助剂对紫外荧光喷墨油墨发光性能的影响

为了获得衰减不明显的高荧光强度的紫外荧光喷墨油墨,选用乙醇和三乙醇胺分别作为干燥剂和pH 值调节剂,配制油墨样品,探讨了乙醇和三乙醇胺含量对荧光强度的影响;选用不同种类及含量的紫外吸收剂,分别制备油墨样品,探讨了紫外吸收剂种类和含量对荧光强度、荧光衰减的影响。结果表明,随着乙醇含量的增加,三乙醇胺含量的降低,荧光强度显著增强;紫外吸收剂UV-7292 对荧光强度影响较小,且能改善油墨的耐光性能。在满足其它性能的前提下,当乙醇、三乙醇胺和紫外吸收剂UV-7292 的质量分数分别为15%,0. 6%和0. 5%时,紫外荧光喷墨油墨发光性能最佳。

Effect of Additive on Luminescence Property of UV Fluorescent Inkjet Ink

In order to obtain fluorescence inkjet ink with high fluorescence intensity and inapparent attenuation, ethanol and triethanolamine were chosen as desiccant and pH regulator respectively to prepare ink samples. The influences of ethanol and triethanolamine contents on fluorescence intensity were discussed. Different types and contents of ultraviolet absorbent were chosen to prepare ink samples respectively. Effects of type and content of ultraviolet absorbent on the fluorescence intensity and attenuation were discussed. The results showed that with increase of ethanol content and decrease of triethanolamine content, fluorescence intensity enhances significantly; ultraviolet absorbent UV-7292 has a little effect on fluorescence intensity and it can improve light resistance of the printing ink. On the premise of meeting other performances, when the content of ethanol, triethanolamine and ultraviolet absorber UV-7292 was 15%, 0. 6%, and 0. 5% respectively, UV fluorescent inkjet ink shows best luminescence property.