What can be added to water based epoxy floor paint to slow cure

First of all: the synthesis of water-based epoxy curing agent is based on polyamine, and by introducing molecular segments with surface activity into its molecule, it becomes an amphiphilic molecule, which can be well dispersed or dissolved in water, so as to play a good emulsifying effect on low molecular weight liquid epoxy resin. Therefore, this type of curing agent must be both a crosslinker and an emulsifier.

Liquid epoxy resin is mixed and emulsified by a water-based epoxy curing agent before use, and because liquid epoxy resin has good workability, it can be formed without the addition of film-forming additives, so the system is usually formulated as a zero-VOC system. Secondly: waterborne epoxy resin coating is an emulsion coating, its film-forming mechanism is very different from the film-forming of general polymer emulsion coatings such as acrylic emulsion, water-based epoxy resin coating is a multiphase system, epoxy resin is dispersed in the form of dispersed phase in the water phase, and the water-based epoxy curing agent is dissolved in water.

The system after mixing the two components is coated on the substrate, and the water evaporates quickly under the suitable temperature conditions. When most of the water evaporates, the epoxy latex particles come into contact with each other to form a tightly packed structure, and the residual moisture and curing agent molecules are in the gap between the epoxy dispersed phase particles. As the water evaporates further, the epoxy dispersed phase particles begin to condense to form a tighter hexagonal arrangement. At the same time, the curing agent molecule diffuses to the interface of the dispersed phase particles of the epoxy resin and undergoes a curing reaction within it.

Finally: Waterborne epoxy floor coatings require curing agents with low viscosity, long service life, superior chemical resistance and physical and mechanical properties, good color retention and low toxicity.

You can add more water to dilute, because the primer of water-based epoxy floor paint can be constructed with water, which is mainly reflected in the three processes of bottom coat, middle coat and putty layer, and after adding water, it can slow down the chemical reaction of epoxy resin and water-based curing agent, form a good fluidity, and be more conducive to construction, but be careful not to add too much water, adding too much water will affect the drying time, reduce hardness and adhesion, and adhesion. Water cannot be added to the top coating, and the addition of water will cause whitening, blistering, and bottom leakage.

Primer with water construction.

KRn990 is a metal-polymer-type crosslinker with a wide range of applicability, and can be used in alcohol-soluble systems. KRn990 is stable in storage, can react with carboxyl hydroxyl groups in the system, forms a dense film, and improves water resistance. In addition to its excellent cross-linking reaction in the aqueous system, it can also play a role in drying, curing, and hardening in the epoxy system.

To a certain extent, the epoxy system drying problem and wet film problem are solved.

In addition, it is applied to the closed bottom of wood paint, which exerts its good cross-linking, and effectively achieves the effect of anti-tannins and anti-tendons.

It can also be applied with water-based coatings, water-based inks, water-based adhesives, water-based metal surface treatment agents, etc.

During the construction of water-based epoxy floor paint, the drying time of the material determines the construction efficiency, which is mainly divided into surface drying and drying. The surface dryness is reflected in the drying time of the surface of the brushed material, and the hard work is reflected in the drying time of the bottom layer and surface of the brushing material, which reaches hardness. The surface dry is the drying time that the surface paint film is formed into a solid and non-sticky surface through physical volatilization or component reaction, and the surface dry of various coatings of water-based epoxy floor paint is less than 4-6 hours.

Solid is the drying time that the solid can reach both internal and surface hardness after the surface is formed as a paint film solid, and the drying time of various coatings of water-based epoxy floor paint is within 24 hours.

Surface dry and dry are easily affected by the external environment, humidity and temperature have a greater impact on it, the same coating material in different environments surface dry and dry time is different, the above time we say is only the test results in the ideal environment. The exact duration depends on the site and construction technology.

High temperatures

High temperature will advance the drying time, especially in summer, when the temperature exceeds 25 degrees Celsius, the drying time of the paint film is shortened, so we pay attention to the construction time control.

Low temperatures

The temperature is too low to prolong the drying time, especially in winter, the temperature in some areas is a few degrees below zero, especially in the north, when painting the floor material, pay attention to the drying time, generally extend the day. At this time, we need to observe the drying time, and when it is completely dry, we will move on to the next painting work.

Wet

Due to the presence of water in a humid environment, the chemical reaction of the paint film will be prolonged, and the drying and surface drying time will also be prolonged, so it is necessary to pay attention to observation.

In addition, the surface drying and drying time are also related to the construction process.

Before construction, the mixing ratio of AB component of waterborne epoxy floor paint material and whether the stirring is uniform have an impact, and insufficient stirring will lead to changes in the curing time of the paint film. Therefore, we try to follow the instructions provided by the water-based floor paint manufacturer.

