How to choose water-based acrylic resin for water-based ink?

First of all, let us understand how the water-based acrylic resin used in the water-based ink works in the ink. There are the following aspects:






1. As a film-forming material of water-based ink, it can stick the pigment on the surface of the substrate, giving the ink a considerable body;
2. It can make the ink have sufficient leveling, spreadability and smooth gloss on the surface of the substrate;
3. The water-based acrylic resin used in water-based inks is an efficient wetting agent and abrasive;
4. It can provide the dispersion performance and printability of the coating;
5. The water-based acrylic resin used in water-based ink can increase the printing and resolubilization performance of the coating.

After understanding the role of water-based acrylic resins for water-based inks, the next step is to choose the right water-based acrylic resins for water-based inks. In industrial manufacturing, we should look from the perspective of dispersion. The water-based acrylic resin used in water-based inks should first have the best dissolved state, which is conducive to dispersing the functional groups of the resin, thereby adsorbing on the surface of the pigment particles and forming a thick protective layer. The prepared water-based ink has sufficient leveling and spreading power, and is convenient to form a uniform ink film.

Secondly, the solid content and viscosity of the water-based acrylic resin used in water-based inks should be controlled, because the size of the solid content affects the fast-drying and gloss brightness of the resin. The larger the solid content, the higher the gloss of the resin and the fast-drying. It is also good; and the viscosity of the water-based acrylic resin used in the water-based ink reflects the relative molecular weight of the resin and the size of the interaction between the molecular chains to a certain extent, so the relative molecular weight of the water-based acrylic resin used in the water-based ink also affects The pigment dispersibility and water solubility of the resin. If the molecular weight is large, the viscosity of the water-based acrylic resin used in the water-based ink will be greater, so that the pigment is not easily dispersed in it, and due to the relatively long molecular chain, the water solubility will be relatively poor. Therefore, in inks and varnishes, water-based acrylic resins for high-solid and low-viscosity water-based inks should be used as much as possible. Its low viscosity can not only disperse and wet the pigments, but also contain high solid content. Make the product have a high gloss, reduce the amount of water evaporation, and to ensure the quality of the water-based acrylic resin used in the water-based ink, it is also necessary to ensure that the resin has a high light transmittance, so as to ensure the transparency of the film. And gloss.