Abstract
In order to study the influence of pH value on the plastic water-based gravure ink, the primary ink that is dispersed by high-speed grinding is maxed with good- compatible water-based resin (solution resin) and promoter in proportion. Getting the different pH value of ink samples by two methods, one way is the Amine neutralizers were added in the ink samples, the other is alkaline substances of the ink samples were volatilized by raising temperature. The influence of the pH value to the property of ink was analyzed by testing the pH value, viscosity, stetting, and glossiness of the proofs. The result indicates that changing the pH value of ink will affect the viscosity of ink. The pH value can influent the release of the resin in the ink to the solvent, so the dryness of ink was also influenced. The pH value of water-based ink has a certain influence to the glossiness of the proofs.
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