What is the difference between an epoxy primer and an epoxy topcoat

Clause. First, the role is different.

Epoxy primer: Used for the first layer of paint, in direct contact with the substrate, the paint film will be slightly rough, used to fill the paint surface, support the topcoat, and provide fullness.

Epoxy topcoat: is the final coating of the painting. So the paint film will be smoother and smoother.

Clause. Second, the design is different.

Epoxy primer: it is to increase the adhesion between the substrate and the coating (to put it bluntly, it is to ensure that the paint is not off), for the anti-corrosion of steel structures, zinc powder, anti-rust pigments, etc., the epoxy primer produced by Double Lion Paint has epoxy zinc-rich primer for steel structures, which is used for aluminum, galvanized parts, stainless steel is used with ED1000 epoxy primer, and epoxy sealing primer is used for cement and other surfaces. At the same time, the epoxy primer also has good adhesion to substrates such as FRP.

Epoxy topcoat: mainly plays a decorative and protective role. Double Lion epoxy topcoat coating has a variety of colors, has very good decoration, paint film corrosion resistance, solvent resistance, epoxy topcoat is mainly suitable for indoor environment use, not suitable for outdoor coating.

Double Lion epoxy topcoat mainly includes: epoxy phenolic paint for the inner wall of liquid storage tanks and storage tanks, non-toxic epoxy paint for drinking water pipelines, water pipelines and drinking water containers, epoxy glass flake paint for buried pipelines and underwater steel pipelines, etc.

Clause. Third, the use is different.

Epoxy primer: It has good adhesion and workability, and is usually used for anti-corrosion and anti-rust primer for steel structures and non-ferrous metals.

Epoxy topcoat: The paint film is smooth, the resistance to organic solvents and oil is quite good, and it is usually used in underwater, indoor humid environment, marine waterline paint, etc.

Finally, we can see that epoxy primer and epoxy topcoat have their own merits, but if we distinguish between using a primer and only a topcoat, there will be poor anti-rust effect and reduced adhesion, while not using a topcoat and only using a primer, there will be disadvantages such as poor anti-corrosion decoration effect. At this time, a good combination of primer and topcoat can protect the substrate for a longer time.

Said to be renovated. It's one.

Very esoteric knowledge, and the decoration in the routine is very deep, if you know too little about decoration is likely to encounter "decoration traps", there are many similar names in the decoration of products, such as topcoat and primer. If you don't know much about topcoat and primer, you will definitely be curious about what is the difference between topcoat and primer, and think that you should understand what the role of primer is first? What is the role of a topcoat?

Then by comparing the role of primer and topcoat, you can know the difference between them.

The role of the primer

The primer is the first layer of the paint system, which is used to improve the adhesion of the topcoat, increase the fullness of the topcoat, provide alkali resistance, provide anti-corrosion function, etc., and at the same time can ensure the uniform absorption of the topcoat, so that the paint system can play its best effect. No matter how good the topcoat is, you need to brush the primer first to improve adhesion, corrosion resistance, alkali resistance, etc.

Applying a layer of sealing primer before applying the topcoat can not only save the decoration cost, but also have the advantage of getting twice the result with half the effort in the long run and the decorative effect. At the same time, the good adhesion of the primer makes the wall surface smoother, making the topcoat easier to apply and reducing the amount of topcoat used. In this way, the wall not only avoids paint sickness, but also helps to maintain the painting effect for a longer time.

The role of the topcoat

The topcoat is the final coating of the painting, and it is the last layer to be applied in the decoration of the building wall, and the overall effect presented after the decoration is reflected through this layer.

The topcoat has high requirements for the material, such as good chromaticity and brightness, etc., should have a good resistance to external conditions, and must have the necessary hue and decoration, and have a protective effect on the bottom coat. For outdoor use, the topcoat should be made with excellent weather resistance.

The decorative effect and weather resistance of a topcoat depend not only on the base of the paint used, but also on the pigments used and the preparation process.

The difference between a topcoat and a primer

1. The composition is different

The primer is composed of four parts: resin, filler, solvent and auxiliary; The difference between the topcoat component and the primer is mainly that the former has little or no filler.

