A kind of water-based aluminum silver paste for printing water-based silver ink and preparation method thereof

Abstract

The invention relates to a water-based aluminum-silver paste for printing water-based silver inks and a preparation method thereof. The water-based aluminum-silver paste comprises the following components and contents in parts by weight: 60-80 parts of aluminum powder pigment, 2-4 parts of aluminum powder surface protective agent and 20-40 parts of water; the preparation method comprises placing the aluminum powder pigment and the aluminum powder surface protective agent in a ball mill by weight, and ball milling to obtain a material with uniform particle size; the prepared material is transferred to a planetary mixer In the process, add a certain amount of water according to the weight part content, fully stir, potting and packaging, that is, the water-based aluminum silver paste product for printing water-based silver ink is obtained. Compared with the prior art, the present invention adopts aluminum powder surface protective agent, which can be applied to most water-based resin systems, and is suitable for producing different printing water-based silver inks. It has a wide range of applications, safe and reliable sources of raw materials, simple preparation methods, and production process control. The method is convenient and low in cost, and can be used in industrial scale and high-efficiency large-scale production.

Description

technical field [0001] The invention belongs to the technical field of printing, and relates to a water-based aluminum-silver paste for printing water-based silver ink and a preparation method thereof. Background technique [0002] Aluminum silver paste is a kind of aluminum metal pigment, which can bring decorative and protective effects in coatings, inks and paints. Aluminum silver paste has become the most widely used and researched metallic pigment due to its unique metallic luster effect, angle-dependent color effect, optical effect and suspension characteristics. At present, in the ink industry worldwide, solvent-based silver ink accounts for a major share, and it is also the largest source of pollution in the printing industry. Because solvent-based silver ink is mainly composed of binders, fillers, additives and other substances, which contain about 50-70% of organic solvents, long-term contact will damage the skin of the human body, and at the same time, passive in...

AI Technical Summary

Problems solved by technology

The water-based aluminum-silver paste composition prepared by the above-mentioned patent is mainly used for water-based coatings, and propylene glycol methyl ether or ethylene glycol butyl ether is used as the water-based solvent, which is not conducive to further cost reduction compared with water as the solvent; the preparation method Mixing and dispersing is mainly carried out by controlling the stirring speed. Although the method is relatively simple, the dispersion stability of the aluminum-silver powder in the prepared water-based aluminum-silver paste composition is difficult to grasp and needs further improvement.