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合成了含硫高折光紫外光固化树脂,采用红外光谱(FT-IR)、核磁和质谱表征了树脂结构。配制了一系列紫外光固化体系,用FT-IR表征了固化过程特征吸收峰的变化。测试了紫外光固化膜的凝胶率、吸水率、力学性能、体积收缩率、折光率和表面水接触角。结果表明:在相同稀释剂条件下,与双酚A环氧丙烯酸双酯光固化膜相比,高折光紫外光固化树脂(二苯硫醚环氧丙烯酸双酯含量65%)固化后凝胶率可以达到97.2%,体积收缩率在9.71%,断裂强度为26.72MPa,断裂伸长率5.23%,水接触角为55.72°,与双酚A环氧丙烯酸双酯体系相当,但其折光率为1.5572,明显高于双酚A环氧丙烯酸双酯体系的1.3069。
The sulfur-containing high refractive UV curable resin was synthesized. The structure of the resin was characterized by FT-IR, NMR and MS. A series of UV curing systems were prepared and characterized by FT-IR. UV-cured films were tested for gel fraction, water absorption, mechanical properties, volumetric shrinkage, refractive index and surface water contact angle. The results showed that under the same diluent conditions, compared with bisphenol A epoxy acrylate photocurable film, the gel fraction of high refractive UV curable resin (diphenyl sulfide epoxy acrylate content of 65%) after curing 97.2%, volume shrinkage 9.71%, breaking strength 26.72MPa, elongation at break 5.23%, water contact angle 55.72 °, which is equivalent to bisphenol A epoxy acrylate system, but the refractive index is 1.5572 , Which is obviously higher than 1.3069 of bisphenol A epoxy acrylate system.