期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 9, 期 36, 页码 20565-20575出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta04073a
关键词
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资金
- National Natural Science Foundation of China [21975107]
- Natural Science Foundation of Jiangsu Province [SBK2019020945]
- Fundamental Research Funds for the Central Universities [JUSRP51724B]
- National First-Class Discipline Program of Light Industry Technology and Engineering [LITE2018-21]
- Postgraduate Research & Practice Innovation Program of Jiangnan University [JNKY19_030]
- Excellent Doctoral Cultivation Project of Jiangnan University
A solar-driven thermochromic fabric has been successfully developed with the function of light intensity monitoring. It demonstrates stable photothermal conversion and high-contrast reversible color change performance under sunlight irradiation. The fabric allows timely monitoring of sunlight irradiation intensity for human body protection and health management.
Considering the harm to human skin caused by excessive solar radiation, a simple method to indicate sunlight intensity and alert people instantly is needed. A solar-driven thermochromic fabric (SDTCF) with the function of light intensity monitoring is successfully constructed via printing a solar-driven thermochromic paste onto the surface of polyester fabric. With the enhancement of irradiation intensity from 100 W m(-2) to 600 W m(-2), the saturation temperature of the SDTCF increases sharply from 32.2 degrees C to 52.6 degrees C based on photothermal conversion. Under solar irradiation, the color of the SDTCF changes visibly from orange at ambient temperature (21.5 degrees C) to green (38.0 degrees C), which is attributed to the heat generated by photothermal conversion. The temperature decreases rapidly to ambient temperature once the light source is turned off, and the color of the SDTCF returns instantly to the initial orange. These results demonstrate that the SDTCF exhibits stable photothermal conversion and high-contrast reversible color change performance under sunlight irradiation. The SDTCF makes it possible to monitor the sunlight irradiation intensity in a timely fashion via color change for human body protection and health management. The SDTCF maintains stable solar-driven heating performance even throughout 100 heating/cooling cycles, and it shows outstanding durability against repeated bending, twisting, and stretching deformations.
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