OVOC and high-solid-content double-emulsion type waterborne epoxy coating for corrosion prevention

Abstract

The invention provides an OVOC and high-solid-content double-emulsion type waterborne epoxy coating for corrosion prevention. The coating is prepared from a component A and a component B in a weight ratio of (67.3-70.0): (30.0-32.7), The component A is prepared from the following components in parts by weight: 20 to 25 parts of waterborne epoxy resin HDE8123-WB; 0.1 to 0.2 part of a dispersing agent; 0.2 to 0.4 part of a defoaming agent; 0.4 to 0.6 part of polyamide wax slurry; 35 to 40 parts of albite powder; 3-4 parts of titanium dioxide; 0.1 to 0.3 part of color paste; and 3-5 parts of water; and the component B comprises the following components in parts by weight: 30.0-32.7 parts of a curing agent. The water-based epoxy coating provided by the invention is high in solid content (more than 70%), zero in VOC content, green and environment-friendly; the formula is simple and the cost is low; surface drying is fast, hard drying is fast, construction is convenient, and one-time film forming is thick; and the corrosion resistance is high, and the cold and hot cycle resistance is high.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a water-based epoxy coating of OVOC and high solid content double emulsion type used for anticorrosion. Background technique [0002] Paint, what we usually refer to as paint, is just one of them, which means that it can form a film on the surface of an object under certain conditions to protect, decorate or other special functions (insulation, rust prevention, mildew resistance, resistance heat, etc.), a class of liquid or solid material. Because most of the early paints used vegetable oil as the main raw material, they were also called paints; now synthetic resins have replaced vegetable oils, so they are called paints. Coatings are not liquid. Powder coatings are a large category of coatings. Coatings belong to organic chemical polymer materials, and the formed coating film belongs to the type of polymer compounds. According to the classification of modern chemical products...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, the national environmental protection situation is severe, and water-based coatings are the general trend. However, water-based coatings have their own limitations. For example, water-based acrylic polyurethane topcoats are not easy to be thickly coated, and thick coatings are prone to sagging, heat rash, and even lead to paint problems such as poor clarity. This is also a technical problem that has plagued the water-based coatings industry for a long time.

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