What is the matter with the dense bubbles in the car paint, and whether it will rust

It could be rust or something else.

The causes of car paint bubbles are:

1. The paint quality is not good.

This kind of problem often occurs in the roadside shops outside, and the paint in this kind of shop is often very low, because they also use low-quality paint, and the quality of these paints sprayed on the car can be imagined.

2. The construction conditions and process are not rigorous.

The construction conditions and technology of the paint are very demanding, and it is strictly forbidden to have the slightest moisture on the paint surface before painting; The paint finish of the early stage is filled with ash (putty.

It needs to be thoroughly dried in a dry environment before entering the paint room to spray paint; The air duct connected to the spray gun for painting must be kept dry and does not allow the slightest moisture, which is also an important reason for the blistering of the car paint.

3. The paint is sprayed too thickly.

The spraying of the paint layer is not paid much attention or the technical limitations of the construction personnel often lead to the overall thickness of the paint is too thick and the paint body is downstream, and the later polishing is not handled well, which will also lay the groundwork for the future paint blistering.

4. Blistering means that the bubbles inside you are not discharged, and they all move to the surface when curing, and finally gather on the surface.

Cause analysis: After the dissection and analysis of the blistering part of the topcoat, the blistering layer is all above the middle coating. Only the topcoat film blistered, and the middle coating did not find any blistering.

The main reason is that the sealing ability of the primer is relatively poor, even if there is water vapor in the primer and primer film, it can volatilize through the micropores of the paint film. The paint film of the topcoat layer is relatively closed, especially after the complete reaction of the two-component paint, if the paint film contains water vapor, it cannot volatilize, and the topcoat film is locally stressed and produces bubbling phenomenon due to the action of weather temperature and bottom water vapor expansion.

The seasonality of producing rice grain bubbles is more obvious, and most of them occur.

In July and August, it is rainy and humid, and because the air contains a lot of moisture during this season, even in the paint booth, sometimes the humidity is greater than 70. When spraying paint, sometimes the surface of the coated object is ground by water, it is difficult to volatilize the water completely, if the paint is sprayed on the surface containing water, due to the relatively small amount of water vapor, it is distributed in a fog on the surface of the object. In the process of paint covering and film formation, water vapor can volatilize away with the volatilization of solvent, after drying, the paint film is closed to the water vapor, and the water vapor left under the paint film encounters climate change, and the water vapor at the lower part of the paint film expands, and the paint film will be jacked up, and the paint bubble is formed, which generally takes 3-5 days.

In summary, the main reason for the occurrence of rice granular paint bubbles in the topcoat is that the surface of the coated object contains water.

Your car is parked in **, is it parked outside in the sun.

This must have been in the sun for too long.

If the blistering area of the car paint is small, you can choose to use the same color paint for spot coating, if there is blistering in multiple parts of the body, then the best treatment can only be to do the whole car painting, otherwise it will affect the appearance of the body very much.

Blistering of the paint may be a problem with the quality of the paint or it may be caused by the touch-up process. Some people say that the slight blistering of the car paint does not need to be treated, and the blistering of the car paint can be eliminated by itself, but this is actually wrong. The paint cannot be ignored, and it needs to be dealt with in time, otherwise the consequences will be serious.

Introduction:

The reason for the bubbles may be that the paint used for the repair paint is not of good quality, and there may be some problems after spraying; In addition, painting requires a good construction environment and certain technology, and there can be no moisture on the paint surface before painting; The paint surface needs to be filled with putty before touch-up.

After that, it should be thoroughly dried in a dry environment before entering the paint room to spray paint; The air duct connected to the spray gun must be kept dry and not allowed for the slightest moisture. If you don't do the above, it may cause the paint to blister.

Slight blistering of car paint needs to be dealt with in time, first of all, blistering will affect the appearance, if you ignore it, the paint may break after a period of time, and then there will be rain in, resulting in rust of the internal metal, and then expand the damage area, damage to the body. Therefore, once you find that the car paint is blistered, you should go to a professional repair shop or 4S shop.

Find a professional to repair it, and if the blistering area is large, you should choose to repaint.

1) Use the correct spray viscosity, spray air pressure, and nozzle diameter.

2) Use appropriate hardeners and diluents.

3) Give enough rest time. Check the air pressure and humidity in the oven regularly.

Remedy. After drying, sand, respray the intermediate paint in the affected area, and then spray the top coat after sanding.

Moist blistering evenly distributes pockmarked vesicles of various sizes and tends to appear in very hot and humid conditions. These bubbles disappear when the air humidity decreases and the paint film becomes flattened.

It is caused by the formation of bubbles due to the inability of air, water or solvent in the paint layer to escape, or the formation of bubble marks after escaping.

1) The paint film is sprayed too thickly, and a hardener or thinner that dries too quickly is used.

2) The spray gun nozzle (caliber) or spraying viscosity or spraying air pressure is incorrect.

3) Insufficient static time before heating and drying or insufficient airflow in the paint baking room.

