What are the types of anticorrosive coatings? What are the types of anticorrosive paint?

Zhisheng Weihua special functional flue gas anticorrosive coating] coating has been successfully applied, the coating has high temperature flue gas resistance, chimney flue condensate corrosion effect, high temperature resistance, high hardness and wear resistance, acid and alkali resistance, anti-tar adhesion, good expansion coefficient, and can be used for more than 10 years. 1. ZS-1041 flue gas anticorrosive coating: high temperature resistance:

The base material and filler of flue gas anticorrosive coating are composed of inorganic substances with high temperature resistance, and the long-term heat resistance can reach 600, and the short-term temperature can reach 850. 2. ZS-1042 desulfurization special anticorrosive coating: desulfurization tower anticorrosive coating has excellent acid and alkali anti-corrosion resistance, anti-permeation performance, excellent corrosion resistance to corrosive sewage, strong acid, strong alkali, salt, etc., the solid content of the coating is extremely high, and the coating is impact and anti-erosion corrosion, which can be achieved by one coating.

The temperature resistance can be reached....

Anti-corrosion coating refers to a type of liquid or solid material coated on the surface of an object that can form a thin film under certain conditions for protection, decoration or other special functions (insulation, rust prevention, mildew resistance, heat resistance, etc.). Because most of the early coatings used vegetable oil as the main raw material, they were also called paints. Nowadays, synthetic resins have largely or completely replaced vegetable oils, so they are called coatings.

There are three main functions: protect, decorate, and cover up the defects of the product and enhance the value of the product.

Main type: epoxy anti-corrosion coatings.

Epoxy anti-corrosion coatings are usually composed of two components: epoxy resin and hardener. The properties of the hardener also affect the properties of the paint film. Commonly used curing agents are:

Fatty amines and their modifiers are characterized by curing at room temperature, unmodified aliphatic amines are more toxic, aromatic amines and their modifiers are characterized by slow reaction, often need to be heated and cured, and the toxicity is weak, perchloroethylene paint, polyamide resin, characterized by good weather resistance, less toxicity, good elasticity, slightly worse corrosion resistance, phenolic resin, urea-formaldehyde resin and other synthetic resins.

Grease paints. Oil and grease coatings are a type of coatings with dry oil as the main film-forming substance. It is characterized by easy production, good brushability, good wettability to the surface, low price, flexible paint film, but the paint film dries slowly, the film is soft, the mechanical properties are poor, and the acid and alkali resistance, water resistance and organic solvent resistance are poor.

Dry oil is often combined with anti-rust pigments to form anti-rust paint, which is used in the atmospheric environment with low corrosion resistance requirements, and raw lacquer, also known as national paint and lacquer, is one of China's specialties.

Raw lacquer. Lacquer is a milky white viscous liquid that flows out of the bark of a growing lacquer tree, which is filtered through a muslin cloth to remove impurities. After it is applied to the surface of the object, the color quickly changes from white to red, from red to purple, and after a long time, it can turn into a hard and bright black paint film.

Urateol is the main component of lacquer, with a content of 30% to 70%. Generally speaking, the higher the urushiol content, the better the quality of lacquer. The raw lacquer has strong adhesion, tough paint film, good luster, it is resistant to soil corrosion, and is more resistant to water and oil.

The disadvantage is that it is toxic and easy to make people allergic. In addition, it is not resistant to strong oxidizing agents and has poor alkali resistance.

Modified raw lacquer latex paint.

Now there are a lot of modified raw lacquer emulsion paints, which overcome the above shortcomings to varying degrees: mainly alcohol-soluble phenolic resins, modified phenolic resins, pure phenolic resins, etc. Alcohol-soluble phenolic resin coatings have good corrosion resistance, but the construction is inconvenient, the flexibility and adhesion are not very good, and the application is limited to a certain extent.

Therefore, phenolic resins often need to be modified. For example, rosin modified phenolic resin and tung oil refining, plus a variety of pigments, grinding can be made of various magnetic paints, its paint film is tough, low-cost, widely used in furniture, doors and windows coating. Pure phenolic resin coating has strong adhesion, water resistance, damp heat resistance, corrosion resistance, and good weather resistance.

Epoxy resin coating: epoxy coating has good adhesion, excellent adhesion to metal, concrete, wood, glass, etc., alkali, oil and water resistance, and excellent electrical insulation performance. But the aging resistance is poor.

According to the type: epoxy anticorrosive coatings, acrylic anticorrosive coatings, polyurethane anticorrosive coatings, inorganic anticorrosive coatings, polysiloxane anticorrosive coatings, chlorinated rubber anticorrosive coatings, high chlorinated polyethylene anticorrosive coatings, vinyl anticorrosive coatings, high temperature resistant anticorrosive coatings, fluorocarbon anticorrosive coatings, special anticorrosive coatings (interpenetrating network, cyanide, TO, cold spray zinc, FVC, polyurea, etc.) By application:

Pipeline anti-corrosion, ship anti-corrosion, industrial anti-corrosion, steel frame anti-corrosion, various metal anti-corrosion, offshore platforms, petroleum and petrochemical, power grids, sewage treatment, factory floors, thermal power and nuclear power, machinery and equipment, municipal bridges, coal metallurgy, public facilities, railway stations, airports, cultural and sports centers, etc. When it comes to steel structures and concrete, it is possible to use those that need to be anti-rust and anti-corrosion.

