Bi-component epoxy zinc rich primer

Abstract

The invention discloses a dual-component epoxy zinc-rich primer with excellent mechanical performance of a coating layer, low construction cost, high efficiency and prominent anti-corrosion performance. The dual-component epoxy zinc-rich primer comprises A and B components; wherein, the A component comprises the following components by parts by weight: 14 parts of epoxy resin, 54 to 71 parts of zinc powder, 4 to 20 parts of filler, 1 to 3 parts of anti-settlement auxiliary agent and 9 parts of solvent; the B component comprises the following components by weight percentage: 40 percent curing agent and 60 percent solvent; and the mixture ratio by weight of the A component to the B component is 8:1 to 15:1. The dual-component epoxy zinc-rich primer has the advantages of low content of the zinc powder in a paint film, low cost, simple technology and no need of special equipment; the use of the dual-component epoxy zinc-rich primer can realize the curing at room temperature, the paint film has excellent adhesion, flexibility and anti-corrosion effect, the applicable period is long and can achieve 4 hours, the construction is convenient, and the dual-component epoxy zinc-rich primer can be applied in anti-corrosion primers of pipelines, plant facilities, ships, bridges and other steel structures.

Description

technical field [0001] The invention relates to a two-component epoxy zinc-rich primer, which can be used as an anticorrosion primer for steel structures such as pipelines, ships, bridges, and storage tanks. Background technique [0002] Metal corrosion is a very serious problem faced by people. It is roughly estimated that the annual loss of metal structures, equipment and materials due to corrosion is approximately equivalent to 20% to 40% of the metal output of the year, and more than 100 million tons of metals are scrapped due to corrosion every year in the world, and the economic loss accounts for 100% of the national total. 1.5% to 3.5% of the total economic output value. In China, the economic loss caused by metal corrosion is as high as 30 billion yuan per year, accounting for 4% of the gross national product. For a long time, people have used a variety of techniques to protect metals from corrosion. Among them, one of the most effective and commonly used methods ...

AI Technical Summary

Problems solved by technology

At the same time, due to the large proportion of zinc powder in the paint film, a large amount of zinc oxide mist will be produced during welding, which will have a certain impact on the health of the staff.