Abstract

The heat-shielding performance of Polymer Dispersed Liquid Crystal (PDLC) films incorporating OPV8 and PV10 metallized Infrared (IR)-reflective coatings was investigated. The thermal behavior of OPV8– PDLC and PV10–PDLC films was compared with conventional ITO–PDLC structures by measuring the temperature difference (ΔT) between front and back film surfaces under controlled infrared lamp exposure at distances of 50-10cm. Significant reductions in transmitted infrared heat were observed in OPV8- and PV10-based PDLC films due to their enhanced Near-Infrared (NIR) reflectivity. Doublelayer OPV8–OPV8 and PV10–PV10 configurations exhibited the highest ΔT values, confirming their effectiveness in suppressing heat transfer. These results demonstrate that integrating IR-reflective metallized coatings into PDLC architectures significantly improves thermal shielding performance, supporting their application in energy-efficient switchable glazing systems..

Keywords: PDLC; Liquid crystal; Infrared reflection; OPV8; PV10; NIR; Heat shielding; IR lamp exposure