Aqueous aluminum paste for aqueous silver printing ink and preparation method therefor

Abstract

The invention relates to an aqueous aluminum paste for aqueous silver printing ink and a preparation method therefor. The aqueous aluminum paste comprises the following ingredients, by weight, 60-80 parts of aluminum powder pigments, 2-4 parts of aluminum powder surface protective agents and 20-40 parts of water. The preparation method comprises steps: aluminum powder pigments and aluminum powder surface protective agents are placed in a ball milling machine by weight parts, ball milling is carried out, and a material with a uniform particle size is prepared, the prepared material is transferred to a planetary stirrer, quantitative water is added by weight parts, the mixture is stirred fully, filling and packaging are carried out, and an aqueous aluminum paste product for printing aqueous silver printing ink is prepared. Compared with the prior art, the aqueous aluminum paste employs the aluminum powder surface protective agents, can be suitable for most aqueous resin systems, and can be used for producing different kinds of aqueous silver printing ink. The application scope is wide, the raw material resource is safe and reliable, the preparation method is simple, the production technology is convenient to control, the cost is low, and the preparation method can be used for industrial scale and high-efficiency 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.