What are the main components of oil paint defoamers? What are the precautions when adding?

The main components of oil-based paint defoamers generally include polyacrylate, silicone oil, polyvinyl alcohol, alcohol compounds, etc. These components can effectively reduce the surface tension of the coating system, so that the bubbles can burst and achieve the purpose of defoaming.

1.Choose the right type of defoamer: Choose the right defoamer based on the type of coating, the field of application and the performance requirements.

2.Control the amount of adding: the amount of defoamer should be adjusted according to the actual situation of the coating, generally speaking, the more the amount added, the more obvious the defoaming effect. At the same time, however, it is important to note that excessive amounts of defoamer may affect the performance of the coating.

3.When to add: Defoamers can be added during the coating production process or before painting. In general, it is better to add a defoamer during the grinding and mixing phases.

4.Testing the defoaming effect: The performance of the defoamer needs to be tested and evaluated in real-world applications, and adjusted according to the test results to achieve the best defoaming effect.

5.Consider the compatibility of the coating system: the defoamer should have good compatibility with the coating system to avoid precipitation, delamination and other phenomena.

6.Precautions for storage and use: Oil-based paint defoamer should be stored in a sealed, cool, dry place, away from direct sunlight and high temperatures. During use, contact with ** and eyes should be avoided, and corresponding safety precautions should be taken if contact is required.

Oil-based paint defoamers are generally silicone defoamers with polysiloxane as the main raw material, aiming at foam problems such as paints, varnishes, epoxy floor paints, primers, topcoats, and wood paints. Before using the oil-based paint defoamer, it should be stirred evenly, and poured directly or dropwise when used; If used after layering and stirring, it will not affect the effect; The recommended dosage can be increased or decreased on a case-by-case basis.

Paint defoamer is to see what composition of the coating, can be attributed to the silicone defoamer or mineral oil defoamer, specifically to see the composition of the coating, according to the raw materials of the paint to configure the defoamer. Then list the ingredients of the defoamer for your reference:

1.Defoamers based on natural products: animal and vegetable oils and fats, mineral oils and compounds, etc.

2.Polyether defoamer: block copolymer with polyoxyethylene polyoxypropylene, modified polyether, etc.

3.Silicone defoamers with polysiloxane as the main raw material include: pure silicone oil, silicone oil solution, silicone paste, silicone oil emulsion, powder, and block.

4.Silicone defoamer: the basic ingredient is silicone oil.

5.Non-silicone defoamer: there are many kinds, such as vegetable oil, phosphate ester and so on.

Defoamers are also divided into many types of shapes, and defoamers can be divided into solutions, emulsions, powders, pastes, and lumps. Defoamers are divided into the following according to their uses:

Food, Pharmaceutical, Fermentation; papermaking, printing and dyeing auxiliaries; oil extraction, storage and transportation, refining, lubricating oil; chemical production; Metal cutting fluids, chemical cleaning, water treatment, and more. According to the focus of the performance, defoamers can be divided into: defoamers, antifoam agents and deaerators.

The picture shows the paint defoamer).

Well, that's all for today's sharing, this reader, after reading this sharing, you probably understand the composition of the defoamer, not every defoamer is the same raw material, different industries have different industries of defoamers, symptomatic defoaming is the key. If you don't understand, please submit and ask, and we will answer for you all the time.

Function: After addition, it can quickly dissolve into the foam, reduce the surface tension of the foam, destroy the elasticity of the liquid film, and achieve the purpose of rapid defoaming and long-term foam inhibition; Good water solubility, fast dispersion, can quickly dissolve with water-based coatings, no oil bleaching, no precipitation; Adding to water-based paints will not affect the performance and quality of the paint, and will not change its appearance and color.

The following points need to be paid attention to in the selection of paint defoamer:

1.Chemical composition of the defoamer: The chemical composition of the defoamer needs to be compatible with the coating system to avoid adverse reactions. Generally speaking, the chemical composition of coating defoamers includes silicones, polyethers, etc., which need to be selected according to the characteristics of the coating system.

2.Performance of defoamer: The performance of paint defoamer needs to meet the requirements of coating production and use, such as stability, dispersion, high temperature resistance, etc., which needs to be evaluated and selected according to the actual situation.

3.Example of the amount and proportion of defoamer used: The amount and proportion of defoamer need to be adjusted according to the actual situation to avoid excessive use and waste. In general, the amount of defoamer used is adjusted according to the actual situation.

4.Stability of defoamer: Coating defoamer has good stability, but it needs to avoid moisture, heat and contamination during storage and use, so as not to affect the defoaming effect and stability to make qualitative.

5.Safety precautions: When using paint defoamers, you need to pay attention to safety, avoid contact with ** and eyes, if accidentally touched, you should wash it in time and seek medical attention.

It should be noted that the above matters are for reference only, and the specific use of paint defoamer needs to be evaluated and selected according to the actual situation, and at the same time, it needs to be used in accordance with the guidance on the instructions to avoid harm to the human body and the environment.

Oil-based defoamers are typically made up of the following ingredients:

1.Oil-based base substances: Oil-based defoamer stalls typically contain one or more oil-based base substances, such as mineral oils, synthetic oils, or vegetable oils.

These oily substances have a high surface tension and viscosity and can form a thin film on the surface of the liquid, preventing the formation and diffusion of air bubbles.

2.Surfactants: Defoamers often contain surfactants that are used to reduce the tension on the surface of the liquid, making it easier for bubbles to burst and dissipate.

