What are the types of antirust coatings? Which anti rust paint is better

Types of anti-rust coatings:

1. Hongdan anti-rust coating

Hongdan anti-rust coating is made of a mixture of red dan and dry oil, because red dan is easy to precipitate, it is not suitable for long-term storage, so it is difficult to buy ideal red dan anti-rust paint on the market, and the use rate is not high.

2. Iron red phenolic antirust coating

The anti-rust ability of iron red phenolic anti-rust coating can be comparable to that of iron red alkyd anti-rust coating, but the construction of this coating is relatively complicated, and the construction must ensure that the substrate is clean and free of dust, impurities, oil and other items, otherwise it will seriously affect its effect.

3. Iron red alkyd anti-rust coating

Iron red alkyd anti-rust coating is a kind of anti-rust coating in the anti-rust coating with strong anti-rust ability, in addition to anti-rust, it also has good nitric acid resistance, and is widely used in the printing iron can industry, which is generally used as a primer for external oil-coated coatings, and the performance after drying is ideal.

4. Transparent conformal coating

The main film-forming substance of transparent paint is polyurethane resin, which can react with moisture in the air to solidify into a film after being coated on the surface of the coated object, and can also be baked and cured to form a film. This kind of coating film has the three-proof performance of moisture-proof, anti-salt spray and anti-mildew, it has high brightness and good appearance after coating.

5. Gray anti-rust coating

Gray anti-rust coating is made of a large amount of lead and zinc oxide mixed with a small amount of clear coating, its anti-rust ability is also relatively strong, and there is a good resistance to atmospheric erosion, has been affirmed by the public.

Water-based metal antirust paint is made of inositol hexaphosphate, a strong metal chelating agent, as the main ingredient, and is compounded with several other water-based additives. When it is used as a rust inhibitor for magnetic materials, it can quickly chelate with metal on the surface to form a dense monomolecular complex protective film.

Anti-rust paint is commonly known as anti-rust paint in life, which is a functional coating composed of film-forming substances, anti-rust pigments, fillers, etc., containing antirust agents that can passivate the metal surface. The main function is to prevent the metal from rusting and increase the adhesion of the coating, so that the surface of the metal object is isolated from the atmosphere, and to prevent the chemical or electrochemical interaction between foreign harmful substances and the metal.

The classification of anti-rust coatings mainly includes:

1. Alkyds.

Generally, the commonly used red dan antirust paint and iron red antirust paint belong to the alkyd category, as well as alkyd blending paint and alkyd magnetic paint.

2. Epoxy.

Epoxy antirust coatings mainly include epoxy zinc-rich primer, epoxy zinc phosphate primer, epoxy micaceous iron intermediate paint, epoxy topcoat, etc.

3. Acrylics.

Acrylic antirust coatings mainly include acrylic paint, acrylic polyurethane paint, and polyurethane paint.

The anti-rust paint with the best anti-rust effect is: red dan anti-rust paint, alkyd anti-rust paint, iron red anti-rust paint, gray anti-rust paint, zinc-rich anti-rust paint, etc.

1. Hongdan anti-rust paint

Look at the name to know that it is a paint made of a mixture of red pill and dry oil, this kind of paint has several characteristics of permeability, strong wettability, soft air film, and strong adhesion.

2. Alkyd anti-rust paint

The raw materials of this kind of antirust paint are pigments such as iron dan, lead chrome yellow, etc., and then put alkyd paint, filler solvent, and drier together, and are prepared in a certain proportion. Alkyd antirust paint has good adhesion, strong anti-rust ability, high hardness, elasticity, and strong impact nitro resistance. This kind of rust inhibitor is more suitable for the primer of external paint in the printing iron can industry.

3. Iron red anti-rust paint

This category of anti-rust paint, it is mainly to avoid the surface layer of the metal from being polluted by air moisture. In addition, it is also avoiding chemical or physical corrosion. So it is mainly for metal rust prevention.

Moreover, the storage of iron red anti-rust paint is also particular, and it should be placed in a dry and ventilated place. Because of the iron red anti-rust paint, it actually adds a drier, which can speed up its drying if placed in a ventilated place.

4. Gray anti-rust paint

The performance of gray anti-rust paint is not much different from that of iron red anti-rust paint, and it is mainly used for light-colored topcoats, high-brightness topcoats and primer coatings of metallic paints.

5. Zinc-rich anti-rust paint

Zinc-rich anti-rust paint is an electrochemical anti-rust paint, which has high requirements for substrate treatment and good anti-rust performance. In addition, it has the function of preventing the spread of minor scratches and rust.

