Four main system classifications of water-based anti-corrosion coatings.

Water-based anti-corrosion coatings mainly include water-based inorganic zinc-rich coatings, water-based epoxy coatings, water-based acrylic coatings and water-based polyurethane coatings four categories.
, water-based inorganic zinc-rich coatings
water-based inorganic zinc-rich coatings are generally divided into self-curing inorganic zinc-rich and post-curing inorganic zinc-rich two categories. Currently widely used in the market is water-based self-curing inorganic zinc-rich

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characteristics of water-based inorganic zinc-rich coatings:
1, fast drying speed, at a relative humidity of 20 degrees C and 75%, about 1h finger drying;
2, the coating has good electrostitive conductivity and excellent welding performance,
3, excellent corrosion resistance, always resist pH within the range of 5.5 to 10.5 chemical corrosion, in the ocean atmosphere environment, water-based inorganic zinc-rich coating application life of up to 25a;
4, can always withstand 400 degrees Celsius high temperature;
5, clean and environmental protection, water as a thinner and cleaning agent, volatile organic matter for 0, environmental friendliness;
6, water-based inorganic zinc-rich coating also has shortcomings, mainly in the dry film contains a large number of zinc powder, resulting in a coating porous;
water-based inorganic zinc-rich coatings are suitable for long-lasting corrosion protection in marine platforms, ships, containers, large steel components, pipelines, and various chemical tank linings in various environments such as ocean platforms, ships, containers, etc.
II, water-based epoxy coatings
water-based epoxy coatings are mainly water-evacuating epoxy coatings, composed of hydrophobic epoxy resin and hydrophobic curing agent two components.
Water-based epoxy coating system has the following characteristics:
1, in steel, concrete, aluminum and other substrate surface has excellent adhesion, coating film with high hardness, good wear resistance, corrosion
resistance and excellent chemical resistance characteristics;
3, fast-drying, in 20 degrees C and 75% relative humidity, the general 2h can reach the finger dry, very low curing temperature of
15 degrees C;
now commercialized water-based epoxy anti-corrosion coatings are: water-based iron epoxy red primer, water-based zinc epoxy phosphate primer, water-based epoxy zinc-rich primer and water-based epoxy cloud iron intermediate paint.
III, water-based acrylic coatings
water-based acrylic coatings refers to the main acrylic co-polymer as a base material, water as an evacuation agent, and then add pigments, additives and other ingredients made, acrylic co-polymer by methyl acrylates, acrylates and acrylic synthesis, it is divided into hydro-lactate, water-soluble and hydrolytic acrylic coatings according to the status of the resin in water.
water-based acrylic anticorrosive coating system has the following characteristics:
1, water-based acrylic paint has good weather resistance, UV resistance, water resistance, not yellowing. After 45min can reach hard dry, after 2h can be re-coated, can be applied at as low as 5 degrees C;
2, water-based acrylic paint can be water-based epoxy or acrylic primer, medium paint matching, can also be used for solvent-based coating on the top, the formation of a composite coating system;
3, excellent corrosion resistance, good color preservation, water as a thinner and cleaning agent, non-flammable and safe;
4, water-based acrylic coating also exists hard, solvent resistance and other problems.
water-based acrylic coatings are widely used, can be used in equipment industry, automobiles and other platforms, has become a large system in anti-corrosion coatings.
, water-based polyurethane coatings
water-based polyurethane coatings with water-based polyurethane resin as the base material, water, pigments, additives and other preparations.
water-based polyurethane anti-corrosion coating has the following characteristics:
1, particle size is less than 0.1nm, with better evacuation stability;
2, the production of low, safe non-incineration, non-pollution of the environment, not easy to damage the surface of the coating, easy to operate and modify;
3, wood, fiberboard, plastic film, metal, glass and leather have good adhesion;
4, water-based polyurethane coatings still exist film-forming time, paint coatings with hydro-based groups caused by poor water resistance, paint film easy to produce bubbles, raw material costs and other shortcomings.
water-based polyurethane anti-corrosion coatings are mainly used as anti-corrosion paint, widely used in railway locomotives, bridges, automobiles, wood furniture, equipment decoration and other coatings.
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