The drying time is affected by the different thickness of the brush, and the different thickness of the water-based epoxy floor paint primer will also affect the drying time. Pay attention to the construction as much as possible to paint evenly, the strength is uniform, and the thickness of the roller brush is basically the same. It can prevent the situation that is almost a little bit dry while drying, and the situation that is good and bad in the next step of construction.

There are many influencing factors for the surface dryness and solidification of water-based epoxy floor paint, we must pay attention to observation and testing, and must wait for it to be completely dry before proceeding to the next process.

Step 1: Ground Treatment:

Sweep the floor and keep it dry (moisture content less than 8%)

Step 2: Apply the water-based epoxy floor paint primer:

After stirring the main agent evenly, then slowly add the curing agent to the main agent, and at the same time continue to stir quickly to ensure that the mixture is even, add 10%-20% water, quickly stir and dilute to the appropriate construction viscosity, and continue to stir until it is uniform.

Step 3: Brush water-based epoxy floor paint topcoat: the use method is the same as the primer, after stirring evenly, you can brush the first water-based epoxy floor paint surface after brushing and curing for 12 24h to start painting the second time, the method is the same as the first time; After the second water-based epoxy floor paint is brushed, it can be cured for 24h (25) before it can be put on the person (the temperature is appropriately extended at the bottom);

Precautions. 1.The minimum coating temperature is not less than 10, and the coating humidity must be between 50% and 80%. The recoat time (25) must be greater than 40 minutes.

2.In order to prevent contamination of the edge part of the construction and keep the processing area completely straight or the boundary line with the uncoated part, the face protection tape should be affixed.

3.Add no more than 20% of the water (paint weight ratio), too much water will cause the performance of the paint film to decrease, such as hardness, adhesion strength, gloss, etc. After mixing, use as soon as possible.

4.The blended paint can be used within 1 hour (25 years), and higher or lower temperatures will change the length of the blending shelf life.

5.At a temperature of 25C and 50% relative humidity, finger dry for 4 hours. The initial curing can withstand the human walking time of 48 hours, the full curing takes 7 days, and the drying time will be extended accordingly due to low temperature, humidity, too thick paint film or poor ventilation.

Now the construction of water-based epoxy floor paint on the market is too complicated, and the comprehensive construction cost is much more expensive than oil-based materials, so many people would rather use water-based polyurethane for construction, in fact, many water-based epoxy floor paint formula direction is wrong, what emulsification, what price cement, these are all in the wrong direction, has been out of the direction of epoxy, to do a good job of water-based epoxy floor paint has to return to the direction of the adhesive reaction of oily epoxy materials in order to make high gloss, high wear resistance, high hardness, and is a molding, This orientation of the water-based material does not require a glossy layer. In fact, there are many factories to this aspect of research and development, but the technology is not mature, unstable are not willing to launch the market, but this direction is correct, in fact, there has been a molding 80 degrees of high gloss on the market without overshadowing, a molding hardness of 3h without cement, a molding high wear resistance water-based epoxy floor paint, this called Yue Fengshuo water-based epoxy floor paint products have been tested in South China for two or three years, this year has been to the national market, their formula construction is as simple as oil-based materials, The amount is not much different, many people do not believe, find a variety of ways to try their materials, the result is really a molding high gloss and high hardness, high wear resistance, it is understood that it is currently the only one, and people also made a water-based epoxy artesian plane paint, is the first in the country, the series of products have been perfected this year, but many manufacturers even water-based epoxy flat coating can not do well, not that we have no efforts, is the wrong direction, efforts are in vain!

Their basic construction process is:

1. Ground grinding;

2. Brush the primer;

3. Apply mortar in the brush;

4. Medium coating grinding;

5. Scrape the putty layer to color and seal;

6. Batch scraping surface coating.

Get it, the top coating is formed at one time, high gloss and high wear resistance, and the comprehensive construction cost is only more than 1 yuan per square meter more expensive than oily materials.

The construction steps of water-based epoxy floor paint are also divided into five: first carry out base surface treatment, polish and clean it, then paint the closed primer, then scrape the mortar layer and putty layer in batches, mix the main paint and curing agent according to the ratio, add quartz sand and putty powder, and finally the upper paint. In the current market, most of the water-based flooring should be made mortar layer when constructing, otherwise it is easy to have epoxy floor problems.

1. Ground grinding: Use a grinder to polish and level the parts of the ground such as cement slag above the ground to remove the ground ash. Other treatment measures are used for loose and oily ground.

2. Primer: After the concrete substrate is processed and cleaned, the primer (roller coating or brushing) can be carried out, and the roller coating or brushing should be even.

Uniform, consistent thickness. The primer has a certain water vapor permeability, which can enhance the strength of the substrate and increase the adhesion of the coating to the substrate.

3. Intermediate coating: Quartz sand and quartz powder are added to the prepared water-based epoxy coating (intermediate coating) to form a water-based epoxy mortar, and it is evenly coated with a trowel to increase the thickness and compressive strength of the coating.

