Why add defoamer in epoxy floor construction

1. Because foam is formed in the process of miscible stirring with other surfactants, it causes volume expansion and reduces the utilization rate of blending equipment.

Second, because the foam limits the speed of stirring, the mixing time is prolonged, and the filler and dye can not be fully wetted.

3. The packaging barrel cannot be filled when foaming, and the weight of the packaging barrel will be uneven after the foam gradually disappears, which will interfere with continuous packaging.

Fourth, the foam lasts for a long time, resulting in poor fluidity, surface defects, unevenness, and rupture during film formation during construction.

Therefore, it is necessary to add epoxy floor defoamer during construction.

Hello, the reason why epoxy floor defoamer is added in the process of epoxy floor construction is because the generation of foam has caused a great impact on the operation. Foam will affect the final quality of construction, and porosity and other phenomena will also appear.

Epoxy floor paint will be used in the construction process of epoxy flooring, and if there is a blistering problem in epoxy floor paint, it may affect its performance, and the appearance of construction will be problematic, and the whole construction process will be extended, and the cost will be increased.

Because there will be a large number of bubbles during the stirring process.

If the construction process cannot be eliminated, it will affect the final quality.

These bubbles need to be eliminated to improve the quality of construction.

1. Dosage: The amount of defoamer should be appropriate, this is the dosage must be tested on the basis of the recommended dosage (including laboratory tests and field tests) to determine the best dosage, the defoamer is not used as much as possible, nor is it used as little as possible;

2. Stirring: Even if the defoamer is not layered, it is best to stir it well before use. If layered before use, it must be stirred well;

3. Dilution: The body-type defoamer does not need to be diluted before use, and it is not recommended to dilute. The emulsion type defoamer with low solids content does not need to be diluted and can be used directly; The emulsion defoamer with high solid content can be diluted, but the method must be followed, otherwise there will be demulsification stratification and other phenomena, and the gains outweigh the losses;

4. Environment: Different defoamers should be used in different environments, and the selection of defoamers should take into account the defoaming performance, foam inhibition performance, compatibility, etc., and the temperature, pH, and foaming substances in different application environments are different.

Floor paint defoamer is an additive used in the production process of floor paint, and its main role is to eliminate the foam generated in the production process of floor paint.

In the production process of floor paint, due to the chemical reaction of solvents, additives, fillers and other components in the paint and the gas generated during the mixing process, it may lead to foam in the production process of floor paint. This foam not only affects the appearance and quality of the floor paint, but can also hinder the production process.

Floor paint defoamers are able to eliminate these foams for the following reasons:

Floor paint defoamer has good foaming properties and can be adsorbed on the surface of the foam, thus forming a protective film, thereby inhibiting the formation of foam.

Floor paint defoamers can change the surface properties of the foam, making it less stable and easier to eliminate.

Floor paint defoamers are able to form an adsorption layer inside the foam, thereby inhibiting the expansion and stabilization of the foam.

In short, floor paint defoamer can effectively eliminate the foam generated in the production process of floor paint, and improve the quality and production efficiency of floor paint.

In the process of industrial production, if there is a large amount of foam, it will bring a lot of trouble to the production process, such as the production capacity will be greatly limited; resulting in waste of raw materials and products; affect product quality; In fact, a lot of foam can be eliminated by defoamers. Defoamers generally eliminate foam in the following two ways.

1.The defoamer diffuses in the foam, and forms a double-layer film on the foam wall during diffusion, and the surfactant with a stabilizing effect is discharged during the diffusion process, which reduces the tension of the local surface of the foam, destroys the self-healing effect of the foam, and bursts the foam.

2.The defoamer may enter the foam wall, but only to a very limited extent, and together with the blowing agent it forms a mixed monolayer that bursts if the monolayer is not cohesive.

There are still a lot of defoamers, you can find them in Alibaba, there will be recommendations.

1. There are many reasons for the blistering of epoxy resin wear-resistant floor paint after construction

1. The temperature is too high, resulting in the epoxy binder has softened and the viscosity is greatly reduced;

2. The base layer of the floor is damp and watery, and water vapor cannot be excluded;

3. The combination of epoxy and base construction is not good, leaving gaps, etc.

To sum up, part of the water vapor, epoxy residue and gas of the base layer are wrapped in the epoxy and the base layer, forming bubbles of different sizes, because the epoxy layer itself is impermeable to water vapor, the water vapor can not be discharged, leaving blistered roots and seedlings.

