The Effect of Hydroxylated Multi-Walled Carbon Nanotubes on the Properties of Peg-Cacl2 Form-Stable Phase Change Materials

Calcium ions can react with polyethylene glycol (PEG) to form a form-stable phase change material, but the low thermal conductivity hinders its practical application. In this paper, hydroxylated multi-walled carbon nanotubes (MWCNTs) with different mass are introduced into PEG1500·CaCl2 form-stable...

Full description

Saved in:
Bibliographic Details
Published in:Energies (Basel) 2021-03, Vol.14 (5), p.1403
Main Authors: Zheng, Lingyu, Zhang, Xuelai, Hua, Weisan, Wu, Xinfeng, Mao, Fa
Format: Article
Language:English
Subjects:
Boron
Calcium
Calcium chloride
Calcium ions
Carbon fibers
Composite materials
Conductivity
Energy storage
form-stable phase change materials
Heat conductivity
Heat transfer
Latent heat
Methods
Molecular weight
MWCNTs
Nanotechnology
PEG
Phase change materials
Polyethylene glycol
Polymers
Porous materials
Thermal conductivity
Thermal resistance
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Calcium ions can react with polyethylene glycol (PEG) to form a form-stable phase change material, but the low thermal conductivity hinders its practical application. In this paper, hydroxylated multi-walled carbon nanotubes (MWCNTs) with different mass are introduced into PEG1500·CaCl2 form-stable phase change material to prepare a new type of energy storage material. Carbon nanotubes increased the mean free path (MFP) of phonons and effectively reduced the interfacial thermal resistance between pure PEG and PEG1500·CaCl2 3D skeleton structure. Thermal conductivity was significant improved after increasing MWCNTs mass, while the latent heat decreases. At 1.5 wt%, composite material shows the highest phase change temperature of 42 °C, and its thermal conductivity is 291.30% higher than pure PEG1500·CaCl2. This article can provide some suggestions for the preparation and application of high thermal conductivity form-stable phase change materials.
ISSN:1996-1073
1996-1073
DOI:10.3390/en14051403