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Amino-Functionalized Single-Walled Carbon Nanotubes-Integrated Polyurethane Phase Change Composites with Superior Photothermal Conversion Efficiency and Thermal Conductivity
journal contribution
posted on 2019-10-18, 12:07 authored by Xiaosheng Du, Jianing Xu, Sha Deng, Zongliang Du, Xu Cheng, Haibo WangThe
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.
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stabilitysunlight irradiation experimentsphotothermal conversion efficiencystorage efficiencynovel form-stable solar-thermal conversionPEG-based polyurethane PCMSuperior Photothermal Conversion Efficiencyconductivity test resultsDSCSPCMsolar-thermal conversionphase change materialsamino-functionalized single-walled carbon nanotubeslight irradiation cycling testsTGphase change enthalpiesSWNTDifferential scanning calorimetryAmino-Functionalized Single-Walled Carbon Nanotubes-Integrated Polyurethane Phase Change Composites
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