抄録
The optimization of aliphatic urethane diacrylate (AUD) oligomer in UV screen printing ink has been carried out using a mixture design based on multi-variable analysis. The physical properties and evaluations of the UV inks were examined on an acrylic sheet in ten formulations of varying quantity of propoxylated neopentyl glycol diacrylate (PPNGD) monomer, AUD oligomer, and phenyl bis (2,4,6-trimethylbenzoyl) -phosphine oxide (PBPO) photoinitiator. The optimal quantity range of three components in ink formulation was optimized by a multi-variable analysis, Minitab, on the exposure energy and scratch resistance of ink film. The printing qualities on an acrylic sheet were also investigated and compared with a commercial UV screen ink. It was confirmed that the observed value of the UV curing energy of the optimal ink formulation was close to the predicted value from the Minitab program. The UV screen printing ink required a higher curing energy to form its ink film. However, it had higher light-fastness and scratch resistance than that of the commercial ink. Thus, a UV screen printing ink consisting of AUD with high light-fastness was successfully formulated.