2. In order to prevent blisters in the epoxy layer, it is necessary to eliminate three things in the construction of epoxy floor paint: water, exposure to the sun, and dust. The effective measures to prevent the formation of blisters are as follows:

1) Make a waterproof layer on the ground base to prevent water vapor from seeping upward, strictly control the moisture content in the base or waterproof layer within 8%, and the compressive strength is greater than 20MPa, and then 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: let part of the epoxy penetrate into the base or waterproof layer to form a whole; Improves adhesion and leaves less residue 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) In the construction of the base or waterproof layer, the dust and debris must be cleaned up. There is no gap between the epoxy layer and the base layer or waterproofing after construction.

Today, I will briefly introduce the four major precautions for the use of defoamers for epoxy floor paint.

1. Dosage: The amount of defoamer should be appropriate, this is the dosage must be tested on the basis of the recommended dosage (including laboratory tests and field tests) to determine the best dosage.

2. Stirring: Even if the defoamer is not layered, it is best to stir it well before use. If layered before use, it must be stirred well;

3. Dilution: The body-type defoamer does not need to be diluted before use, and it is not recommended to dilute. The emulsion type defoamer with low solids content does not need to be diluted and can be used directly; The emulsion defoamer with high solid content can be diluted, but the method must be followed, otherwise there will be demulsification stratification and other phenomena, and the gains outweigh the losses;

4. Environment: Different defoamers should be used in different environments, and the selection of defoamers should take into account the defoaming performance, foam inhibition performance, compatibility, etc., and the temperature, pH, and foaming substances in different application environments are different.

The above are the four major precautions for the use of defoamers for epoxy floor paint.

Defoamers for epoxy floor paints can be added before and after foaming, regardless of temperature and pH.

Add defoamer for epoxy floor paint to know the temperature, pH and amount added.

When adding defoamer to epoxy floor paint, pay attention to pH, temperature and other issues.

Generally used.

Epoxy flooring. Paint defoamer.

It can be applied to the production and application system of epoxy primer, and effectively plays a role in defoaming.

Gaotian company has a special defoaming additives for epoxy floor paint, it is recommended that you can choose the best epoxy floor paint defoamer, which can not only defoam and inhibit foam, and the coating system is very compatible, mixed use without worrying about shrinkage porosity. And **affordable, if necessary, you can go to Tianjin Gaotian official website for consultation. Web Links.

Due to the high viscosity of epoxy floor paints, air bubbles are more difficult to eliminate.

Therefore, when choosing defoaming, it is necessary to choose a defoamer with strong defoaming ability, and Jintuan keperpol-766 also has excellent performance in epoxy flooring, and does not affect self-leveling.

Of course, there is also an acrylic defoamer to choose from, which is Jintuan Kepersurf-732.

Epoxy floor paint** is generally between 16 yuan and 90 yuan. It is mainly determined by the construction area and construction technology, Shenzhen Mingcheng floor paint company.

Generally, epoxy floor paint defoamer is used, which is a composite product of polyether modified silicone and mineral oil, refined by special process. In particular, it has excellent effect on fine foam, and has the advantages of low dosage, long foam inhibition time and good water dispersibility. Widely used in:

Epoxy paint, epoxy floor paint, PU floor paint, water-based epoxy paint, rubber industry polymerization, coagulation and degassing process, polymer glue, etc.

Features of defoamers that can be used for epoxy floor paints:

Stir well. The defoamer can be added and used directly, stirred thoroughly, and stirred evenly. It is not recommended to use dilution as this will directly affect the amount added.

The amount added is more or less.

As I have just said, it is recommended not to dilute the use, which will directly affect the amount of defoamer, and the more defoamer is added, the better, adding too much oil bleaching, shrinkage holes, demulsification and so on; Too little addition will directly lead to poor defoaming effect, with small bubbles remaining, and the antifoaming performance cannot be maintained for a long time.

The defoamer can be added in two steps.

The defoamer can be added in two times, the first time half of the total amount is added when preparing the floor material, and the other half is added after the second grinding, so that the defoamer can fully exert its performance.

1. The foundation ground is not sealed.

2. There is a problem with the epoxy floor material.