Heavy duty anti-corrosion paint (coating) refers to a type of anti-corrosion coating that can be applied in relatively harsh corrosive environments compared to conventional anti-corrosion coatings, and has a longer protection period than conventional anti-corrosion coatings. It is often used in special industries, such as ship manufacturing, underwater engineering, marine engineering, energy industry, and other industries with high anti-corrosion requirements.

Heavy anti-corrosion coatings generally have two characteristics:

1. It can be used under harsh conditions and has a long-term anti-corrosion life. Heavy-duty anti-corrosion coatings can generally be used for 10 or more years in atmospheric and marine environments, even in acid, alkali, salt, and solvent media, and under certain temperature conditions, they can still be used for more than 5 years.

2. Thick film coating is an important symbol of heavy-duty anti-corrosion coatings. The coating dry film thickness of general anti-corrosion coatings is 100 μ M or 150 μ About m, while the dry film thickness of the heavy-duty anti-corrosion coating is around 200 μ M or 300 μ Above m, there are still 500 μ m～1000 μ m. Even up to 2000 μ m。 The thick anti-corrosion coating provides a reliable guarantee for the long-term service life of the coating. In order to achieve long-term anti-corrosion purposes, there are high requirements for the main film-forming substance synthetic resin. Due to the unique nature of the coating industry, synthetic resins must have good adhesion to the substrate and excellent corrosion resistance to various media, such as chemical atmospheres, salts, alkalis, and other solvents. For example, the epoxy resin used in ordinary anti-corrosion coatings has problems such as poor weather resistance and easy pulverization, while heavy-duty anti-corrosion coatings are modified by using chlorosulfonated polyethylene rubber and adding other components, and improved into epoxy heavy-duty anti-corrosion coating products according to different corrosion environment requirements.

Generally speaking, the types of heavy-duty anti-corrosion coatings are generally divided into epoxy resin paint, perchloroethylene paint, chlorinated rubber paint, acrylic paint, fluorocarbon paint, silicone high-temperature resistant paint, and special anti-corrosion coatings.

Epoxy resin paint

It is a coating with epoxy resin as the main film-forming material. Strong adhesion, excellent chemical resistance, corrosion resistance, water resistance, thermal stability, and electrical insulation, widely used in construction, chemical industry, automobiles, ships, electrical insulation, and other fields. This paint will lose its luster and powder when exposed to outdoor sunlight, making it suitable for use as a primer.

Perchloroethylene paint

It is a new * grade rubber waterproof coating, adding epoxy resin and resin groups to make this product more multifunctional and environmentally friendly, giving the new product more waterproof, anti-corrosion, moisture-proof, mold proof and other effects. Listed as a promotional product by the Ministry of Construction, it has a long lifespan and is easy to construct. It has a lifespan of over 50 years after long-term immersion in water.

Chlorinated rubber paint

It has good adhesion, chemical corrosion resistance, fast drying, anti permeability, and flame retardancy. Chlorinated rubber anti-corrosion coatings are widely used in building coatings, chemical anti-corrosion coatings, flame retardant coatings, ship and marine steel structure anti-corrosion coatings, and are listed as two major systems of anti-corrosion coatings in the world today, alongside room temperature curing epoxy resin coatings.

Acrylic paint

Excellent weather resistance; The decorative performance of the paint film is good (full, bright, and high hardness); Good chemical resistance; Excellent light and color retention performance; Adhesion, good mechanical properties. Used for various types of transportation vehicles, construction machinery, instruments and equipment, and other surface decoration items, especially suitable for outdoor use.

Fluorocarbon paint

It has excellent anti-corrosion performance - thanks to its excellent chemical inertness, paint film resistance to chemicals such as acid, alkali, salt, and various chemical solvents, providing a protective barrier for the substrate. The paint film is tough, with high surface hardness, impact resistance, buckling resistance, and good wear resistance, demonstrating excellent physical and mechanical properties.

Organic silicon high-temperature resistant paint

Water resistance: No foaming, wrinkling, or peeling after 24 hours.

Special anti-corrosion coating

*Strong corrosion resistance. Capable of withstanding corrosive media such as strong acids, alkalis, strong solvents, salts, petroleum products, and hydrocarbons under high temperature conditions for a long time. The coating has strong adhesion, good resistance to dry wet alternation, good adhesion to the substrate (steel, cement, wood), good wear resistance, impact resistance, and good elasticity.

Compared to conventional anti-corrosion coatings, heavy-duty anti-corrosion coatings are applied in special fields with high technical content and difficulty, involving many aspects of technological progress and product development. It no longer relies excessively on the knowledge and experience of coatings, but more on the knowledge and intersection of multiple disciplines such as electronics, physics, ecology, machinery, instruments, and management. The synthesis of high corrosion resistant resins, the application of effective dispersants and rheological additives, the development of new corrosion resistant and impermeable pigments and fillers, the application of advanced construction tools, construction maintenance techniques, on-site testing techniques, etc., all need to be comprehensively applied to heavy-duty anti-corrosion coatings and coatings. Because of this, the standards for the use of heavy-duty anti-corrosion coatings are strict and cannot be simply mixed and used like ordinary coatings. In the process of use, if there are any errors, the consequences can be immeasurable. The development level and performance of heavy-duty anti-corrosion coatings have become a symbol of a scientific and technological level, and a symbol of measuring the advanced technology of anti-corrosion coatings.