In reality, the metal used in the atmosphere is easy to rust, so it is necessary to prevent steel from being corroded by the atmosphere, and the anti-rust coating on the metal surface can effectively avoid the direct invasion of various corrosive substances in the atmosphere, so as to maximize the extension of the use time, let's take a look at the classification of anti-rust coatings.

Oil-based metal anti-rust paint.

There are two types of anti-rust paints used: oil-based anti-rust paint and water-based anti-rust paint. Oil-based antirust paint makes it difficult to remove the greasy surface of the material, and is rarely used. Oil-based anti-rust paint is easy to use and inexpensive, but because it contains toxic substances such as nitrite and chromate, it is harmful to operators, and the state has restricted the use of such products, and the performance of such products is single, which can not meet the anti-rust requirements of magnetic alloy materials.

Water-based metal anti-rust paint.

Inositol hexaphosphate, a strong metal chelating agent, is selected as the main ingredient and compounded with several other water-based additives. Inositol hexaphosphate is a natural non-toxic organic chemical product extracted from food crops, when it is used as a rust inhibitor for magnetic materials, it can quickly chelate with metal on the surface to form a dense monomolecular complex protective film, which can effectively inhibit the corrosion of metal. The surface of the treated material retains its original color and can be used in the next process such as painting without washing.

Anti-rust pigments. It is an important part of anti-rust paint. Physical anti-rust pigments are a kind of pigments with relatively stable chemical properties, which rely on their own physical properties, chemical accompaniment can be stable, hard texture, fine particles, excellent filling, improve the density of the paint film, reduce the permeability of the paint film, and thus play a role in rust prevention. Iron oxide red is one such substance.

The rust resistance of metal aluminum powder is due to the fact that aluminum powder has a scale-like structure, forming a tight paint film, and has a strong ability to reflect ultraviolet light, which can improve the anti-aging ability of the paint film.

Anti-rust coatings can be divided into two categories: physical and chemical anti-rust paints. The former relies on the proper combination of pigment and paint to form a dense paint film to prevent the invasion of corrosive substances, such as iron red, aluminum powder, graphite antirust paint, etc.; The latter relies on the chemical rust inhibition effect of antirust pigments, such as red dan, zinc yellow antirust paint, etc. It is used for rust prevention of reeds in bridges, ships, pipelines and other metals.

Now whether you appear on the street or on the Internet, the frequency is relatively high, but if you want to buy anti-rust paint, do you know about anti-rust paint? When we buy anti-rust paint, we can not only look at his **, we should also care about its type, what are the characteristics, only to understand these, in order to let you buy the right anti-rust paint. SoTypes of anti-rust paintWhat are they?

How much is anti-rust paint**? If you don't understand, follow us to learn and learn.

Types of anti-rust paint and **:

Anti-rust paint type 1: Hongdan anti-rust paint

Product**: 15 yuan kg.

Hongdan antirust paint is a paint made of a mixture of red dan and dry oil, and its advantages are: good permeability, soft paint film, strong adsorption, but things have two sides, so it also has disadvantages: it is not easy to paint, it dries slowly, and it cannot be stored for too long.

Anti-rust paint type 2: iron red phenolic anti-rust paint

Product**: 6 yuan kg.

Iron red phenolic anti-stuffy rust search paint is made of anti-rust pigment, long oil phenolic or lipid glue paint, and rosin perfume in a certain proportion. Its biggest advantage is that it has strong adsorption and the paint film is very soft.

Anti-rust cover paint type 3: iron red alkyd anti-rust paint

Product**: 11 yuan kg.

Iron red alkyd antirust paint is made by adding alkyd paint, filler, solvent and drier to iron dan, lead, chrome yellow and other pigments. The advantages of this type of paint are many, such as excellent adsorption, strong rust resistance, and nitro resistance. However, the surface of this paint is not as smooth as other paints after drying, so it is very suitable for priming in the printing iron can industry.

Anti-rust paint type 4: zinc yellow anti-rust paint

Product**: 35 yuan kg.

It is made by adding zinc chromium yellow pigment with pure phenolic paint and grinding and modulating, and the biggest advantage is that it has a high resistance to salt water, so this kind of paint is very suitable for painting on ships.

Anti-rust paint type 5: gray anti-rust paint

Product**: 12 yuan kg.

It is made by adding varnish with lead-containing zinc oxide as the main anti-rust pigment. It has excellent properties against rust and atmospheric erosion, but dries more slowly. Suitable for painting exterior steel elements.

That's all for youTypes of anti-rust paintWhat are they? How much is anti-rust paint**? Annihilation is all about.