Polyethylene glycol—based functional composite phase change materials with excellent electrical and thermal conductivities

3D spongy-like porous carbon materials derived from eggplants were used as scaffolds for encapsulating polyethylene glycol (PEG) to fabricate shape-stabilized composite phase-change materials with excellent solar-to-thermal conversion efficiency.

Download Full-text

Effect of polymer-derived silicon carbonitride on thermal performances of polyethylene glycol based composite phase change materials

Solar Energy ◽

10.1016/j.solener.2020.07.092 ◽

2020 ◽

Vol 208 ◽

pp. 282-288

Author(s):

Chaoming Wang ◽

Ke Chen ◽

Zheng Huang ◽

Tingjun Wang ◽

Feng Chen

Keyword(s):

Polyethylene Glycol ◽

Phase Change ◽

Phase Change Materials ◽

Silicon Carbonitride ◽

Composite Phase Change Materials

Download Full-text

Preparation and thermal properties of shape-stabilized composite phase change materials based on polyethylene glycol and porous carbon prepared from potato

RSC Advances ◽

10.1039/c5ra25685b ◽

2016 ◽

Vol 6 (19) ◽

pp. 15821-15830 ◽

Cited By ~ 39

Author(s):

Bo Tan ◽

Zhaohui Huang ◽

Zhaoyu Yin ◽

Xin Min ◽

Yan'gai Liu ◽

...

Keyword(s):

Thermal Properties ◽

Polyethylene Glycol ◽

Phase Change ◽

Phase Change Material ◽

Porous Carbon ◽

Phase Change Materials ◽

Composite Phase Change Materials ◽

Composite Phase Change Material ◽

Change Material

A shape-stabilized composite phase change material comprising PEG and porous carbon was prepared by absorbing PEG into porous carbon.

Download Full-text

Polyethylene Glycol/Expanded Vermiculite Shape-Stabilized Composite Phase Change Materials for Thermal Energy Storage

Materials Science Forum ◽

10.4028/www.scientific.net/msf.847.39 ◽

2016 ◽

Vol 847 ◽

pp. 39-45

Author(s):

Yong Deng ◽

Jin Hong Li ◽

Ting Ting Qian ◽

Wei Min Guan ◽

Xiang Wang

Keyword(s):

Polyethylene Glycol ◽

Phase Change ◽

Latent Heat ◽

Phase Change Materials ◽

Vacuum Impregnation ◽

Impregnation Method ◽

Scanning Calorimetry ◽

Heating And Cooling ◽

Expanded Vermiculite ◽

Composite Phase Change Materials

Polyethylene glycol (PEG)/ expanded vermiculite (EVMT) shape-stabilized composite phase change material (ss-CPCM) was prepared by a facile vacuum impregnation method. The maximum mass percentage for PEG retained in ss-CPCM was 75.1 wt.% due to specific non-uniform flat layers pore structure of EVMT. The scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FT-IR) analysis results indicated that the melted PEG was adsorbed on the surface and completely dispersed into the pores of EVMT and no chemical changes took place during the heating and cooling processes. X-ray diffraction (XRD) results showed that the crystal structure of PEG was not destroyed after impregnation whereas the crystallization process of PEG was greatly restrained. Differential scanning calorimetry (DSC) results indicated that ss-CPCM melted at 57.61°C with a latent heat of 103.1 J/g and solidified at 33.19°C with a latent heat of 88.29 J/g. In addition, the thermal conductivity of ss-CPCM reached 0.418W/m K. The ss-CPCM can be considered as promising candidate materials for building applications due to their suitable phase change temperature, large latent heat and excellent chemical compatibility.

Download Full-text

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

RSC Advances ◽

10.1039/c6ra12890d ◽

2016 ◽

Vol 6 (63) ◽

pp. 58740-58748 ◽

Cited By ~ 24

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.

Download Full-text

Hot Probe Method for Measuring Thermal Conductivity of Copper Nano-Particles/Paraffin Composite Phase Change Materials

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.561.428 ◽

2013 ◽

Vol 561 ◽

pp. 428-434 ◽

Cited By ~ 1

Author(s):

Yan Zhou ◽

Yan Wang ◽

Jin Hui ZHang ◽

Qing Ling Li

Keyword(s):

Thermal Conductivity ◽

Phase Change ◽

Phase Change Materials ◽

Operation Time ◽

Probe Method ◽

Nano Particles ◽

Experimental Device ◽

Composite Phase Change Materials ◽

Hot Probe ◽

Thermal Conductivities

Hot probe method for measuring thermal conductivity has the advantages of easy operation, time saving, high accuracy and low poison. In this study, experimental device with high precision for measuring thermal conductivity by hot probe was designed. The measurement error of experimental device is less than 2.4%. This experimental device was used to measure thermal conductivities of pure paraffin (octadecane) and copper nano-particles/octadecane composite phase change materials (PCMs). The composite PCMs were prepared with copper nano-particles doping levels of 0.1, 0.2, 0.5, 1and 2 wt%. The experimental results showed that hot probe method is an effective method to measure the thermal conductivities of PCMs; copper nano-particles added into paraffin can improve thermal conductivity effectively. What’s more, the thermal conductivities of PCMs increase with the growing mass fraction of copper nano-particles.

Download Full-text