What is the function of the primer of latex paint, is it okay not to brush

1. 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 ensure the uniform absorption of the topcoat and make the paint system play the 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.

Second, home decoration is necessary to use primer, which requires firm adhesion on the surface of the object to increase the adhesion of the upper layer of paint and improve the decoration of the topcoat. According to the coating requirements, it can be divided into the first primer, the second primer, etc. The more commonly used primers are:

1.Iron red cathode electrophoresis primer: This paint film has good adhesion and corrosion resistance, which is more superior than anode electrophoresis primer, suitable for primer of metal parts, especially suitable for primer of iron and steel products.

2.New metal anticorrosive primer: the paint dries quickly, has strong adhesion, good mechanical properties, and has good oil resistance, rust resistance and corrosion resistance. It is mainly used for the bottom coating of various automobile bodies, cabins and parts.

3.Phosphating primer: used as a primer for serum-based materials.

4.Aminoalkyd acid secondary primer: used for intermediate coatings. It is suitable for use on primed and sanded putty layers to fill the sand holes and lines of the putty layer.

5.New Wood Closure Primer: Suitable for Wood Closure Primer, Decorative and Architectural Coatings.

6.New metal primer: used as a primer for metal surfaces.

7.New zinc-rich primer: used in shipyard underwater metal surface coating and chemical anti-corrosion metal primer.

8.Iron red alkyd resin primer: used to coat the surface of steel with a more uniform rust layer.

9.Rubber alkyd primer: brushed or sprayed on treated metal surfaces.

10.Zinc yellow polyurethane primer: suitable for the base coating of railways, bridges and various metal equipment.

11.Acrylic epoxy resin primer: It has good salt spray resistance, damp heat resistance and good mechanical properties, has good adhesion to metal surfaces, and can be used as an excellent anti-rust primer.

12.New polyphenol oxygen pre-coat primer: used in machinery and vehicles, equipment, shipbuilding and other industries.

13.Epoxy primers in various colors: suitable for coating light metal surfaces.

14.New asphalt ship primer: suitable for the underwater part of the ship, can also be used as an isolation layer between aluminum powder asphalt ship primer and asphalt antifouling paint.

If the wall is not water-resistant putty, it can not resist the infiltration of water in the latex paint topcoat, and the result is that the putty layer cracks, and even becomes inseparable from the base layer, and this is the most fatal, once the moisture, the wall skin will be rolled, and the only solution is to rework.

The function of the primer is to separate the topcoat from the putty layer, to prevent the alkali from being exposed to the bottom, and to prevent the water in the topcoat from infiltrating the putty layer.

The putty layer of the interior wall is afraid of water, I don't believe you can spray some water with a watering can, and look at it again every two days.

Without priming, cracking of latex paint is inevitable (caused by cracking of the putty layer), unless you approve water-resistant putty.

The primer is painted, and the topcoat is not only positive in color, but also very economical.

Latex paint must use primer, people have to brush a layer of primer when brushing latex paint, because only in this way will it be easy to clean up the wall in the future, if you don't use primer, it will be more difficult to clean up the wall dirty, so it is a very important step to brush a layer of primer before brushing latex paint.

Emulsion is the most important raw material affecting the performance of latex paint, which looks like milk, and is made of some petrochemical raw materials such as vinyl acetate, acrylate, styrene, etc. through polymerization chemical reaction in water.

Depending on the raw materials and processes used, the resulting emulsion has different properties. The main functions of emulsion are adhesion, water resistance, alkali resistance, anti-photoaging, etc.

Features of latex paint:

Good opacity is an integral part of a high-quality latex paint, which represents a better, less time-consuming and less cost-effective stucco job. Good adhesion avoids cracks and blemishes, and ease of cleaning ensures gloss and color retention. Therefore, they are an important indicator for choosing latex paints.

The latex paint with good applicability will not cause bubbles and splashes during operation, and it will bring smooth walls to the living room. Elastomeric emulsion paints protect walls by providing excellent waterproofing and preventing water from penetrating the walls and damaging the cement.

