Gel Smart Window with Controllable LCST by Adding Ethylene Glycol for Ice and Evaporation Resistance.

Autor: Ding, Junjie1 (AUTHOR), Zhang, Yu1 (AUTHOR), Qu, Keyu1 (AUTHOR), Ma, Xintao1 (AUTHOR), Mu, Qiyu1 (AUTHOR), Huang, Zixu1 (AUTHOR), Zhao, Yi1 (AUTHOR), Zhang, Shaohua1 (AUTHOR) zhangshaohua@ldu.edu.cn, Ma, Hecheng2 (AUTHOR) Ma-Hecheng@email.sdu.edu.cn, Xu, Wenlong1,3 (AUTHOR) xuwenlong@ldu.edu.cn
Předmět:
Zdroj: Journal of Polymers & the Environment. Jan2023, Vol. 31 Issue 1, p423-431. 9p.
Abstrakt: As an effective energy-saving technology, smart windows have become one of the solutions to the global common problem of huge energy consumption. However, there are few studies on applying smart windows to extreme environments (extremely high/low temperature). In this study, we imparted ice resistance and evaporation resistance to smart windows by adding ethylene glycol (EG). More interestingly, the addition of EG also affected the lower critical solution temperature (LCST) of the smart window, making it possible to have a controllable LCST range. With the increase of EG concentration from 0 to 70%, the lowest temperature that the gel can withstand increased from − 10 °C to -50 °C and the evaporation resistance performance of the gel increased by about 10 times, while the LCST of the gel decreased from 50 °C down to 25 °C. And a series of studies were conducted on smart windows to prove the above conclusion, including rheological measurements to characterize its mechanical properties, thermogravimetric analysis (TGA), evaporation rate of gel at about 25 °C, and differential scanning calorimetry measurements (DSC) to demonstrate the evaporation and ice resistance of gel smart windows under extreme environmental conditions. In addition, we also conducted cycle tests and energy-saving experiments on smart windows to prove their high practical application value. This is undoubtedly an effective and excellent way to deal with the energy crisis on the basis of expanding the practical application scope of smart windows. At the same time, this may also be able to fill the gap in the current application of smart windows in extreme conditions. [ABSTRACT FROM AUTHOR]
Databáze: GreenFILE
Externí odkaz: