What does a primer do? When should I spray a primer?

Definition: He is the first paint to color the car, and the subsequent process of changing the color of the car surface must be completed through the process of automobile painting primer, and it must be completed on the basis of automobile painting primer.

2. Characteristics: First of all, it must have good adhesion with automotive materials, and it must have good matching with the paint applied later. Therefore, it must also have water resistance, rust resistance, chemical resistance, corrosion resistance, oil resistance and other characteristics, and the paint film formed must also have stone chip resistance, hardness, flexibility, and gloss.

3. Materials: At present, there are two main materials in the market, one is spraying nitro primer and the other is epoxy resin primer. Later, cathodic electrophoresis primer, solvent-based dip primer, anodic electrophoresis primer, and water-based dip primer were slowly derived.

4. The scope of use: the cathode electrophoresis primer used in high-end cars in the market is the majority, with the maturity of the process and the development of technology, the cathode electrophoresis primer is getting cheaper and cheaper, and the use of cathode electrophoresis primer is also popularized in more car industries.

5. Solvents for automotive paint primers: the solvents phenolic resins, nitro resins, amino resins, alkyd resins, and epoxy resins currently used in the market are more common. Pigment fillers, iron oxide red, carbon black, titanium dioxide and other pigments are mostly used.

There are two types of processes: spraying and dipping.

6. The use of electrophoretic paint: This type of primer is mainly developed in water erosion, mainly in the water through the charge of water to form a membrane polymer. The main substances used in this type of primer are organic amines or organic acids, the film-forming polymer is anionic and cationic resins, the neutralizer is non-mechanical, and the pigment selection is generally titanium dioxide and carbon black.

Causes of car paint primers.

Having a primer is equivalent to a person having confidence, no matter what kind of "article" you do on your car, there will be no fear. Many paints on the market will cause certain damage to their bodies, and the primer is also to protect the original intention and essence of the car.

Nowadays, many painting industries attach great importance to their primers, so the original materials are constantly updated during production, which is also a trend in the development of the automobile market.

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 the best effect.

Corrosion-resistant. 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.

Topcoat *** can do without primer, this statement is not correct, because the function of topcoat and primer is different, topcoat is more focused on the final decoration and apparent effect, while primer focuses on improving adhesion, anti-corrosion function, alkali resistance, etc.

The primer is usually off-white, and has a certain viscosity of the liquid, can be directly applied to the surface of the paint paint, is the first layer of the paint system, used to improve the adhesion of the topcoat, increase the fullness of the topcoat, improve the decoration of the topcoat, provide alkali resistance, provide anti-corrosion function, etc., at the same time can ensure the uniform absorption of the topcoat, so that the paint system can play the best effect, generally according to the coating requirements can be divided into the first primer, the second primer, etc.

The role of the primer.

The role of the topcoat is mainly scratch resistance, hardness, gloss, feel, transparency, aging resistance, yellowing resistance, etc., the quality of the topcoat directly affects the quality of the entire paint film, but the role of the primer is also very important

Hello dear! It is the first layer of the paint system, which is mainly used to improve the adhesion of the topcoat, increase the fullness of the topcoat, provide alkali resistance, anti-corrosion function, etc., and at the same time, the primer can ensure that the topcoat is evenly absorbed, so that the paint system can play the best effect. According to the coating requirements, the primer can be divided into the first primer, the second primer, etc.

Some people say that the topcoat can be used without a primer if the quality is good, which is not true, because the function of the topcoat is different from the primer, the topcoat focuses on the final decorative effect, while the primer focuses on improving adhesion, anti-corrosion function, alkali resistance and other effects. Hope it helps! Have a great day! 珞

What is a primer?

The primer is usually off-white, and has a certain viscosity of the liquid, can be directly applied to the surface of the paint paint, is the first layer of the paint system, used to improve the adhesion of the topcoat, increase the fullness of the topcoat, improve the decoration of the topcoat, provide alkali resistance, provide anti-corrosion function, etc., at the same time can ensure the uniform absorption of the topcoat, so that the paint system can play the best effect, generally according to the coating requirements can be divided into the first primer, the second primer, etc.