2. Play a different role

The primer is the first layer of the paint system, which is used to fill the paint surface, support the topcoat, provide fullness, reduce costs, and help save energy; The topcoat is the final coating of the coating, which is the last layer to be applied in the decoration of the building wall, so as to increase the number of coating layers of the topcoat and the method of thickly applying the topcoat to increase the thickness of the paint film. The thickness of the coating is mainly provided by the primer, while the topcoat is mainly used for decoration and protection.

If you take the topcoat and primer literally, the topcoat must be the paint applied to the top layer, and the primer is the paint applied to the bottom. The role of primer and topcoat in decoration is different, probably because the composition of primer and topcoat is different, resulting in different decoration effects of primer and topcoat. Through the introduction of primer and topcoat, you will find that there is such a big difference between primer and topcoat, and you must choose carefully when choosing primer and topcoat next time.

1. Epoxy primer

1. Strong adhesion, with anti-rust pigments, suitable for steel, carbon steel, cast iron and other substrates, and can also be used for smooth metal surfaces such as galvanized sheets, stainless steel, aluminum alloys, etc., to prevent rust and corrosion.

2. The surface of the epoxy primer is matte, no luster, the paint film is gray or iron red, and there are other colors, which are less used, among which gray is widely used.

3. Epoxy primer is directly coated on the metal surface as a primer, with excellent corrosion resistance to the substrate and good salt spray resistance of the paint film.

2. Epoxy topcoat

1. Good adhesion, high cross-linking density, dense paint film, water-resistant, solvent-resistant, anti-corrosion, mainly used in indoor environment, not resistant to ultraviolet rays, and not suitable for use in sunny fields.

2. The epoxy topcoat has a variety of colors, such as black, white, gray, red, yellow, blue, green and other colors, which can be modulated and has a certain degree of decoration. It is used for surface coating of steel structures, machinery, equipment, instruments, and parts.

3. Most of the epoxy topcoats are used with epoxy primers, the primer provides good adhesion and anti-rust ability, and the topcoat provides anti-corrosion and decorative effects.

Epoxy paint is a general term for epoxy resin coatings, which includes many branches, including primer, intermediate paint and topcoat according to the type of coating.

Commonly used topcoat: epoxy anticorrosive topcoat Commonly used intermediate paint: epoxy micaceous iron intermediate paint Commonly used primer:

Epoxy primer, epoxy zinc phosphate primer, epoxy sealing primer There are other types of epoxy paint: epoxy coal asphalt paint (including primer and topcoat), epoxy phenolic paint (including primer and topcoat), epoxy glass flake paint (including primer and topcoat) Epoxy paint is used as a primer and intermediate paint, because this type of paint has very good adhesion and anti-corrosion, but for external ultraviolet rays.

Poor resistance and weather resistance is required.

For topcoat, the commonly used supporting systems are as follows: epoxy primer + epoxy micaceous iron intermediate paint + fluorocarbon paint.

Epoxy primer + acrylic polyurethane topcoat Epoxy sealing primer + epoxy primer + acrylic polyurethane topcoat.

Epoxy primer can play a closed role, and has a good moisture-proof effect on wall decoration, and it is also because of this that more and more people are beginning to choose epoxy primer. But for the role of epoxy primer, not many people are clear, today I will introduce to you the role of epoxy primer, as well as the use of epoxy primer can not be wronged in several aspects.

The role of epoxy primer.

1. Closed. Some of the walls are alkaline, and when they are soaked in wet weather or water, they will produce alkaline flowers, which are called "pan alkali". In this case, the wall will bulge, and if it is severe, it will cause the paint film to be damaged.

But epoxy primer is different, it has a very strong sealing effect, which can alleviate this situation and protect the wall.

2. Adhesion. In epoxy primer, the content of emulsion is very high, which determines that it has a strong adsorption capacity, enhances the adhesion between the epoxy primer and the wall, and is not easy to fall off, because it has a strong service life.

There are several aspects that cannot be wrong with the use of epoxy primer.

1. When the epoxy primer is opened and blended, it needs to be used within 2 hours, and the dosage must be controlled.

2. When using epoxy primer, it is best to be able to spray with high-pressure airless, but the conditions are limited, so that air spraying will be used, which can make the paint film of the wall smoother.

3. The epoxy primer should be stored in a cool and dry place, so that it is less likely to deteriorate, and the storage time of the epoxy primer is usually about three years.

