Flexible adaptive solar control smart-films comprising thermo-responsive hydrogels
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초록
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Smart windows powered by thermal energy can save electrical energy by controlling indoor solar penetration with adaptive modulation of optical transparency. Although conventional glass-based smart windows have been studied extensively, it is difficult to manufacture curved or flexible glass. In this study, we developed a film-type smart window implemented using thermosensitive hydrogel and transparent PET film. It is prepared by injecting a heat-sensitive hydrogel precursor between two PET films. And in the prepared film-type smart window, the optical transition from the transparent state to the opaque state can be induced by the phase transition of the thermosensitive hydrogel. It is promising that the developed smart window film can be easily installed on existing windows by attaching it to the glass, and there are few restrictions on the size that can be produced compared to conventional glass-based smart windows.