Application of polyurea anticorrosive coatings in the coating of steel structures and steel storage tanks!

The corrosion problem of steel structure involves all walks of life, such as a large number of pipelines, storage tanks, components and valves and other steel structures caused by corrosion caused by corrosion, not only caused huge economic losses to the national economy, but also to industrial production and the people Life brings great difficulties, so the use of anti-corrosion coatings is a very important measure to prevent metal corrosion.

Heavy-duty anti-corrosion materials refer to anti-corrosion materials that can be used for a long time in harsh corrosive environments, and their service life is generally more than fifteen years.
Traditional heavy-duty anti-corrosion materials include epoxy, glass fiber reinforced plastic, rubber, polyurethane, plastic and other varieties.
Although they have achieved relatively good results in practical applications, they still have poor anti-corrosion performance, easy leakage of joints, environmental pollution, and construction.
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Polyurea anticorrosive coating has excellent color retention, gloss retention, weather resistance, corrosion resistance and anti-pollution properties, can achieve medium and long-term anticorrosion functions, and can meet the protective effect of steel structures in the natural environment.
Polyurea anticorrosive coatings have a very wide range of application prospects, and are generally used in large-scale infrastructure construction, such as bridge decks, culvert frame structures, building and underground engineering waterproofing; concrete caps, bridge piers, and cast-in-place concrete track bed slabs for ballastless tracks , Durability protection of concrete bases and other concrete structures; anti-corrosion of steel and concrete structures in heavy corrosive environments such as marine and chemical industries.

The construction process of polyurea coatings is divided into: substrate treatment, primer spraying, polyurea anticorrosive coating spraying, inspection and acceptance.

Substrate treatment is the key to ensuring construction quality, and can be divided into metal substrate and concrete substrate.

Concrete substrate treatment, shot blasting the concrete precast parts, or use angle grinders, high-pressure water guns, etc.

After the primer is applied, it can be sprayed with polyurea at an interval of 6-12 hours to allow it to dry.

Before spraying, the surrounding environment should be considered, and the surrounding materials that may be contaminated should be covered with plastic film, and the surrounding environment should be protected.