How to prevent peeling problems during epoxy floor paint construction?

1. Poor surface treatment or too smooth foundation is the fatal injury of epoxy floor peeling, and there are oil, wax, water vapor, dust and chemicals on the surface of the coated object before epoxy floor paint coating. or the interval between surface pretreatment and painting construction is too long, and the surface of the coated object should be treated and cleaned before painting, and should be painted immediately.

2. Choose professional construction personnel, some inexperienced construction personnel, the strength can not be controlled during construction, so that the ground has uneven coating film thickness, or enters the next process without drying, resulting in problems such as non-sticky coating and delamination.

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Take steps to prevent blisters:

1) Make a waterproof layer on the base layer to prevent water vapor from seeping upward, control the moisture content in the base or waterproof layer within 8%, and the compressive strength of the base or waterproof layer is greater than 20MPa, and carry out epoxy construction.

2) Improve the adhesion between the epoxy layer and the base or waterproof layer, overcome the swelling force at the beginning of the blister, and avoid the occurrence of blisters.

3) In the construction of epoxy layer, the bottom coating should be made of the best material, first, let part of the epoxy penetrate into the base or waterproof layer up and down to form a whole, second, it is to improve the adhesion, and leave less residual substances or chemical gases after curing.

4) After the epoxy construction is completed, avoid sunlight to reduce the change of temperature difference between the surface and the inside of the epoxy layer.

5) The construction on the base or waterproof layer must be cleaned. There is no gap between the epoxy layer and the base layer or waterproofing after construction.

6) In short, the waterproof material must have the following points in the selection: 1) impermeability and impermeability; 2) Compressive resistance, strength greater than 20MPa; 3) It has super adhesion to the ground; 4) It is easy to bond with epoxy resin to form a whole.

The waterproof layer shall not be allowed to be on the person within 3 days after the completion of the construction to protect the finished product.

Water-based floor coatings have low requirements for the dryness of the substrate, construction tools can be directly cleaned with water, the preparation and construction operation of the coating are safe and convenient, and the coating is non-combustible, non-explosive, safe, convenient for storage and transportation, and avoids the first and fire accidents caused by the improper storage, transportation and use of solvent-based coatings.

Water-based materials can be selected. Suzhou Meiguowang water-based epoxy curing agent, water-based epoxy floor paint.

1. Reason: epoxy floor paint.

Basic surface treatment before painting.

Not good, there are oil, wax, water vapor, dust and chemicals on the surface of the base of the coated object, or the interval between surface pretreatment and painting application is too long.

Treatment: The surface of the coated object should be treated and cleaned before painting, and it should be painted immediately.

2. Reason: Improper selection of primer. If the hardness of the primer is too large, the adhesion between the topcoat and the primer will be lost.

Treatment: A primer with good adhesion and wetting should be selected.

3. Reason: The surface of the coated object is too smooth.

Treatment: The surface of the coated object should be sanded or chemically treated. The old paint surface should be re-sanded.

4. Reason: If the primer is covered with topcoat or varnish before it dries, the coating film is prone to cracking or falling off.

Treatment: Generally, the primer should be completely dried before covering the topcoat.

5. Reason: The coating film is too thick, because the surface layer has dried thoroughly, and the bottom layer dries slowly or not thoroughly, and the topcoat shrinks too much during the drying process, causing cracking and falling off.

Treatment: During construction, it should be noted that the paint film of each paint should not be too thick.

6. Reason: Coating on the surface of damp or mildewed objects makes the paint adhere poorly to the substrate.

Treatment: Masonry, cement and other surfaces should be fully dried and mildew stained before painting.

The main reason for the cracking, peeling and peeling of epoxy floor paint coating is due to poor adhesion and combination between coatings, resulting in problems such as coating peeling, peeling, bulging and peeling.

Causes:1Improper selection of materials results in poor adhesion between the base layers.

2.Improper handling of the foundation ground.

3.The surface of the foundation is unclean, with oil, water or other dirt.

4.The epoxy floor paint base and top coat are not matched, resulting in poor interlayer adhesion.

5.The construction temperature of epoxy floor paint is too low.

6.In the epoxy floor paint primer is not fully dried, the next process is constructed, and the shrinkage rate of the primer surface layer is inconsistent, resulting in cracking, which affects the interlayer adhesion.

Summary. Hello, epoxy floor paint peeling is likely to be the foundation surface is not treated well.

Hello, epoxy floor paint peeling is likely to be the foundation surface is not treated well.

Or the construction personnel are not skilled and the construction is uneven.

It's also possible that the materials you're using are too poor.

Before using epoxy floor paint, the foundation surface needs to be treated.

Clean before painting.

Also, try to choose some more moist primers with adhesion.

The paint film should not be too thick.

Epoxy floor paint has always been a ground decorative coating with high utilization rate in the floor industry due to its high hardness of paint film, good adhesion, strong adhesion between the coating and cement, wood, metal and tile surface, and good wear resistance and impact resistance. And in the actual use process, supporting primer, middle coat, mortar, etc., in order to achieve a good coating effect.

In a period of time after the construction of the floor paint is completed, there are adhesion problems between some epoxy resin floors and the base layer, such as: epoxy floor coating peeling, peeling, peeling, peeling.

The main reasons for the peeling of epoxy resin floor paint and detachment from the base layer are as follows:

1. Improper treatment of the base layer: there are other impurities on the ground, such as oil stains, water dissolved substances, rust stains, etc., which are not cleaned; or the smoothness of the base surface is too high, no brushing has been carried out or an inferior sealing primer has been chosen.