The role of the primer.

The role of the topcoat is mainly scratch resistance, hardness, luster, feel, transparency, aging resistance, yellowing resistance, etc., the quality of the topcoat directly affects the quality of the entire paint film, but the role of the primer is also very important, the primer mainly has the following functions:

1. Closed. The primer can effectively seal the base layer and make the wall base layer stronger. Some walls are more alkaline, and alkaline flowers are produced after being soaked in moisture and water, which is the scientific name"Panuthin"This situation causes the formation of crater-like protrusions on the surface of the paint film, and in severe cases, a layer of alkali frost is formed on the surface of the paint film, which eventually destroys the paint film.

Latex paint primers can act as a sealant to alleviate this situation. However, if the walls of your house are dry and the floors are higher, it may not be a problem if you don't use it, but it is recommended that you use it, which is more safe.

2. Adhesion.

The primer can enhance the adhesion of the topcoat, improve the adhesion between the latex paint film and the wall, and avoid the peeling and peeling of the wall.

3. Fill in. Primer can make up for microcracks and improve the flatness of the wall, if your wall is relatively flat, you can do without primer, of course, the use effect will be better.

4. Cost saving.

The first primer is generally cheaper than the topcoat, so applying the primer before applying the topcoat can save the decoration cost.

Primer and primer paint, it is generally directly coated on the surface of the construction surface or coated on the surface of particles, its role is to prevent oxidation and corrosion of the metal surface, 2 is to enhance the adhesion between the metal surface and particles, particles and paint surface.

The role of the primer is to strengthen the waterproofing and strengthen the leak proof.

From a certain point of view, it is also to save money.

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What is a primer?

Primer is a kind of coating, which can be directly applied to the surface of the base layer, and is the first layer of the coating system, which is used to improve the adhesion of the topcoat, enhance the alkali resistance of the base layer, prevent the bacteria and mildew of the base layer, and at the same time can ensure the uniform absorption of the topcoat and make the coating system play the best effect.

What is the purpose of the primer?

Blocking effect - by sealing the base layer, prevent the exudation of alkaline and other undesirable substances.

Increased Adhesion - By choosing a high-adhesion primer, the adhesion between the topcoat and the base layer can be increased.

Improves the base layer - By penetrating into the base layer, the absorption rate of the base layer is reduced, the strength of the base layer is increased, and a uniform and consistent base layer is provided for the topcoat.

Anti-alkali effect - in addition to sealing, the primer itself has higher alkali resistance, preventing the destruction of the paint film by alkaline substances.

When to use a primer?

The primer is designed to adhere to the surface of the base layer and form a bond with the topcoat.

Primers are often used to apply to porous substrates, such as concrete, especially wood. If the base layer is not waterproof, priming is a must.

Priming plasterboard is also a standard procedure in the construction industry, as it fills in the fine voids on the surface of the material and helps prevent mold.

Sometimes the surface of the base layer to be treated is too dirty to clean and also needs to be primed.

To apply a light paint to a dark surface, you can also apply a primer to cover up the original color.

How should I choose a primer?

There are many varieties of primer to choose from, how to choose primer, should be selected according to the characteristics of the base layer and topcoat, usually there are the following aspects for reference:

1. According to the porosity of the base layer.

For loose and porous substrates, it is advisable to choose a permeable transparent primer coating, which can deeply penetrate into the pores, so as to achieve a good sealing effect. For substrates with small porosity, you can choose a film-forming white primer to form a dense paint film to seal the substrate.

2. According to the strength of the base layer.

For the base with high strength and hardness, it is advisable to choose a white primer with a hard paint film as a sealing primer to achieve the matching of strength.

3. According to the degree and possibility of pan-alkali.

For walls with strong alkalinity and easy to pan alkali, it is advisable to choose a solvent-based primer with excellent sealing performance.

When we decorate the wall, we often need to use paint, but when painting the wall, we usually brush the primer first, so what is the role of the primer? In addition to the primer and the topcoat, is there any difference between the primer and the topcoat, and then I will introduce to you what the role of the primer is, and see what is the difference between the primer and the topcoat.

