Water-based silver ink and preparation method thereof

Abstract

The invention discloses water-based silver ink and a preparation method thereof and belongs to the technical field of macromolecular compositions and preparation thereof. The water-based silver ink comprises the following components in parts by mass: 10-30 parts of silver paste, 30-50 parts of a waterborne binder, 0.5-5 parts of a wear-resistant agent, 0.2-2 parts of a wetting agent, 0.2-1 part of a defoaming agent, 10-20 parts of alcohol and 10-20 parts of water. The water-based silver ink selects water as a solvent, no VOC emission is caused in production and usage processes, harmful substance residues on the surface of a printing product are few, an operating environment is safe, the health of production personnel is guaranteed, and the production cost is low; and by adding auxiliaries such as the defoaming agent and the wetting agent in a water-based silver formula, the problems that the water wettability of the silver paste is poor, bloating, precipitating and caking phenomena of silver ink appear and deep printing drying is slow are effectively solved.

Description

Technical field [0001] The invention relates to the technical field of polymer composition and its preparation, in particular to an aqueous silver ink and a preparation method thereof. Background technique [0002] At present, metal inks used in the printing industry mostly use organic solvents, which have many disadvantages: a. When organic solvents are used, volatile organic solvents (ie VOCs) are emitted during production and use, resulting in serious environmental pollution and poor safety. Seriously threaten the health of production personnel; b. Metal inks with organic solvents have many harmful residues on the surface of the printed matter, and high safety hazards; c. Metal inks with organic solvents, due to the volatility of organic solvents, in order to ensure the ink during use Viscosity stability requires a large amount of organic solvents and high production costs. [0003] Water-based silver ink can solve the above problems well, but there are problems in the producti...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to propose a water-based silver ink and a preparation method thereof. Water is selected as a solvent, there is no VOC emission in the production and use process, there are few harmful substances on the surface of the printed matter, the operating environment is safe, and the production is guaranteed. Healthy personnel and low production costs; and by adding defoamers, wetting agents, wear-resistant agents and other additives into the water-based silver formula, it effectively solves the problem of poor water wettability of silver paste and silver ink swelling, precipitation and agglomeration Phenomenon, slow drying of deep plate printing, etc.