4. Batch supplement: After the middle coating, the floor is polished with sandpaper, and the putty composed of water-based epoxy paint (medium coating) and quartz powder is constructed according to the actual needs, and it is required to be smooth and no holes, and there is no batch of knife marks and sanding marks.

5. Putty batch supplement: the use of primal coating materials is deployed according to the proportioning method of primal coating materials, and the surface can be directly coated in polishing without adding water.

layer is scraped onto the layer. If necessary, you can appropriately add finer quartz powder or heavy calcium powder to make up, and polish it as a whole with fine sand disc paper after the batch is finished, and the reference amount of the material is supplemented.

6. Topcoating: Applying the water-based epoxy floor coating to the surface coating, the surface coating roller coating is applied twice, and the overall ground gloss is required to be soft, clean and uniform after completion.

1. No empty drums.

7. Maintenance: It takes 24 hours for the surface layer to be dry, and it should be closed during this period, so as not to affect the clean and smooth effect of the surface. 3D can be uploaded.

people, 7 days after the completion of maintenance can be officially put into use (25 shall prevail, low temperature needs to be moderately extended).

Key points of the construction method of water-based epoxy floor paint: 1. Ensure that the ground is clean before construction, stir the AB component evenly before use, and remove any debris adhesion; 2. Mix the epoxy resin and the curing agent in the correct proportion, and add water and ingredients in strict accordance with the instructions for use when the material is used. 3. After fully stirring evenly, apply the method of scraper or roller application.

4. It is required to be soaked to strengthen the adhesion. 5. After drying, apply the epoxy middle coating.

Water-based epoxy floor paint with curing agent pungent pro! Hello, I am very happy to answer your <>

Pro-epoxy flooring is mainly composed of epoxy resin, solvents, additives and additives, which has the advantages of dust-free, smooth and beautiful, and is widely used in life and underground garages. Many factories and stadiums are common. But many epoxy floor paints often smell some odors during construction or construction, are they harmful to the human body?

Let's take a look at the causes of odors from epoxy flooring and how to eliminate them. Epoxy flooring 1The cause of odor on epoxy flooring.

The main reason for the odor of epoxy flooring is the curing agent of epoxy flooring, which is divided into oil-based curing agent and water-based curing agent. Among them, benzene such as xylene is commonly used in oil-based curing agents, which will volatilize into the air with construction, and will produce a pungent odor when used, which is the cause of peculiar smells. In addition to the odor of the epoxy floor itself, it may also be the manufacturer's reason.

The use of inferior epoxy floor paint by manufacturers will also cause the odor of epoxy floor paint. In order to save costs cheaply, manufacturers have added some cheap and harmful substances, which lead to the volatilization of epoxy flooring and peculiar smells. 2.

Epoxy floor deodorization. Benzene such as dimethyl jujube benzene volatilized by epoxy flooring has a certain toxicity and cannot float in the air and should be removed in time. Here are a few ways to remove epoxy floor odors; (1) Natural deodorization.

Natural deodorization refers to isolating the construction area for a period of time after the construction is completed, and removing the odor in the air through the circulation of natural wind and air. This method is suitable for construction sites with light odor and good ventilation. This method is not recommended if the ventilation is not smooth.

2) Fan deodorization. In the case of poor ventilation, auxiliary means are required to remove the odor. Exhaust fans are a good way to deodorize and can effectively reduce indoor odor after construction.

Other devices that circulate air can also be used to speed up odor expulsion. (3) Adsorption and deodorization. Adsorption and deodorization is a common deodorization method in life and construction, that is, the use of activated carbon adsorption and deodorization, which can well absorb the odor in the deodorized air.

When choosing activated carbon, we should choose plants over wood. The vitamin bundles of herbaceous plants are denser than those of woody plants, and the adsorption capacity is stronger. A large amount of bamboo charcoal powder can remove the flavor as soon as possible.

In the deodorization process, the activated carbon should be replaced in time to achieve a better deodorization effect. 3.How to avoid the odor of epoxy flooring.

Not all epoxy flooring contains xylene, and waterborne epoxy flooring is free of benzene volatile substances, non-toxic and odorless. Therefore, the choice of water-based epoxy floor paint can well avoid the peculiar smell of epoxy flooring, and the quality and construction strength of water-based residual silver demolition epoxy floor can also meet the needs of the site. In order to avoid the peculiar smell of epoxy flooring, we should start with the manufacturer and choose a manufacturer with good reputation and good qualifications.

Even if the oily epoxy floor has some odor, it will slowly disperse and will not last long. Generally speaking, the deodorization of epoxy flooring should start from the root. First of all, choose the best manufacturer to buy epoxy floor paint.

Choose an epoxy floor paint.