How do I use a defoamer? What is the appropriate dosage?

The defoamer is added directly to the foaming system to ensure that it is evenly dispersed. If diluted, do not store the dilution for more than 8 hours. For the system with a high foaming temperature (>60), it is recommended to add it to the system before 60 and disperse evenly to exert its maximum effectiveness.

According to the viscosity, temperature and stirring of different foaming systems, the more economical dosage is selected in units of 10ppm, and generally speaking, the dosage of 30-200ppm can ensure the ideal defoaming effect.

When using the defoamer, it needs to be thoroughly stirred, first diluted reasonably, and then stirred until it is homogeneous. After the on-demand ratio is completed, it needs to be used up in a short period of time. It is also necessary to protect the defoamer from frost and high temperatures, as the defoamer can affect performance under frost and high temperature conditions.

The correct use of the defoamer can make the defoamer more effective. So how do you use defoamers correctly?

1. First small test, then medium test.

Determine the best product to use and the best dosage;

2. Stir well.

Before using the defoamer, the emulsion should be reasonably diluted, and then stirred thoroughly until it is homogeneous;

3. Run out in a short period of time.

In order to ensure the concentration and defoaming effect of the defoamer, the defoamer needs to be used up in a short time;

4. Protect against frost and high temperatures.

Defoamers can affect their performance under frost and high temperatures;

5 Prohibitions**.

Strong ** will destroy the stability of the defoamer;

6. The viscosity is suitable.

Maintaining the right viscosity is the key to getting the most out of the defoamer.

There is no fixed way to use this, such as adding before the foam is generated to reduce the foam in the foam production process, which mainly has the effect of foam suppression. In the foam generation link, the addition can achieve the effect of direct defoaming, depending on the specific process flow, the production of foam and its own requirements to add.

The amount of defoamer needs to be adjusted according to various factors such as the specific liquid, foam amount, and ambient temperature. Here are some basic principles for defoamer dosage:

1.Do not overuse the defoamer: Excessive use can reduce the effectiveness of the defoamer and may have an impact on the quality of the liquid.

2.Mix thoroughly: The defoamer should be well mixed into the liquid to ensure it is fully effective.

3.Batch addition: The defoamer can be added to the liquid in batches, and it should be fully stirred after each addition, so as to gradually grasp the amount of defoamer and foam status.

4.Adjust the dosage: If there is still a lot of foam after using the defoamer, you need to gradually increase the dosage of the defoamer until the desired effect is achieved; Conversely, if the amount of foam is insufficient after use, it is necessary to gradually reduce the amount of defoamer.

In short, when using defoamers, it is necessary to fully consider various factors and use them appropriately according to the actual situation to achieve the best defoaming effect. At the same time, the dosage and effect of each use should be recorded for later adjustment and mastery.

The amount of defoamer used will vary depending on the application and the specific situation. Determination of usage usually requires consideration of the following factors:

1.Liquid properties: Different liquids have different foam production tendencies and stability. Factors such as viscosity, surface tension, pH, etc., all affect the formation and stabilization time of foam. Based on the evaluation of the properties of the liquid, the required amount of defoamer can be determined.

2.Application requirements: Different application scenarios and needs have different requirements for the effect and dosage of defoamers.

For example, some applications require complete elimination of source band foam, while others only require partial foam suppression. Depending on the specific application needs, the amount of defoamer to be used can be determined.

4.Types and concentrations of defoamers: Different types of defoamers have different activities and effects, so the amount used will also vary. In addition, the concentration of the defoamer will also have an effect on the amount used.

Based on the combination of the above factors, the appropriate amount of defoamer can be determined. In general, the correct amount of defoamer to use should be well-tried and proven to ensure optimal defoaming results without compromising process or product quality.

The amount of defoamer used depends on the specific application and needs, and in general, it can be added in the following ways:

Add according to the proportion: In general, it can be added in proportion to the concentration of the defoamer. For example, if a liquid defoamer is used, it can be added to the reactor in a ratio of 1:10 to 1:20 and then stirred.

Add by volume: If the concentration of the defoamer is high, it can be added in proportion to the volume. For example, if the defoamer used is in powder form, it can be added to the reactor and then added in a volume ratio of 1:1 to 1:2.

Add by weight: If the concentration of the defoamer is low, it can be added in proportion to the weight. For example, if the defoamer used is liquid, it can be added to the reactor and then followed by 1:

10 to 1:20 weight ratio.

It should be noted that the amount of defoamer should be determined according to the actual application scenarios and needs, if the amount added is too large, it may affect the reaction effect, if the amount added is too small, it may not be able to fill the imitation search and defoam. When adding a defoamer, it should be stirred well to ensure that it is fully dispersed and works evenly. At the same time, when adding defoamers, it is also necessary to pay attention to their safety and compatibility to ensure that they do not negatively affect equipment and materials.

1. Alcohol defoamer: When alcohol defoamer is used, the dosage is generally within the limit. Talk about it.

2. Oil-based defoamer: the addition amount of oil-based late-staring defoaming agent is between the amount of fatty acid ester defoamer.

3. Amide defoamer: The effect of amide defoamer is relatively good, and the addition amount is generally within the limit.

4. Phosphoric acid defoamer: Phosphoric acid defoamer is most commonly used in fibers and lubricating oils, and the addition amount is between.

5. Amine defoamer: Amine defoamer is mainly used in fiber processing, and the addition amount is.

6. Ether defoamer: Ether defoamer is used more in papermaking printing and dyeing, cleaning, and the addition amount is general.

