Waterborne epoxy modified acrylic resin silver paint using oily aluminum paste

Abstract

The invention relates to waterborne epoxy modified acrylic resin silver paint using oily aluminum paste. The silver paint is prepared from raw materials including, by weight, 30%-70% of waterborne epoxy modified acrylic resin, 10%-30% of deionized water, 0.5%-1% of a wetting agent, 2%-6% of a pH modifier, 0.5%-1% of a thickener, 5%-8% of a cosolvent, 3%-6% of amino resin and 5%-6% of the oily aluminum paste, and the sum of the weight percentage of the raw materials is 100%; and the cosolvent is a composition of ethylene glycol monobutyl ether and isopropyl alcohol. The prepared waterborne epoxy modified acrylic resin silver paint is low in price and has the excellent market competitiveness, the storage stability is longer than 6 months, the performance is excellent, the waterborne epoxy modified acrylic resin silver paint is resistant to water soaking, neutral salt mist and manual aging, and the VOC discharge is smaller than 60 g / L. The film formation temperature is low, and energy resources are saved.

Description

technical field [0001] The invention relates to the technical field of water-based silver powder paint, in particular to a water-based epoxy-modified acrylic resin silver powder paint using oily aluminum-silver paste and a preparation method thereof. Background technique [0002] Metal aluminum is an active amphoteric metal element, which is easy to react with water, acid and alkali, so when it is used in water-based resin system, it must go through special surface treatment. At present, the preparation method of water-based aluminum-silver paste on the market is roughly the addition of corrosion inhibitor, chromic acid or its salt passivation method. Inorganic silica coating method, inorganic-organic double-layer coating or hybrid coating method. These methods are undoubtedly aimed at isolating aluminum from water. But the water-based aluminum-silver paste in the market now has strict process requirements, so naturally, the price is generally high, more than three times t...

AI Technical Summary

Problems solved by technology

But the water-based aluminum-silver paste in the market now has strict process requirements, so naturally, the price is generally high, more than three times that of oil-based silver paint, and the production process is not skilled, resulting in extremely unstable products. Incomplete encapsulation, whether it is stored in the form of aluminum silver paste or in a water-based system, it will come into contact with water, causing the reaction Al+H 2 O→Al(OH) 3 +H 2 The occurrence of ↑ will affect the quality and performance of the coating and cause losses to customers

Images