The solvent of water-based ink is mainly water, and there is no VOC emission in the use process, which effectively protects the health of printing operators and ink developers. It is an environment-friendly, pollution-free "green" printing material, and has become the focus and hotspot of current research in the field of printing materials. Because of its high surface tension, water-based ink has poor wetting and adhesion properties to low-energy surface materials; At the same time, the poor wettability of the pigment surface leads to the reduction of the dispersion of the pigment, which restricts its development. Therefore, the development of water-based ink plays an important role in promoting green printing.
Change the type and content of components in water-based pen ink to prepare samples, and study the effects of each component on the wettability, adhesion, drying speed and other properties of ink; The formula of water-based pen ink was optimized by formula test to prepare water-based pen ink with good comprehensive performance.
The factors influencing the dispersibility of water-based pigment ink-jet ink are discussed. On the premise that the dispersivity meets the requirements, dilute resins, surfactants and solvents of different types and contents are added to prepare ink-jet ink, and the surface tension, viscosity and other properties of the ink are tested; In order to prepare water-based ink-jet ink with good comprehensive performance, the formulation of ink-jet ink was optimized by formula test.