Pourable and room temperature flowable ladder-structured polysilsesquioxanes were synthesized and applied as functional optical hard coatings. Organic functional group type (propyl, hexyl, octyl, dodecyl) and their copolymer composition with UV-curable methylacryloxypropyl group were selected as to control both pre-cured viscosity and final mechanical properties independent of molecular weight. Ladder-structured polysilsesquioxanes with longer alkyl side chains exhibited higher fluidity and flexibility while maintaining its optical property and mechanical strength. The solvent-free processability of our synthesized materials along with their superior optical and mechanical properties over commercial solvent-based hard coatings suggest the high value of our hybrid materials for the coatings industry.

合成了可浇注和室温流动的梯形结构聚倍半硅氧烷，并将其用作功能性光学硬涂层。选择有机官能团类型（丙基、己基、辛基、十二烷基）及其与可紫外线固化的甲基丙烯酰氧基丙基的共聚物组合物，以控制预固化粘度和最终机械性能，而与分子量无关。具有更长烷基侧链的梯形结构聚倍半硅氧烷表现出更高的流动性和柔韧性，同时保持其光学性能和机械强度。我们合成材料的无溶剂加工性以及它们优于商业溶剂型硬涂层的光学和机械性能表明我们的混合材料在涂料行业中具有很高的价值。