Surfactants form a thin film on the surface of the liquid, which improves the wetting and flow of the liquid, thereby reducing the formation of air bubbles.

3.Dispersants: Dispersants can help evenly disperse the ingredients in a defoamer in a liquid to ensure their effectiveness and stability.

4.Antioxidants: To improve the stability and durability of defoamers, antioxidants are often added to prevent the defoamer from being affected by oxidation during storage and use.

It is important to note that different brands and types of oil-based defoamers may have different formulations and ingredient combinations. Specific ingredients and formulations may vary depending on the type of product, use, and manufacturer. Therefore, when selecting and using an oil-based defoamer, it is best to read the product leaflet carefully and follow the manufacturer's recommendations and guidance before using it.

An oil-based defoamer is a surfactant used to inhibit the production of bubbles and foam in liquids, and is mainly composed of the following components:

1.Oily matrix: As the main ingredient, mineral oil, synthetic lubricating oil or other natural oils and fats are usually used, which have good moisturizing and anti-rust and anti-corrosion effects.

2.Surfactant: This is an indispensable ingredient in oil-based defoamers, which can break the surface tension between liquid molecules, making bubbles difficult to form and stable in liquids.

3.Solvents: Common solvents include alcohols, ketones, ethers, etc., which can help oil-based defoamers quickly disperse and diffuse into the liquid, making them more uniform.

4.Stabilizer: The oil-based defoamer is easily affected by factors such as temperature, pressure and stirring during use, so some stabilizers need to be added to ensure the stability and durability of the effect.

It should be noted that a small sample test is required before the use of oil-based defoamers to determine the best addition amount and use method to avoid excessive or uneven use. In addition, during storage and use, the World Lead Bank should also pay attention to keeping it dry, moisture-proof and avoiding the influence of heat and other factors to ensure its use effect and safety.

An oil-based defoamer is a chemical used to eliminate air bubbles in oily systems. Oil-based defoamers are generally more durable than water-based defoamers and are effective at eliminating air bubbles at high temperatures and pressures. Common oil-based defoamers include mineral oils, vegetable oils, and animal oils.

Oil-based defoamers usually eliminate aerobubbles by forming a layer of Sohuai separating film on the surface of the bubbles. This barrier prevents air bubbles from spreading in the water, effectively eliminating them. Compared with water-based defoamers, oil-based defoamers have the advantage of being stable at higher temperatures and pressures, and can effectively eliminate bubbles at high temperatures and pressures.

It is important to note that it is safe to use oil-based defoamers and avoid inhalation or contact with ** and eyes. At the same time, it is necessary to pay attention to the method of use and dosage when using it to avoid unnecessary waste and adverse effects.

Oil-based defoamer is a common surfactant, usually an organic compound containing polar and non-polar groups, which has the property of reducing surface tension at the oil-water interface and inhibiting the formation of bubbles and foam. Different from water-based defoamers, oil-based defoamers are mainly used in oil-soluble or oil-based systems, such as petrochemicals, paints, lubricating oils, metalworking fluids and other fields.

Oil-based defoamers are generally anti-foaming and can be divided into two categories:

1.Oil-soluble defoamers: These defoamers themselves are oil-soluble organic molecules that can be added directly to oil-based systems. Oil-soluble defoamers usually have good high temperature resistance, acid and alkali resistance, salt resistance and other properties, and are widely used in the petrochemical industry.

2.Water-in-oil defoamer: This type of defoamer is a macro-chaotic particle coated with water in the oil to form an emulsion-like liquid that converts the water-soluble defoamer into an oil-soluble defoamer.

Water-in-oil defoamers typically have the characteristics of adhesion, dispersion and stability, and are suitable for some low-viscosity liquid systems.

In short, oil-based defoamer is a kind of surfactant used to inhibit the formation of bubbles and foam in oil-based systems, and has good characteristics such as high temperature resistance, acid and alkali resistance, and salt resistance. In practical applications, suitable oil-based defoamers should be selected according to different use conditions and needs, and added according to the correct use method.

Causes of foam during mining:

1.When the drilling mud overflows natural gas in the formation, the mud produces foam, and the foam does not have time to burst and circulates into the well.

2.The excessive type and amount of surfactant is the main reason for the stable existence of foam.

3.When the treatment agent is subjected to high temperatures, it will decompose or ferment the gas generated, and accumulate to form foam.

Hazards of foaming:

1.Excessive foam causes air bubbles to compress, which seriously affects the efficiency of the pump.

2.**Medium foam is relatively stable, and it is often too late to separate or maintain the separation effect, and the separator production capacity needs to be reduced.

3.When loading ships and tankers, the foam affects the measurement and affects the efficiency of loading.

4.In the coke column, when the foaming increases to a certain value, the production process is slowed down.

Features of oilfield defoamers:

1.It can effectively solve the foam generated by drilling and avoid the adverse effects caused by production.

2.Good dispersion, low dosage, fast defoaming speed.

3.It can effectively improve the lubrication performance and cooling effect of the mud, and greatly improve the efficiency of mud circulation.

4.It avoids the increase in silicon content after use and does not adversely affect the downstream processing process.

5.It is suitable for maintaining high defoaming properties at high temperatures, acids, alkalis or shear forces, and can be used in a wide range of temperatures.

How to use with storage:

The amount of oilfield defoamer should be 1% of the total volume, but the correct amount should be determined after the process test, and it can also be used after mixing with other powdered additives. The defoamer should be stored in a cool, wind-sheltered place. The storage period is one year, and there is no obvious stratification.