Hello, I'm glad to answer your questions, please wait a minute, the primer is very important, the primer is a 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 a better effect. Because the functions of the topcoat and the primer are different, the topcoat focuses more on decoration and performance, while the primer focuses on improving adhesion, anti-corrosion function, alkali resistance, etc., and the topcoat can be without primer, which is not true. In general, people have to brush a layer of primer when brushing latex paint, because only in this way will it save trouble to clean up the wall in the future, if you don't use primer, it will be more difficult to clean up the wall dirty, so it is a very important step to brush a layer of primer before brushing latex paint.

5. The cost is low, the primer is lower than the topcoat, if you want to achieve the same effect, brush the primer first and then brush the topcoat, which can reduce the construction cost.

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In wall construction, we need to follow a certain construction sequence and specifications, so as to ensure the construction quality of the wall. There are many owners who have this question: is it necessary to paint the wall paint

Today, let's take this question and learn about the need for wall paint primer with the top ten brands of wardrobe boards Xuebao!

What is the role of wall paint primer?

Since the primer is directly brushed on the bottom wall, relatively speaking, the role of the primer is to protect the wall, enhance the adhesion of the topcoat, increase the fullness of the topcoat, and provide anti-alkaline, anti-corrosion and other functions. At the same time, it can ensure the uniform absorption of the topcoat, so that the paint system can play the best effect.

Is a wall paint primer necessary?

1. Closed. The reason why it is necessary to paint a layer of primer is because it can close the base layer of the wall very well, which can make the base layer of the wall more firm. Our walls are mostly alkaline, there will be alkaline substances precipitation, will have a chemical reaction with latex paint, after the soaking of moisture and water, there will be a "pan alkali" phenomenon, and this situation will cause the formation of crater-like protrusions on the surface of the paint film, and in serious cases, a layer of alkali frost will be formed on the surface of the paint film, and finally the paint film will be destroyed. Therefore, applying a layer of alkali-resistant primer can not only seal the alkalinity and water of the wall, but also improve the adhesion ability of latex paint, which can effectively alleviate the impact of the "panalkali" phenomenon.

2. Adhesion.

The unconstructed wall is rough, and if we paint the wall directly, it will be difficult to achieve the desired painting effect. Brush a layer of primer first, because the primer can enhance the adhesion of the topcoat, can improve the adhesion between the latex paint film and the wall, avoid the phenomenon of peeling off the wall, and at the same time, it is also good for the fullness of the topcoat paint film.

3. Fill in. The primer can also make up for the unevenness of the wall, which can effectively improve the flatness and smoothness of the wall, and can cover up the subtle cracks on the wall. Secondly, applying primer can prevent the latex paint film from pulverizing, yellowing and peeling, which can improve the service life of the latex paint film and reduce the use of latex paint. And the primer is not expensive, and it is cheaper than the topcoat, so apply the primer before the topcoat, which can save the decoration cost.

What should I pay attention to when painting wall paint?

1. Before painting the wall paint, the brand, color card, certificate and finished product samples should be submitted to the owner, and the color should be adjusted after confirmation by the owner. If you are painting the surface of wood, you should first sand it with wood sandpaper to remove wood burrs from the wood. If there is any glue left on the joints of the wall, you need to smooth it with a scraper.

If there are stains on the surface and the color distribution is uneven, the surface of the wood should be decolorized first to adjust the color to be consistent.

2. Before painting, the dust and rust spots on the surface of the metal fittings should be cleaned up. If you are applying anti-rust paint, you should brush it at least twice. Pay attention to the surrounding environment before painting to prevent dust from falling and affecting the brushing effect.

During construction, it should be strictly implemented according to the requirements of the design to ensure the quality, so that the color is consistent, there is no falling skin, no missing brush, no brushing, etc.

1. Carry out the surface agent: the interface agent must be brushed, and it must be brushed evenly.

2. Crack treatment: In general, kraft paper tape and load-bearing walls need to be pasted, try to choose a better texture wall cloth and white latex, if there is a condition, you can use mesh cloth, the relative anti-crack effect will be better.