The amount of water treatment defoamer used depends on a variety of factors, such as:

The amount of water treated.

The time required for processing.

The type and size of the device used for processing.

the concentration and type of defoamer-based purifier, etc.

In general, it is recommended to follow the instructions and recommended dosage provided by the defoamer manufacturer. In addition, the following points should be noted:

Do not overuse the defoamer, as this may affect the quality of the water and the subsequent treatment.

The amount of defoamer can be gradually increased or decreased as needed to achieve the best results.

When adding defoamer, it should be poured slowly and mixed with water to avoid excessive local concentration.

In conclusion, the correct use of defoamers can improve the treatment effect and quality of water, but it needs to be used with caution on a case-by-case basis.

Defoamers are commonly used chemicals and are widely used in many industrial sectors. When using defoamers, you need to pay attention to the following:

1.The amount of addition should be appropriate.

If the amount of defoamer is added too little, the expected defoaming effect may not be achieved; Adding too much may have an impact on the production process, such as reducing product quality and affecting downstream processing. Therefore, when adding defoamers, it is necessary to know the appropriate dosage according to the specific situation.

2.Determine the best time to add.

The timing of the addition of the defoamer is also critical. If added too early, the defoamer may be diluted or decomposed, affecting its defoaming effect; If you add it too late, it will be difficult to achieve the desired defoaming effect. Therefore, when using defoamers, it is necessary to determine the optimal addition time according to the process requirements.

3.Pay attention to the stability of the defoamer.

Care needs to be taken to maintain the stability of defoamers during storage and use. Some defoamers are easy to decompose or fail due to environmental rot conditions, which requires protective measures during storage and use to ensure the effectiveness of the defoamer.

4.Avoid mixing with other chemicals.

When using defoamers, they need to be avoided from mixing with other chemicals. Some chemicals may react with each other to affect the defoamer's defoaming effect.

In conclusion, when using defoamers, it is necessary to comply with the relevant regulations and operating guidelines, and pay attention to safe use to ensure their effectiveness and maximize their defoaming effect.

The amount of industrial defoamer used depends on a variety of factors, such as the type of defoamer, its use, foam characteristics, production process and production equipment. In general, here are some common defoamer dosage ranges:

Water-based defoamers: The amount of water-based defoamers used is usually , and the specific amount used needs to be adjusted according to the specific situation.

Oil-based defoamers: The amount of oil-based defoamers used is usually , and the specific amount used needs to be adjusted on a case-by-case basis.

Ultrasonic brightening and high-foaming agent: The amount of ultrasonic antifoam is usually , and the specific amount of use needs to be adjusted according to the specific bending situation.

It is important to note that different defoamers have different methods of use and dosages, so they need to be used and adjusted on a case-by-case basis. At the same time, excessive use of defoamers may affect product quality and production processes, so they need to be used with caution.

What is a defoamer? A key feature of all defoamers is that they are incompatible with foaming fluids. An overly compatible defoamer does not expand sufficiently into the foam film layer, it is present throughout the coating film; The defoaming effect is either very low or non-existent.

Excessive incompatibilities can in turn lead to problematic foam, such as cloudiness or cratering. Therefore, choosing the right defoamer is a "balancing act" between compatibility and incompatibility.

In view of this, the choice of defoamer depends on the time of addition, the duration and the method of incorporation (shear force and dosage in the coating formulation. All of these parameters affect the distribution and therefore the droplet size. Defoamers in coating formulations.

They affect its effectiveness. If the dispersion process is inefficient and results in excessive droplet formation, surface defects can occur in the coating. If the dispersion is too large, the defoamer droplets are too small and their behavior is too "compatible" in the coating formulation, reducing the effectiveness.

For defoamers with particularly high activity that exist as concentrates, defoamer droplets need to be generated in situ. This can be caused by, for example, the delicate distribution of defoamers in paint formulations in the abrasives by means of high-shear dispersion equipment. In the case of defoamer emulsions, where the emulsion droplets are already finely distributed in water, the defoamer can be added to the coating formulation at the low shear forces typically used during paint mixing.

With so many different foaming fluid systems, there is no "one-size-fits-all" defoamer that fits all formulations. To ensure that the right product can be supplied for any purpose, a range of defoamers is required. The defoaming effect can be finely adjusted by varying the dosage.

In general, the more defoamer you use, the better the defoaming effect. However, this may also increase the defect or make it more apparent. Reducing the dose can prevent film problems, but in some cases, defoaming may be inadequate.

The term "defoaming" is often used to describe the removal of air bubbles from the foam. However, in some cases, a distinction should be made between "defoaming" and "air release". First, the bubbles need to reach the surface.

Removing foam bubbles from a surface is called defoaming. Defoamers are only effective at the surface to eliminate air bubbles on the surface. In contrast, air releasers work throughout the working system.

In summary, here's a list of important steps to take to choose the right defoamer for your system:

Compatibility: If possible, mix small amounts with resin. If the sample is too clear, the additive is soluble and compatible. It has to cause some cloudiness.

High shear stability: Check the TDS of the additive and how it is designed.

Defoaming or air release: Depends on the situation.

Syst Technology is a defoamer chemical manufacturer located in Quanzhou, Fujian Province, and our technical service application laboratory provides valuable solutions for our partners Do you have a technical question or a defoamer question for our chemists? Contact us today!

There is no problem in choosing products from regular manufacturers.