影响塑料水性凹印油墨干燥性因素的研究

Study on the Influencing Factors of Dryness of Plastic Aqueous Gravure Ink

采用高速研磨分散方式制备了塑料水性凹印油墨基墨,合成了与基墨有良好相容性的水溶性树脂(调稀树脂),与助溶剂和助剂按一定比例混合制成了印刷用油墨样品。通过测试油墨样品的初干性和彻干性,探讨了油墨中水溶性树脂、助溶剂和助剂对油墨干燥性的影响。结果表明:调稀树脂种类对油墨干燥性具有一定影响;助溶剂的添加量对油墨干燥性影响较大,增加助溶剂添加量可以提高油墨干燥速度;适当添加一些助剂,可以有效改善油墨的干燥性;通过调节油墨体系的pH值、黏度等,也可改善油墨的干燥性。

Base ink of plastic aqueous gravure ink was prepared by means of high-speed grinding dispersal,water-soluble resin（dilute resin） that has good compatibility with base ink was synthesized,and sample of printing ink was made through mixing with latent solvent and auxiliary.Through testing the initial dry and positive dry of ink sample,the influence of water-soluble resin,latent solvent and auxiliary on the dryness of ink was discussed.The results show that the category of dilute resin has certain influence on the dryness of ink.The dosage of latent solvent has relatively great influence on the dryness of ink,and increase in the dosage of latent solvent can improve the drying rate of ink;appropriate addition of auxiliary can effectively improve the dryness of ink,which can also be improved by adjusting the pH value and viscosity of ink system,etc.