5. Putty: It is better to choose putty with high particle fineness and hard texture, and you can also add a certain amount of white latex to the putty, which can improve the hardness of the putty.

6. To polish: try to use finer sandpaper, generally softer putty (such as 821) with 400 500 sandpaper, hard texture (such as wall lining, easy to quack) with 360 400 is better, if the sandpaper is too coarse, it will leave a deep sand mark, and the paint can not be covered. After sanding, the wall must be thoroughly cleaned to avoid too much dust and affect the adhesion of the paint.

The difference between bumps and bumps does not exceed 3 mm.

7. Brush the primer: the primer must be brushed evenly to ensure that every place on the wall is brushed, if the wall eats a large amount of paint, add a little more water to the primer to ensure that it can be painted evenly. Don't think that just because it's a primer, it's okay to use a roller that is a little worse, the effect of the primer will directly affect the effect of the topcoat, and you should use a roller with the same texture as the topcoat.

8. To make up: after the putty is polished, there will be some flaws (pit eyes), which are generally difficult to see, only after brushing the paint will be obvious, at this time it is necessary to make up, pay attention to the repair must be polished and smooth, and then brush it with a primer with a little more water, so as not to have color difference when brushing the top paint because of the different draught with other walls.

9. Maintenance: The latex paint will dry at 4 o'clock after brushing, but the dry paint film has not reached a certain hardness, which is to care, very simple, do not scrub or touch the wall within 7 10 days.

Pro, I'm glad to answer for you, latex paint is okay without priming A: 1, latex paint with no primer to distinguish what the situation is, if it is to do color paint, it is recommended to brush the primer, the uniformity of color, color development are better. Especially for new walls within 3 months, and I am afraid that the wall is too alkaline, which will affect the effect of the paint.

A bucket of 18L primer will do. 2. But there will also be friends who find that during construction, many masters do not brush primer. This is because most people in the market do not paint primers, which is mainly the reason why the domestic market only pays attention to appearance, and of course it can also save money.

Therefore, the primer is not necessary to brush, generally speaking, there is a long enough maintenance period on the cement wall, you can not brush. For example, if you are a three-to-five-year-old wall or mountain, you can paint the topcoat directly without priming.

Nowadays, most people choose to use latex paint to decorate the wall when decorating the house, because the latex paint is not only simple and convenient to construct, but also has a very good effect, and can also play a role in protecting the wall. So, does latex paint need to be primed? What are the specific functions of the primer?

Let's take you to find out.

Latex paint needs to be brushed with primer, because if the car is not brushed with primer, the latex paint will soon appear moldy, bulging and falling off, so it is necessary to brush the primer so as to increase the service life of the paint. In addition, brushing the primer can also prevent the occurrence of alkali reversal, which means that brushing the primer can prevent the alkaline substances in the cement from seeping out through the paint.

What are the specific functions of the primer.

1. Adhesion.

The primer can effectively enhance the adhesion ability of the topcoat, and can also improve the adhesion between the latex paint film and the wall, so as to effectively avoid peeling, peeling, cracking and other conditions on the wall.

2, Lu Fan God fills in.

Primer can make up for the subtle cracks of the wall, to a certain extent to improve the flatness of the wall, if the wall is relatively flat, then you can not use primer, but the effect will be better after use, so it is recommended to use primer.

3. Closed. The sealing of the primer is very good, it can effectively close the wall base layer, so that the base layer can be more firm. For some walls with relatively large alkalinity, alkaline flowers will appear after being soaked in moisture or water, and alkaline flowers will form a layer of alkali cream on the surface of the paint film, and finally destroy the paint film of the wall, and the primer can play a role in alleviating and can effectively prevent the occurrence of such a situation.

4. Cost saving.

Primer and topcoat will be different in terms of **, generally speaking, the primer ** will be cheaper, so choosing to use a primer can save a certain amount of decoration expenses.

Article summary: The above is all about whether latex paint needs to be brushed early and what are the specific functions of primer, I hope it will be helpful to you. If you want to know more about it, please stay tuned to Qeeka Home.