Anti-corrosion coatings can be used under harsh conditions, and have a long-term anti-corrosion life, heavy anti-corrosion coatings can generally be used for more than 10 or 15 years in the chemical atmosphere and marine environment, even in acid, alkali, salt and solvent media, and under certain temperature conditions, can be used for more than 5 years. Thick film is an important sign of heavy anticorrosive coatings. Generally, the dry film thickness of anticorrosive coatings is about 100 m or 150 m, while the dry film thickness of heavy anticorrosive coatings is more than 200 m or 300 m, and there are 500 m and 1000 m.

According to the revised version of the American NACE standard [PR-01-76 (1983), the corrosion resistance of the ZS-711 coating was evaluated, and the results successfully passed the test of 4000H salt spray test and 4000H damp heat test. The coating has weather resistance, anti-aging, anti-radiation, abrasion resistance, impact resistance, high temperature resistance (400 600), low temperature (-60), and stable conductivity; Its resistivity can meet the requirements of anti-static and ensure the long life of the coating.

The main classifications are:

Epoxy resin paint: thick film epoxy zinc-rich primer, epoxy micaceous iron antirust paint, epoxy glass flakes, epoxy coal asphalt paint, epoxy floor paint.

Vinyl chloride paint: primer, topcoat, machine tool paint, hammer paint, fireproof paint, anticorrosive paint, varnish, perchloroethylene putty.

Chlorinated rubber paint: chlorinated rubber topcoat of various colors, chlorinated rubber aluminum powder anti-rust primer, chlorinated rubber anti-rust primer, chlorinated rubber iron red aluminum powder anti-rust paint, chlorinated rubber ship bottom antifouling paint.

Acrylic paint: acrylic polyurethane overlay varnish, various colors of acrylic polyurethane enamel, acrylic road marking paint.

Fluorocarbon paint: various colors of fluorocarbon anticorrosive coatings, metal fluorocarbon paints, fluorocarbon exterior wall coatings.

Alkyd paint: mica iron oxide alkyd antirust paint, various colors of alkyd hull paint, various colors of alkyd magnetic paint.

Silicone high-temperature paint: all kinds of silicone self-drying paint, all kinds of silicone drying paint, silicone high-temperature insulating paint, aluminum powder high-temperature paint, muffler high-temperature paint.

Solvent-free anti-corrosion coatings: solvent-free epoxy glass flake heavy anti-corrosion coatings, solvent-free epoxy coal asphalt coatings, solvent-free pipeline inner wall drag reduction coatings, solvent-free self-leveling floor paints.

Special anticorrosive coatings: ethylene phosphate primer, inorganic zinc-rich primer, water-based inorganic zinc-rich primer, glass paint, template paint.

There are many types of anticorrosive paint, which can generally be divided into: epoxy anticorrosive paint, polyurethane anticorrosive paint, acrylic anticorrosive paint, inorganic anticorrosive paint, perchloroethylene anticorrosive paint, chlorinated rubber anticorrosive paint, high chlorinated polyethylene anticorrosive paint; According to the use, it can be divided into: anticorrosive paint for pipelines, anticorrosive paint for ships, anticorrosive paint for metal, anticorrosive paint for furniture, anticorrosive paint for automobiles, anticorrosive paint for rubber; According to the solvent, it can be divided into:

Water-based anticorrosive paint, oil-based anticorrosive paint.

Anticorrosive paint is a mixture of a variety of hydrous silicate minerals, and the main chemical groups are two oxides, ALO and SIO. ALO is mainly used in clay minerals, and SIO is derived from particulate quartz in addition to clay minerals. The closer the ALO content and ALO SIO ratio are to the theoretical values of kaolinite minerals, the higher the purity of this type of clay.

Characteristics: It can be used under harsh conditions, and has good durability and weather resistance, and can be used for more than 10 or 15 years under harsh conditions such as marine and underground, even in acid, alkali, salt and solvent media, and under certain temperature conditions, it can be used for more than 5 years.

Before the construction of anticorrosive paint, we must pay attention to two points, the danger of endangering human health; ** Dangers. It is important to understand the safety regulations of the product before applying the paint. For example, Jinnuoxin acrylic engineering primer and Jinnuoxin acrylic engineering topcoat, although there is only a word difference, the function is similar, but in the proportion, use and need to pay attention, once there is an accident, it will endanger human health.

There are various types of anticorrosive paints, divided according to the field of application, including:

Bridge paint, steel structure paint, mechanical equipment paint, wind power paint, container paint, storage tank paint, pipeline paint, automobile paint and so on.

