基于环氧-硫醇的高对比度彩色聚合物分散液晶的制备及性能

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中图分类号： O753+ .2;TB324 文献标识码：A doi：10.37188/CJLCD.2025-0091 CSTR：32172.14.CJLCD.2025-0091

Abstract： Polymer-dispersed liquid crystal （PDLC） materials have been widely applied in smart windows， privacy glass，automotive sunroofs，and display technologies due to their unique electro-optical properties. However，conventional PDLC films，typically white or gray，only switch between transparent and scattering states，limiting their potential in personalized designs and high-value applications. To enrich PDLC coloration and enhance performance，this study incorporates three anthraquinone dyes （Disperse Orange，Solvent Green 28，and Solvent BluelO4）and investigates their concentration-dependent efects.Key findings demonstrate that Disperse Orange increases driving voltage while significantly improving overall performance. At0.5% dye concentration（mass fraction）and 15μm cell thickness，the PDLC achievesa contrast ratio（CR）of 2O3.53， on-state transmittance of 81% ，and peel strength of 194.74N/m .Solvent Green 28 and Solvent Blue 104 reduce driving voltages，with Solvent Green 28 decreasing saturation voltage（ Vsat ）from 28.67V to 17.13V ， while Solvent Blue 1O4 lowers Vsat from 28.67V to 17.14V . However，excessive dye loading degrades mechanical properties，reducing peel strength from 150.45N/m （pristine）to 124.47N/m and 133.07N/m ， respectively. These results establish a dual-optimization strategy for PDLC systems，simultaneously enhancing electro-optical and mechanical performance through rational dye selection and concentration control.

Key words： polymer-dispersed liquid crystal;anthraquinone dye；epoxy-thiol; electro-optical properties; mechanical properties

1引言

聚合物分散液晶（PolymerDispersedLiquidCrystal，PDLC）的概念最早由Doane研究团队在20世纪80年代首次提出，该团队深入研究了向列相液晶微滴的电场光散射行为，为现代PDLC技术奠定了基础[1-2]。（剩余11812字）