Preparation Of Nano Inkjet Layer And Its Wettability

The color inkjet paper has been greatly developed because of its bright colors and good inkjet printing quality. In the color inkjet paper, the performance of the inkjet layer directly determined the printing quality of the color inkjet paper. In this paper, a inkjet layer with good ink absorption and surface quality was prepared using nano SiO₂ and PVA.Firstly, the nano ink-jet layer was prepared with SiO₂ A200, PVA B-33 and silane coupling agent with a hishear. The factors that influence inkjet layer surface such as the content of boric acid, the primer and the process of exhausting bubble were studied in the experiment. The factors that affect the ink absorption of the inkjet layer such as the proportion of the dispersant, the ratio of the pigment and the adhesive, the weight of inkjet layer were researched through lots of experiments. The factors that influence the viscosity of the painting were also studied. Finally the optimal formula and conditions were found, and the inkjet layer with good ink absorption and surface quality was prepared.Secondly, inkjet layers prepared by SiO₂ with different specific surface area were researched. Their printing quality, surface topography and wettability were studied. EPSON inkjet layer, Shanfu inkjet layer and inkjet layer prepared by A200 nano SiO₂, inkjet layers prepared by A200, A300, A380 from deguss corporation were compared in the experiment, such as their ink absorption, SEM, AFM, fluid permeability, dynamic contact angle, surface energy, the rate of adsorption and sdsorption amount. The conclusions are: the printing quality and surface topography of the inkjet layer from home and abroad are similar. As to their fluid permeability, Shanfu inkjet layer>A200 inkjet layer>EPSON inkjet layer. The surface energy, the adsorption amount and the rate of sdsorption of the self-prepared A200 inkjet layer are higher than the Shanfu inkjet layer. The A200 inkjet layer has moderate surface energy, rate of adsorption, adsorption amount and printing quality. Because of its moderate size and surface area, A200 is suited to be the pigment of the inkjet coating layer.