It can also be divided according to the type of paint resin, including:

Epoxy paint: epoxy primer, epoxy topcoat, epoxy intermediate paint, epoxy micaceous iron intermediate paint, epoxy coal asphalt paint, epoxy phenolic paint, epoxy glass flake paint, epoxy zinc phosphate primer.

Polyurethane paint: polyurethane topcoat, polyurethane primer, acrylic polyurethane topcoat.

Alkyd paint: alkyd antirust paint, alkyd magnetic paint, alkyd blending paint, alkyd primer.

Fluorocarbon paint: fluorocarbon topcoat, fluorocarbon metallic paint, fluorocarbon baking paint.

Acrylic paint: acrylic topcoat, acrylic metallic paint, acrylic primer.

Zinc-rich primer: epoxy zinc-rich primer, inorganic zinc-rich primer, cold galvanized paint.

Other anticorrosive paints: chlorinated rubber paints, perchloroethylene paints, high chlorinated polyethylene paints, epoxy vinyl paints, polysiloxane topcoats.

The application of anticorrosive paint needs to analyze the working conditions, coating facilities, corrosion factors, etc., and select a reasonable supporting system.

1. According to the composition, it can generally be divided into: epoxy anticorrosive paint, polyurethane anticorrosive paint, acrylic anticorrosive paint, inorganic anticorrosive paint; perchloroethylene anticorrosive paint, chlorinated rubber anticorrosive paint, high chlorinated polyethylene anticorrosive paint;

2. According to the use, it can be divided into: anticorrosive paint for pipelines, anticorrosive paint for ships, anticorrosive paint for metal, anticorrosive paint for furniture, anticorrosive paint for automobiles, and anticorrosive paint for rubber;

3. According to the solvent, it can be divided into: water-based anticorrosive paint, oil-based anticorrosive paint;

Anti-corrosion materials are usually for metal structures, and for metal materials, they are usually materials with good acid and alkali corrosion resistance, such as polyurethane acrylic waterproof materials can be ......

Anticorrosive coatings are generally divided into conventional anticorrosive coatings and heavy anticorrosive coatings.

Conventional anticorrosive coatings are used to prevent corrosion of metals and protect the life of non-ferrous metals under general conditions;

Heavy anticorrosive coatings refer to a type of anticorrosive coatings that can be applied in relatively harsh corrosive environments and can achieve a longer protection period than conventional anticorrosive coatings.

There are many types of anticorrosive coatings, which can generally be divided into: epoxy anticorrosive paint, polyurethane anticorrosive paint, acrylic anticorrosive paint, inorganic anticorrosive paint; perchloroethylene anticorrosive paint, chlorinated rubber anticorrosive paint, high chlorinated polyethylene anticorrosive paint;

According to the use, it can be divided into: anticorrosive paint for rubber, anticorrosive paint for pipeline, anticorrosive paint for furniture, anticorrosive paint for ships, anticorrosive paint for metal, anticorrosive paint for automobiles;

According to the solvent, it can be divided into: water-based anticorrosive paint, oil-based anticorrosive paint; Our company mainly uses anticorrosive paint for pipes.

When choosing an anticorrosive coating, you need to understand its type and function. What are the types of anticorrosive coatings? PChouse will take you to find out.

1. Epoxy resin anticorrosive coating.

Epoxy resin has excellent water resistance, chemical resistance (acid, alkali and organic solvent resistance), stable storage, particularly good adhesion, suitable for the coating of steel structures in serious corrosive environments such as offshore, coast, industrial areas, etc., especially suitable for the coating of the inner surface of various storage tanks. According to the different curing agents, modified resins and application forms, epoxy resin anti-corrosion coatings are usually divided into epoxy ester anti-corrosion coatings, amine-curing epoxy anti-corrosion coatings, resin modified epoxy anti-corrosion coatings, new epoxy anti-corrosion coatings and other modified epoxy anti-corrosion coatings.

2. Polyurethane anticorrosive coating.

Polyurethane coating is a kind of coating with polyurethane resin as the base material and pigments, fillers and other auxiliary materials. Polyurethane coatings are highly adaptable to a variety of application objects and environments, and can be applied in wet environments and substrates, as well as cured at low temperatures. These coatings are available in polyether, polyester, epoxy and acrylic two-component polyurethane coatings, as well as one-component moisture-curing polyurethane coatings.

3. Zinc-rich resin anticorrosive coating.

Paints that contain a lot of zinc powder are called zinc-rich paints. Zinc-rich coatings include inorganic and organic types, inorganic zinc-rich coatings use alkyl silicate esters and alkaline silicates as base materials, and organic zinc-rich coatings mainly use epoxy resin as base materials. The former has excellent anti-rust and adhesion effects on metals, and is superior to the latter in terms of heat resistance, electrical conductivity, and solvent resistance.

4. High solid anticorrosive coatings.

In ordinary anticorrosive coatings, generally contain about 40% volatile components, most of these coatings are organic solvents, which will volatilize into the atmosphere after construction, which not only causes coating defects, can not meet anti-corrosion requirements, but also pollutes the environment. Therefore, reducing its volatile components and improving the solid content of coatings is a new research and development direction for coating development.