PEG/SiO2-Al2O3 hybrid form-stable phase change materials with enhanced thermal conductivity

被引：142

作者：

Tang, Bingtao ^{[1
]}

Wu, Cheng ^{[1
]}

Qiu, Meige ^{[1
]}

Zhang, Xiwen ^{[1
]}

Zhang, Shufen ^{[1
]}

机构：

[1] Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2014年 / 144卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Composite material; Sol-gel growth; Phase transition; Thermal conductivity; ACID/EXPANDED PERLITE COMPOSITE; ENERGY-STORAGE; SOLID DISPERSIONS; POLY(ETHYLENE GLYCOL); PCM; RELIABILITY; DISSOLUTION; CATALYST; SYSTEMS; FILMS;

D O I：

10.1016/j.matchemphys.2013.12.036

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The thermal conductivity of form-stable PEG/SiO2 phase change material (PCM) was enhanced by in situ doping of Al2O3 using an ultrasound-assisted sol-gel method. Fourier transform infrared spectroscopy (FT-IR) was used to characterize the structure, and the crystal performance was characterized by the X-ray diffraction (XRD). Differential scanning calorimetry (DSC) and thermogravimetric analyzer (TGA) were used to determine the thermal properties. The phase change enthalpy of PEG/SiO2-Al2O3 reached 124J g(-1), and thermal conductivity improved by 12.8% for 3.3 wt% Al2O3 in the PCM compared with PEG/SiO2. The hybrid PCM has excellent thermal stability and form-stable effects. Crown Copyright (C) 2014 Published by Elsevier B.V. All rights reserved.

引用

页码：162 / 167

页数：6

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