4. When blending the primer, it is necessary to mix according to the proportion on the instructions, if it is too thick after blending, you can write the thinner into it appropriately.

5. When using spraying or brushing, it must be ensured that every surface burn and corner can be coated to prevent any leakage.

6. When using epoxy primer, the content that needs to be diluted is about 25 30% of the total amount of paint; The amount of paint that needs to be occupied by brushing is about 10% of the total amount of paint.

7. When the painting stage is finished, you need to wait for about 5 to 7 days to ensure that it can be completely dry. If it is raining, it is better not to carry out construction, the effect is relatively poor.

8. After the paint film is completely dry, you can carry out the next step of inspection, and the main section is to see the patience and rust resistance of the paint film.

In the process of decoration, we need to deal with paint, but you have to understand that there are different classifications of paint, the more common is ordinary paint, and the other is epoxy paint, what is the difference between the two? Today, I will give you a specific introduction, so that you can distinguish it when you use it.

1. The difference between the two is mainly manifested in performance, epoxy paint has strong corrosion resistance and can be used for internal painting, while the corrosion resistance of ordinary paint is relatively poor, and it can be removed by wiping it with gasoline.

2. The film-forming method is also different, epoxy paint is a special paint, which has the composition of epoxy resin inside, which can react with the curing agent. Ordinary paints contain nitroammonia, which belongs to the type of oxidative polymerization.

3. The adhesion ability is also different, the adhesion of epoxy paint in all paints is relatively non-scattered, so it is more suitable for brushing, it is not easy to fall off the paint, it can be painted on steel or cement. Compared with ordinary paint, the adhesion is slightly weaker, and it is generally more suitable for painting on wood. Kamiga.

4. The scope of painting is also different, because epoxy paint has the characteristics of moisture resistance and heat resistance, so it is more suitable for painting in a humid environment and is not affected.

Second, the advantages and disadvantages of epoxy paint.

1. Advantages. 1) Its properties are relatively stable, mainly because epoxy paint can be used as an anti-corrosion primer.

2) The adhesion is also very good, because it can be painted on metal materials, including ceramics and glass, and the adhesion is very strong.

3) It has very good strength and has a certain toughness, so it is not easy to break.

4) After the epoxy resin paint is solidified, it has very good insulation.

2. Disadvantages. There are certain requirements for the construction environment, generally speaking, its solidification temperature should reach more than 10 degrees, otherwise it will affect its curing speed, so the temperature is below 10 degrees Celsius when it is not suitable for construction, and the winter construction will bring certain difficulties.

In our usual life, I believe we have seen a lot of wall paints and primers, for these brands and materials we also have a certain understanding of this, today I will talk about the role of epoxy base, I hope this article can help you.

1. What is the function of epoxy primer?

1. Epoxy primer is an epoxy primer used in cast iron, carbon steel and other iron machines, which mainly plays a role in anti-corrosion, anti-rust, anti-fog and anti-salt.

2. And the adhesion of epoxy primer is particularly good, and it will also play a role in anti-rust and anti-corrosion when used on steel metal materials, if the epoxy primer is used on the floor, it can also play the role of waterproof, anti-bubble, anti-oil and anti-shedding, and more importantly, its sealing is very good.

2. What are the precautions for using epoxy primer.

1. When we use epoxy primer, we should clean the grease of the base layer, and then ensure that the surface of the construction is clean and dust-free, in addition, we also need to smooth the corners and corners, if it cannot be smoothed, the epoxy primer will flow away from the tip during construction, resulting in uneven painting.

2. Keep the surface dry when applying epoxy primer, and make sure that the epoxy primer is above 0 after the construction is completed, which can be conducive to drying, try not to operate the epoxy primer, if you can, air conditioning indoors.

3. The epoxy primer is still relatively long in life, but it depends on the construction method and skills, we must pay attention to the details during construction, if you do not pay attention to the relevant details, it is likely to affect the service life of the epoxy primer.

The above is a summary of the relevant content and information about what the role of epoxy primer is, I hope it can help you. If you have any other questions, you can leave a message at the bottom of the platform, and you will solve the problem in time when you see it. I believe that you also have a certain understanding of this through this article, if you have other questions, you can pay attention to Qeeka Home.