohol (PVA) phase change composite fibers in which PVA acts as supporting material and different contents of erythritol act as phase change materials (PCMs) were prepared by electrospinning. The effects of different nanoparticles on fiber morphology and thermal properties of composites were also studied. The morphology and thermal properties were characterized by using scanning electron microscopy (SEM), differential scanning calorimetery (DSC) and a thermal conductivity test, respectively. The results showed E/PVA composite fibers were cylindrical with a smooth surface. The content of erythritol in composites could reach a high of 80 wt% with good shape stability, and a high enthalpy value of 258.9 J/g after 100 thermal cycles. The effects of nanoparticles on composites were mainly embodied in decreasing average fiber diameters (AFDs), phase change temperatures and enthalpies with the increase of particle concentrations, and improving fiber stability and thermal conductivity. Among them, the smallest AFDs (0.56 μm) and the lowest heat loss rate (1.0%) were obtained from composites with 4% nano C and 4% nano Al2O3, respectively. The 4% nano SiO2 composites possessed the best shape stability. In addition, the composites that contains 4% nano carbon could decrease the erythritol’s supercooling of 7.55°C, and showed the highest thermal conductivity of 1.55 W/m·K, which was 167% of E/PVA composites. These results demonstrate that E/PVA composites possess high enthalpy values while they improve shape stability and thermal conductivity.

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