Anti-aging water-based copper-zinc alloy powder and manufacturing method thereof

Abstract

The invention discloses an anti-aging water-based copper-zinc alloy powder. A copolymerization method is used for cladding modification on copper-zinc alloy powder; and acrylic acid, styrene and trimethylolpropane trimethyl acrylate as monomers and other effective additives are subjected to a copolymerization reaction at 80 DEG C to coat a copolymer film containing benzene ring and carboxyl on the surface of the flake copper-zinc alloy powder, the shell formed on the surface not only shields the copper-zinc alloy powder, enhances its corrosion resistance, but also changes the nature, functional properties and surface chemical reaction properties of the charges on the surface of the copper-zinc alloy powder; the copper-zinc alloy powder can be used in water-based ink, has the advantages of bright color, aging resistance, long service life, low cost and high yield, and is very suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of metal powder material preparation, in particular to an anti-aging water-based copper-zinc alloy powder and a preparation method thereof. Background technique [0002] Copper-zinc alloy powder, also known as imitation gold-copper alloy powder, commonly known as "copper gold powder", is a scale-shaped alloy powder made of copper and zinc as the main raw materials through special processing and surface chemical treatment. It has good light reflection effect , The metal color is lifelike like gold, bright and durable, and has the characteristics of good dispersion and strong adhesion, and is widely used in the packaging and printing industry. At present, the inks commonly used in this industry use toxic organic reagents such as benzene and ether as solvents, and the organic volatile content is 30% to 70%, which causes environmental pollution and damages human health. With the strengthening of people's awaren...

AI Technical Summary

Problems solved by technology

However, due to the small particle size, large specific surface area, large number of surface atoms, and high activity of copper-zinc alloy powder, it is easy to react with acid, alkali, water, oxygen, etc. in the environment, so that the pigment will deteriorate and lose its original metal. luster

At the same time, copper-zinc alloy powder often has the problem of oxidative discoloration in high-temperature and high-speed printing processes, so it is necessary to improve its high-temperature oxidation resistance. To solve the above problems, it is necessary to modify the surface of the existing copper-zinc alloy powder to improve the copper-zinc alloy The acid resistance, alkali resistance, weather resistance, high temperature resistance and other properties of the powder provide the possibility to realize the transformation of copper-zinc alloy powder from solvent-based ink to water-based ink