Peking University

Cheng Zou

Qian Wang

Xiao Bi Liang

Huai Yang

Lanying Zhang

Mei Chen

Shumeng Guo

Cuihong Zhang

Chenyue Li

The present invention relates to a temperature-controlled dimming film with a function of shielding near-infrared light, which comprises a polymer network skeleton and liquid crystal molecules, wherein the polymer network skeleton consists of a polymer-dispersed liquid crystal network structure and a polymer-stabilized liquid crystal network structure and comprises a polymer matrix with pores inside which polymer networks are vertically aligned; and the liquid crystal molecules are dispersed in the polymer network skeleton and have smectic (SmA)-cholesteric (N*) phase transition. Between the skeleton and the liquid crystal molecules, nanoparticles, having absorption at 800-3000 nm, are dispersed. In the invention, a stepwise polymerization method is utilized to construct a PD&SLC network structure between two substrates, which greatly improve the bonding strength between the two substrates and the heat insulation performance of the temperature-controlled liquid crystal dimming film.

Temperature-controlled dimming film with a function of shielding near-infrared light and preparation method thereof

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Beijing, China

Cheng Zou