目的 制备低折射率光固化涂层。 方法 以全氟十一烷基丙烯酸酯( FA) 、甲基丙烯酸三氟乙酯( TRIFEMA) 、四氢呋喃丙烯酸酯 GM61 P00 ( THFA) 和聚氨酯丙烯酸酯( PU) 为主要组分,考察各组分用量对涂层接触角、吸光度和折射率的影响。 结果 在一定的用量范围内,折射率随 FA 和 TRIFEMA 用量增加而降低,随 THFA 和 PU 用量增加而升高;接触角随 FA 和 TRIFEMA 用量增加,先增大,然后保持稳定,随 THFA 和 PU 用量增加而减小;吸光度随 FA 用量增加而增大,随 TRIFEMA,THFA 和 PU 用量增加而减小。 结论 低折射率光固化涂料的最佳配比为 m( FA) : m( TRIFEMA) : m( THFA) : m( PU) = 2 :5 : 1 . 25 : 1 ,其涂层折射率为 1 . 387 ,吸光度为 0 . 0091 。

Objective The aim of this paper was to prepare the low-refractive index UV-curable coating. Methods 1 H,1 H, 11 H-perfluoroundecyl acrylate ( FA ) , Trifluoroethyl methacrylate ( TRIFEMA ) , Tetrahydrofurfuryl acrylate GM61 P00 ( THFA) and Polyurethane acrylate( PU) were used as the main ingredients, and their influences on the water contact angle, the absorbance of the film and the refractive index of the coating were investigated. Results Within a certain dosage range, the refractive index decreased with the increasing content of FA or TRIFEMA, and increased with the increase of THFA or PU; the contact angle increased and then remained stable with the increase of the FA and TRIFEMA, while it decreased when THFA and PU increased; the absorbance increased with increasing FA content,but when TRIFEMA, THFA and PU increased, the absorbance became lower. Conclusion The optimal proportion for the low-refractive index UV-curable coating was m( FA) : m( TRIFEMA) : m( THFA) : m( PU) = 2 : 5 : 1 . 25 :1 . Under this condition, the refractive index was 1 . 387 , and the absorbance was 0 . 0091 .