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What paint sticks?
Is it a car? How can the paint be sticky!
If it is sticky, it can only be painted from scratch.
If it is the paint of other items, it is sticky.
It's just not dry.
The easiest way is to go to the paint room and bake it.
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Paint sticky treatment method:
1) Mix according to the requirements of the manual, and stir fully before use.
2) One painting should not be too thick, generally millimeters.
3) Each brush must be dried, sanded and then applied for the second time.
4) Pay attention to the changes in environmental conditions, and do a good job of moisture-proof and low-temperature prevention.
5) Thoroughly remove oil stains and pine resin from the surface of the coated object.
Causes of sticky paint:
1) Poor paint quality. The resin content in the paint formula is low, or the solvent with poor volatility or contains non-drying and semi-dry oils; The use of paint that has been stored for too long or the use of tung oil with too low refining temperature will also make the paint film dry slowly and sticky back.
2) The paint is too thick, so that the oxidation only occurs on the surface, the solvent at the bottom layer cannot volatilize, and the paint film can not be fully dried.
3) Mixing different types of paint phase or using excessive driers will cause the paint to dry very slowly (causing the surface conjunctiva to seal and make the inner layer dry slowly), and even cause re-adhesion.
4) Poor construction environment. The paint film is subject to cold, rain, smoke, acid, reduction or moisture.
the invasion of qi; or paint in a humid and airtight room; or in the rainy season and foggy days, there is a large amount of moisture accumulated on the surface of the object; In addition, in the cold season, when painting slow-drying paint, there is no appropriate amount of drying agent added to the paint, or the moisture of the boudoir is too small when coating the large paint, etc., which is easy to cause the paint film to dry slowly or sticky.
5) Improper surface treatment. The residual oil, acid, minus, salt, etc. on the surface of the object are not completely removed, the pine resin, wax, and asphalt are not removed, and the primer is applied before it is completely dry, which will cause slow drying or local stickiness, and some even do not dry for a long time.
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Summary: The remedies are as follows:
1. If it is caused by adding too much slow-drying solvent to the paint, an appropriate amount of dry solvent thinner should be added to the paint.
2. If it is a curing agent added to the paint.
If the amount is not enough or is not added, an appropriate amount of curing agent should be added to the paint according to the correct preparation ratio.
3. If the construction surface is polluted and becomes unclean, the construction surface should be cleaned to avoid pollution.
4. If it is because of the sudden rainy day during construction.
If the surrounding humidity is too high, then you should let the construction site.
Maintain good ventilation so that the solvent in the paint can be fully volatilized.
5. If the paint is applied very thickly, the construction interval of each layer of paint is too short, and the paint film has not dried before the next construction is started.
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<> "First, how to remedy the stickiness of paint.
If the air is too humid and causes the stickiness, you can open the doors and windows in the area and fully ventilate the paint to promote the drying of the paint and solve the problem of sticking.
If it is caused by the thick paint layer, the paint surface can also be removed, and the thickness of the paint layer can be reduced, which can make the paint dry better and avoid back sticking.
If it is the re-adhesion caused by the dust on the surface of the paint layer, the dust can be cleaned when the surface is relatively dry, and there will be no more re-adhesion after subsequent drying.
2. How to prevent the problem of paint sticking.
In addition to some later drying, environmental and thickness problems, the paint will also be caused by improper operation in the construction, for example, more slow drying agent is added to the paint, and it cannot be completely volatilized after construction, and it will naturally produce back sticking, so the amount of slow drying agent should be strictly controlled during construction.
At the same time, if the curing agent is not added enough, it will also produce back-sticking, so it is also necessary to control the proportion. It is best not to apply paint in weather with high humidity, such as rainy season, southerly wind, etc., the humidity is extremely high, and ventilation cannot take away moisture. If there is such extreme weather during the dry period, it is necessary to close the doors and windows in time to avoid moisture ingress, and at the same time use a dehumidifier.
In the construction, we must pay attention to the thickness of the coating, and at the same time wait for a period of time after painting a layer, let it dry and then apply the next layer, otherwise the construction will also cause back sticking when it is not dry. During construction, some protective measures should be taken to avoid freezing, frost, rain, etc.
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Slow drying means that the drying time of the paint film after the paint is applied exceeds the specified standard. Stickiness refers to the phenomenon that the paint film is still sticky when touched with your fingers after a few days of drying, or the paint film is dry and not sticky, and then softens and sticks after a long time. The two pathologies of slow drying and stickiness appear almost at the same time, and the original garden is:
The paint is too thick, so that the oxidation is limited to the surface, the solvent at the bottom can not be volatilized, the paint film can not be fully dried, different types of paint phase mixing or the use of excessive driers, will make Jiang dry very slowly, resulting in the surface conjunctiva sealing, so that the paint film inside the layer of dry slow or even back sticky, poor construction environment, paint film by cold, rain, dew, moisture and other invasion or in the humid and air circulation of indoor coating, or in the rainy season, foggy construction, a large amount of moisture on the object, In addition, in the cold season, coating is easy to cause slow drying or sticky surface treatment, the surface of the object has residual oil, acid, alkali, salt, etc., and the pine resin, wax, asphalt that has not been completely removed has not been wiped clean, and the primer is not dried to apply the topcoat, etc., which will cause slow or local stickiness, and some even do not dry for a long time.
To prevent the phenomenon of slow drying of paint, it is necessary to choose high-quality paint for the situation described above, do not mix different types of paint, peel off the object must be treated before painting, remove dirt and moisture, the bottom layer paint is not able to be painted with topcoat, when the pine resin that is easy to remove in water should be closed with a sealing primer and then painted, for the long-term adhesive coating must be washed off with gasoline or alkaline water.
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Maybe it's not the right proportion. Most floor paints are 1 (lacquer): 1 (hardener). If you're in this proportion, it's not the cause of lacquer. You can come over to the owner of the paint shop you bought to see if it is the cause of the paint.
You can't brush the curing agent on it, the curing agent will be white mist when it dries, then your place will be white and flowery.
If the proportions are not right, then you have to refresh the paint off and apply the correct ratio of floor paint on it.
If it's the cause of lacquer, ask the owner of the paint shop to deal with it for you.
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Baoshan lacquer. Guidance:
The main reasons for this phenomenon are:
1) The ratio of two-component or multi-component paint is improper, and the curing dose is too small.
2) The paint film is too thick.
3) When applying, the first paint is not dry and the second coat is applied, resulting in the formation not drying and the surface layer drying.
4) The environment is too humid and the temperature is too low.
5) The lacquer contains oil, pine resin, etc.
6) Poor painting skills and skills.
Prevention methods: 1) Mix according to the requirements of the manual, and stir fully before use.
2) One painting should not be too thick, generally millimeters.
3) Each brush must be dried, sanded and then applied for the second time.
4) Pay attention to the changes in environmental conditions, and do a good job of moisture-proof and low-temperature prevention.
5) Thoroughly remove oil stains and pine resin from the surface of the coated object.
Lacquer treasure. Integrity is like a mountain.
A bloody case caused by a bun.
If there are particles on the surface of the paint, it means that you did not mix evenly when mixing, if there are particles if you do not mix evenly, you can sand it off, and then repaint the topcoat to make up for it.
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