2. The recoating time between the coating layers is too long: during the construction process, the interval between the construction is too long, resulting in dust impurities continuing to appear on the ground surface.

3. The coating film is too thick: because the surface layer has dried thoroughly, and the bottom layer has dried slowly or not thoroughly, cracking and falling off due to excessive shrinkage of the topcoat during the drying process.

4. The moisture content of the base layer is too high: if the construction is carried out on the ground with too high moisture content, there will be a risk that the epoxy floor paint layer will be separated from the ground, and the lower the moisture content, the better the bonding performance.

5. The base is too loose: for the loose ground, the loose layer should be removed before construction, otherwise the epoxy floor coating will fall off with the loose concrete layer.

6. There is no drying treatment on the base surface: or the drying treatment is insufficient, resulting in the phenomenon of unstable coating falling off when the floor paint manufacturer is carrying out the floor paint construction.

Methods to prevent peeling and peeling of epoxy resin floor paint:

1. The floor paint construction unit needs to clean the surface of the ground that is about to be constructed, and the oil and debris on the foundation ground must be cleaned up.

2. After dealing with the base surface, the time to wait for the construction of the floor paint can not be too long, generally about 3 or 4 hours, and the construction will begin. It is also possible to dry the ground at the same time.

3. It is necessary to choose high-quality primer materials with good adhesion to ensure that its adhesion can adapt to the base material.

4. The strength of the cement floor needs to be above C25, and if the sand and ash phenomenon is serious, it must be reinforced before the epoxy floor paint construction can be carried out.

5. The basement and other places must be made of waterproof layer, and the new cement floor must be maintained for more than 28 days to ensure that the moisture content is not higher than 8% before the epoxy floor paint construction can be carried out.

1. Before construction, the base surface must be treated to ensure the excellent adhesion between the substrate and the floor. The moisture content of concrete should be 8% (measured with a moisture content tester), the concrete substrate should be cured at room temperature for at least 30d, the cement protrusions of the substrate should be removed during construction, the defective cavities at the cracks should be repaired, and the oil stains should be removed (the unevenness of the floor should be removed, and the construction suitable for the second step has been reached), and then the grinding treatment should be carried out.

2. Due to the one-time thick film molding of epoxy self-leveling floor, it is not easy to repair, so it is necessary to check the strength, humidity, compactness, flatness and other indicators of the base layer before construction. (The strength, humidity, compactness, and flatness of the base layer are very important, and you should pay attention to checking).

3. During construction, the operation area should be formed once and again to avoid problems such as missed inspection, stacking, uneven thickness, and long connection time between each block.

4. During summer construction, it is necessary to adhere to the principle of "special batching, multiple small quantities, and continuous production". During winter construction, it is necessary to avoid the environment of low temperature and high humidity, the curing reaction of epoxy resin is slow at low temperature, and the free amine in the amine curing agent is easy to precipitate and whiten due to moisture, which affects the quality of the coating film. If it must be constructed in this environment, it should also be applied after the coating is mixed and cured for a while, so that part of the amine and epoxy resin can be combined to form intermediates, which can not only release heat and heat to promote the reaction, but also facilitate the miscible between the two phases, and reduce the disadvantages such as shrinkage porosity, orange peel, and whitening (pay attention to and maintain the awareness of not reworking during the construction process).

5. Usually the floor construction temperature is 5 35. The viscosity of self-leveling coatings is greatly affected by temperature, and self-leveling coatings with suitable viscosity at low temperatures will be difficult to apply because the viscosity is too low when scraped at high temperatures. Self-leveling coatings with suitable viscosity at high temperatures are too viscous to scrape at low temperatures, and the surface is not easy to level.

If the airless spraying method is used, it is relatively less affected by temperature. Good results can be obtained at the right temperature.

The ratio is correct, and there is no cross-operation.

Causes of peeling of epoxy floor paint:

1. Poor quality of epoxy resin material will lead to undurable ground, peeling, delamination, discoloration, cracking, etc.;

2. Failure to construct in strict accordance with standards and cutting corners will lead to undurable ground, peeling, delamination, cracking, etc.;

3. The ground is not made of moisture-proof layer, which will lead to epoxy floor bubbling and delamination;

4. If the ground is not cleaned, it will lead to delamination and peeling of the epoxy floor;

5. If the amount of epoxy material is too small, it will lead to the ground being exposed;

6. If the ground shrinkage joints are not repaired, it will lead to ground cracks;

7. Epoxy flooring will cause fading under the irradiation of the sun;

8. Construction in bad weather or environment will also lead to quality problems.

Treatment method: 1. Choose a good quality epoxy resin material;

2. Construction in strict accordance with construction standards;

3. Make a moisture-proof layer before ground construction;

4. Clean the ground before construction;

5. The amount of materials is in accordance with the requirements of the manufacturer, and no corners are cut;

6. Deal with the ground shrinkage joints before construction;

7. Epoxy flooring material is not suitable for outdoor use;

8. Construction in the suitable environmental weather of epoxy flooring.

Failure to do a good job of waterproof and moisture-proof treatment causes water seepage of the paint to destroy the adhesion of the floor and the coating bubbles and delamination damage. If the construction has not been completed, first paint the polymer waterproof coating on the concrete base surface and then pour the concrete protective layer, if it has been constructed for a long time, brush a three-silver paint cover paint waterproof.