Development Of Ultraviolet Light Curing Water-Based Ink

In order to solve the problem of toxic residual monomers and UV inks in the existing inks is slow in curing rate and high in the energy consumption.To meet the market demand,it has developed a ultraviolet light curing water-based ink with excellent environmental performance and comprehensive performance.According to the principle of photocuring and the basic theory of ink,screen the types and dosage ranges of prepolymers,dyes,photoinitiators and photoactivators based on indicators such as ink viscosity,curing rate and component content with the single factor optimization method.The optimum ratio of each component of the ink was obtained by orthogonal test.And make a comprehensive analysis to the performance of the ink.The experimental results show that:Use a mixture of waterborne urethane acrylate and polyester acrylate as prepolymer,preparation of the binder of the water-based UV-curable ink.It is excellent in viscosity and curing rate when the prepolymer is a mixture of waterborne polyurethane acrylate and polyester acrylate,and the mass ratio of waterborne polyurethane acrylate and polyester acrylate is 3:4;Photoinitiators,pigments and auxiliaries were screened by orthogonal experiments.In many photoinitiators,When 2,4,6-trimethylbenzoyldiphenylphosphine oxide was screened as photoinitiator,it has the best light triggering effect and the fastest curing rate.Dyes are reactive dyes(cyan,magenta,yellow,black);The additives are leveling agent,defoaming agent,photoactivator,surfactant,etc.When the ratio of prepolymer is different in the ultraviolet light curing water-based ink,it can meet the needs of different printing methods such as screen printing,flexo printing and gravure printing.At the same time,the printing effect is good,the efficiency is high,the energy consumption is low,which has a good promotion prospect.