Amino-Functionalized Single-Walled Carbon Nanotubes-Integrated Polyurethane Phase Change Composites with Superior Photothermal Conversion Efficiency and Thermal Conductivity

被引：113

作者：

Du, Xiaosheng ^{[1
]}

Xu, Jianing ^{[1
]}

Deng, Sha ^{[1
]}

Du, Zongliang ^{[1
]}

Cheng, Xu ^{[1
]}

Wang, Haibo ^{[1
]}

机构：

[1] Sichuan Univ, Coll Biomass Sci & Engn, 24 South Sect 1,Yihuan Rd, Chengdu 610065, Sichuan, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2019年 / 7卷 / 21期

基金：

中国国家自然科学基金;

关键词：

Solar-thermal conversion; Phase change materials; Single-walled carbon nanotubes; Poly(ethylene glycol); Thermal energy storage; ENERGY-CONVERSION; POLYETHYLENE-GLYCOL; STORAGE; PERFORMANCE; DRIVEN; NANOCOMPOSITES; NANOMATERIALS; TRANSITION; PEG;

D O I：

10.1021/acssuschemeng.9b03853

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The development of organic phase change materials (PCMs) with good shape stability, superior photothermal conversion efficiency, and high thermal conductivity is critical for practical photothermal utilizations. Herein, novel form-stable solar-thermal conversion and storage materials (SPCMs) with superior photothermal conversion efficiency and thermal conductivity were successfully synthesized by introducing amino-functionalized single walled carbon nanotubes (SWNTs-NH2) into poly(ethylene glycol)-based polyurethane PCM. Differential scanning calorimetry (DSC) and thermal conductivity test results showed the SPCMs possessed relatively high phase change enthalpies in the range of 124.0-126.1 J/g and that the introduction of SWNTs-NH2 effectively enhanced the thermal conductivities of SPCMs. Sunlight irradiation experiments showed that the introduction of SWNTs-NH2 into PEG-based polyurethane PCM significantly improved the solar-thermal conversion and storage efficiency of SPCMs from 44.8% to 89.3%. The light irradiation cycling tests and thermogravimetric (TG) analyses indicated that the SPCMs exhibit satisfactory reversible stability and thermal stability. Moreover, SPCMs with SWNTs-NH2 added exhibited much higher solar-thermal conversion and storage efficiency and better reversible stability than SPCM with SWNTs added. In conclusion, the synthesized SPCMs show considerable potential for solar-thermal conversion and storage applications.

引用

页码：17682 / 17690

页数：17

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