1. What is the primer?

The primer is usually a white and viscous liquid that can be directly applied to the surface of the object, which is the first layer of the paint system, which is used to improve the adhesion of the topcoat, increase the fullness of the topcoat, improve the decoration 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 the best effect, generally according to the coating requirements can be divided into the first primer, the second primer, etc.

Second, what is the role of the primer

1. Prevent alkali return on the wall, which is a layer of white powder on the wall.

2. Increase the adhesion of the wall, make the topcoat easier to brush, and it is not easy to fall off after brushing;

3. The wall surface with primer can save 20% of the topcoat. Primer is a must-have for home decoration painting, and it cannot be omitted!

Third, the characteristics of the primer

1. The primer can save the topcoat and enhance the adhesion of the topcoat.

2. The primer is very water-resistant, so that the wall can be kept dry at any time.

3. The primer has strong adhesion and strong penetration.

4. The primer has strong alkali resistance and prevents the wall from returning to alkali and pulverizing.

5. The primer can effectively prevent mildew and algae, and has excellent performance.

Fourth, the difference between primer and topcoat

1. The properties of primer and topcoat are different.

There is also a big difference between primer and topcoat in terms of performance, in which primer is generally divided into sealing paint and primer, the sealant is mainly used as a sealing substrate, protecting the plate and ensuring the quality of coating, while the primer is mainly used to fill pores, improve the thickness of the coating film, reduce the amount of topcoat, etc.; The function of the topcoat is mainly to play the role of decoration and protection, and it must retain gloss, color, hardness, adhesion, leveling, etc.

2. There is a difference in the composition of primer and topcoat.

There is also a big difference in the composition of the primer and the topcoat in the latex paint, and the different roles of the primer and the topcoat lead to a certain difference in the composition. The primer is used as an auxiliary paint for the topcoat, in which the transparent paint and the solid color primer are composed of film-forming substances, fillers, solvents and additives; Topcoats, on the other hand, are composed of resins, solvents, additives, and little or no fillers. The difference between the composition of the primer and the topcoat determines its own characteristics, properties and uses, the decorative effect and anti-aging effect of the topcoat are strong, while the adhesion and texture of the primer are relatively strong.

What is the role of primer? What is the difference between primer and topcoat is introduced here, I hope that air combustion will help everyone.

The color of the primer is off-white, which is a very viscous liquid, which can be applied directly to the surface of the object, and is the first layer of the paint system, which can improve the adhesion of the topcoat, increase the fullness of the topcoat, improve the decoration of the topcoat, and provide anti-corrosion functions. In addition, it ensures that the topcoat is evenly absorbed, so that the paint system can get the best effect. So, let's introduce what are the functions of primer and how to choose primer.

What are the functions of the primer.

1. Closed. The primer can alleviate the damage of the wall paint film and play a sealing role in the wall. For drier walls, it may not be a problem not to do primer, but for insurance, it is best to apply primer.

2. Adhesion.

The emulsion content in the primer is high, the adhesion is strong, and the penetration is good, so after using the primer, the adhesion between the latex paint film and the wall can be improved.

3. Fill in. Primers can fill in walls, smoothing them out and helping them stay in place for longer.

How to choose a primer.

1. According to the porosity of the base layer.

For the loose and porous base layer, you can choose transparent primer coating, which can penetrate deeper into the pores and achieve good sealing. For substrates with small porosity, a white primer can be selected to seal the substrate in the form of a dense paint film.

2. According to the strength of the base layer.

For the base layer with high strength, you can choose a white primer with a hard paint film to achieve the matching of strength.

3. According to the degree and possibility of pan-alkali.

For highly alkaline walls, you can choose a solvent-based primer with good sealing properties. keys such as.

Features of the primer:

1. Strong adhesion and good permeability.

2. Strong alkali resistance, which can prevent the wall from returning to alkali and pulverizing.

3. Good water resistance, which can keep the wall dry.

4. It can save the topcoat and enhance the adhesion of the topcoat.