Of course, if the number of bubbles is large and the volume is large, it is difficult to scrape flat, it is recommended to change a new car film, because at this time, it will not only affect the appearance, but also affect the driving safety.

It is best to go to a repair shop for repairs.

Although the blistering is affected by external conditions, it is difficult to see with the naked eye at first, but it has destroyed the integrity of the coating, and after a long time, the water vapor promotes the complementarity of the coating selection to produce rust last month, and there is no remedy for the time being, but to apply off the coating and recoat.

If the owner buys a new car in a 4S store, it is recommended to go to a 4S store to see the solution and see if the warranty part of the car paint has expired; If it is a second-hand car, it is recommended to scrape it off directly and repaint it; In one case, the car has been painted before, and the operation is not standardized when it is painted, and now it is the result of the reaction.

Precautionary measures. Sealing glaze: In addition to the role of wax, sealing glaze can increase the strength of the paint and prevent small scratches caused by wind and sand on the body. The retention time is relatively long, which can be up to about 3 to 4 months.

Waxing: Waxing is the most traditional and economical method of car paint protection, the main function is to inhibit the oxidation of car paint by external harmful components, anti-ultraviolet rays, and can improve the brightness of car paint to a certain extent. Compared with the glaze, the holding time is shorter.

Coating: The price of coating beauty is generally higher, which is to form a transparent protective film on the body, and its protective ability is better than waxing and sealing glaze, and the retention time is generally about one year. The material of the membrane itself is an inorganic substance and has no damage to the car paint.

This is the quality of the paint, putty, or the primer is not dry and there is moisture on the spray topcoat, after the topcoat is dry, the moisture inside can not come out to form a lot of bubbles, the only way to deal with the treatment is to polish from the new paint, it is recommended to find the manufacturer to rework.

You don't have to bite the 4S shop, and the general repair shop can do it. Unless you're a BMW or more than a car! Blistering is generally caused by moisture, if the paint is not completely dry after spraying, it will also cause blistering when it rains.

I don't think it's a primer, it should be a primer if the putty doesn't dry, because there is moisture in the putty that doesn't dry, it can't evaporate and form bubbles, if you don't deal with it, there will be a situation of barge, it is recommended to re-polish and spray paint, hope to adopt, if you have any questions, please continue to ask.

If you spray it yourself, you still have to find a repair shop to solve it, and if you spray it yourself, you still have to find a repair shop to solve it.

If the primer is not good, if you feel that there is nothing, you can wait for the area to be large and re-paint.

The main reason for the blistering of car paint is that the sealing ability of the middle coating is relatively poor, even if there is water vapor in the primer and middle coating film, it can volatilize through the micropores of the paint film. The paint film of the topcoat layer is relatively closed, especially the two-component paint in the complete reaction, if the paint film contains water vapor, it can not volatilize, and the topcoat film is locally stressed and produces bubbling phenomenon due to the effect of weather temperature and bottom water vapor expansion.

Car paint blistering is one of the manifestations of car paint damage, unfortunately, there are not too many good ways to deal with car paint blistering, if the blistering is small, you can choose to use the same color paint for point coating, but this is just a rainy day, if there is blistering in multiple parts of the body, then the best treatment can only be to do the whole car painting, otherwise it will affect the beauty of the body very much.

The causes of paint bubbles are complex, but the most common causes are paint quality and construction process. Since this aspect of the factor is not controllable by the owner, we can only do paint maintenance to avoid or slow down the possibility of blistering of the car paint.

If the owner buys a new car in a 4S store, it is recommended to go to a 4S store to see the solution and see if the warranty part of the car paint has expired; If it is a second-hand car, it is recommended to scrape it off directly and repaint it;

Photo by Li Yuanli) NIO ES8 NIO ES6 Wenjie M5 NIO EC6 Xpeng P7 Trumpchi GS8 @2019

The main reason for paint blistering is the relatively poor sealing ability of the primer. Even if there is water vapor in the primer and primer film, it can be volatilized through the micropores of the paint film. However, the paint film of the topcoat layer is relatively closed, especially when the two-component paint is completely reacted, if the paint film contains water vapor, it will not volatilize, and under the action of weather and temperature, as well as the expansion of the bottom layer of water vapor, the surface paint film will be partially blistered.

Blistering paint is one of the manifestations of paint damage. Unfortunately, there aren't too many good ways to deal with paint blistering. If the blistering is small, you can choose to spot paint with the same color, but this is just a precaution.

If there are blistering in many parts of the body, then the best way to deal with it is to paint the whole car, otherwise it will greatly affect the aesthetics of the body.

The causes of paint blistering are very complex, but a few common ones are paint quality and application process. Because this factor is beyond the owner's control, we can only do paint maintenance to avoid or slow down the possibility of blistering.

If the owner bought a new car in a 4S store, it is recommended to go to the 4S store to see the solution and see if the paint warranty part has expired. If it is a used car, it is recommended to shave it directly and repaint.