Which is the best defoamer for metalworking, what are the types of defoamers for metalworking fluids

Where are you? Detian's defoamer here in Guangdong is relatively good!

The use of defoamers in metalworking fluids is not only dependent on their good defoaming properties, but also on other properties, such as good compatibility or their effect on paintability. Therefore, it is necessary to carefully select the raw materials for the production of defoamers. A wide range of defoamers for metalworking fluids, and different defoaming mechanisms and laboratory tests will be discussed.

Principle of foam: Generally speaking, if you want to stabilize the foam with different gas content parameters and different foam types, you must add surfactant to the liquid (assuming that the liquid is water) to reduce its surface tension. The hydrophilic part of the surfactant stays in the water, and the hydrophobic part stays in the air, so that it has the premise of stabilizing the foam, and the molecules of the surfactant are arranged at the interface of the liquid air, and the structure of the foam liquid is called the foam thin layer defoaming principle The surface tension test of different metalworking fluids shows that the organic defoamer basically does not reduce the surface tension of the metalworking fluid.

However, silica defoamers, which have the largest reduction in surface tension, are not the most effective defoamers, i.e., surface tension can only be an approximate parameter to characterize the efficiency of a defoamer. Other components of the defoamer and its formulation can significantly affect its defoaming effect. Therefore, defoamers based on organically modified siloxanes show the best defoaming effect and good compatibility in metalworking fluids.

Metalworking fluid defoamers mainly include silicone defoamers, polysiloxane defoamers, polyether defoamers, polyvinyl alcohol defoamers, etc. They are mainly used in metalworking fluids, which can effectively inhibit the formation of bubbles and foam on the surface of the liquid, and at the same time can improve the stability and durability of metalworking fluids, thereby improving production efficiency and product quality.

Here are a few types of metalworking fluid defoamers:

Silicone defoamer: Because of its high efficiency, low toxicity and low volatility, it is widely used in metalworking fluids. Silicone defoamers form a stable lipid layer on the surface of the liquid, effectively inhibiting the formation of bubbles and foam.

Polysiloxane defoamer: This defoamer has good high temperature resistance, chemical stability and biodegradability. Polysiloxane defoamers can reduce the tension on the surface of the liquid, so that the gas is not easy to form bubbles and foams in the liquid.

Polyether defoamers: Polyether defoamers are commonly used at higher temperatures in metalworking fluids and can effectively inhibit foam formation without negatively impacting processing efficiency and product quality.

Polyvinyl alcohol defoamer: This defoamer is commonly used in metalworking fluids and detergents, with good dispersion and stability, which can effectively reduce the tension on the surface of the liquid, thereby inhibiting the formation of bubbles and foam.

The types of Longtai defoamers for metalworking fluids include: Longtai polyether defoamer, silicon polyether defoamer, fluorine-containing defoamer.

There are many types of industrial defoamers, which can be divided into the following categories according to their chemical composition and application areas:

1.Silicone oil defoamer: Silicone oil defoamer is a common defoamer, mainly composed of organosilicon compounds such as polydimethylsiloxane and polymethylsiloxane.

Silicone oil defoamer has good defoaming effect and high temperature resistance, and is widely used in chemical, pharmaceutical, food and other fields.

2.Polyether defoamer: Polyether defoamer is mainly composed of polymers such as polyoxyethylene and polyoxypropylene, which have good water solubility and dispersibility, and are often used in textile, papermaking, printing and other fields.

3.Polymer defoamer: Polymer defoamer is mainly composed of polymer compounds such as polyvinyl alcohol and polyamide, which has good dispersion and stability, and is often used in coatings, paints, glues and other fields.

4.Mineral oil defoamer: Mineral oil defoamer is mainly composed of mineral oil such as white oil and paraffin, which has good high temperature resistance and lubricating performance, and is often used in lubricating oil, hydraulic oil and other fields.

5.Natural plant defoamer: Natural plant defoamer is mainly composed of natural substances such as vegetable oil and plant loose friend chain wax, which has good biodegradability and environmental protection performance, and is often used in food, cosmetics and other fields.

It should be noted that different types of defoamers have different chemical compositions and application characteristics, and it is necessary to select the appropriate defoamer according to the actual application. At the same time, when using defoamers, it is necessary to pay attention to the dosage guidance on the instructions to avoid overuse and waste.

The metalworking fluid defoamer is made of raw materials containing special modified silicon and polyether through a special process, which is easily soluble in water, and is especially suitable for continuous defoaming and foam inhibition under the conditions of high temperature, strong acid and alkali, high shear force and high pressure.

Metalworking fluid defoamer has a wide range of applications, which are used in metal cutting fluids, metal processing, high water content hydraulic fluids, glycol hydraulic fluids, solvent cleaning, acid and alkali aqueous cleaning agents, coolants, grinding (oil) fluids, wire cutting fluids, automatic assembly line cleaning machines, large cleaning machines, lubricating (oil) fluids, saponified oils, EDM working fluids, drilling fluids, fine grinding fluids, etching fluids, electrolyte wire cutting fluids, alkali extraction process defoaming, dehydrating agents and other occasions.

Look at the kind of cutting fluid defoamer you are referring to, like metal cutting fluid defoamer, which is mainly composed of special modified polyether and fluorine-containing raw materials through a special process, soluble in water, more suitable for continuous defoaming and foam inhibition under the conditions of high temperature, strong acid and alkali, high shear force and high pressure. It can be widely used for foam removal and inhibition in a wide range of harsh systems over a wide temperature range.

Defoamers include active ingredients such as silicone oils, polyethers, higher alcohols, mineral oils, vegetable oils, etc. It reduces the tension on the surface of the liquid, thus eliminating foam.

The main ingredient of metalworking fluid Longtai defoamer is polyether, which is used in the metalworking fluid stock solution and added to the groove edge of the machining site, and can also be applied to industrial cleaning degreaser.

There are many different types of industrial defoamers, and the best choice depends on the specific application and needs. Here are the pros and cons of different types of defoamers for your reference:

Silicone defoamers: Silicone defoamers are one of the most commonly used defoamers, with excellent defoaming properties and antifoaming ability. The advantage is that it is highly adaptable to water quality, has good compatibility with various materials, and can be used in a wide range of water quality and production process conditions.

However, due to the high quality of silicone defoamer, it has a certain impact on the cost control of paper mills.

Phosphate defoamer: Phosphate defoamer is a defoamer with phosphate as the main component, which has good defoaming effect and anti-foaming ability, and is suitable for many industries, such as papermaking, coatings, detergents, etc. The advantage of phosphoric acid slag salt defoamer is that it has good adaptability to water quality and can be used under a wide range of water conditions.

However, phosphate defoamers may have a certain impact on the quality of the paper, so care needs to be taken when using them.

Amino acid defoamer: Amino acid defoamer is a dissipative reed foaming agent with amino acids as the main component, which has excellent defoaming performance and anti-foaming ability, and is suitable for papermaking, coatings, detergents and other industries. The advantage of amino acid defoamer is that it has good adaptability to water quality, can be used under a wide range of water conditions in the flushing zone, and also has good stability and compatibility.

It should be noted that different types of defoamers are suitable for different production processes and occasions, so paper mills need to choose the right defoamer according to their own needs and actual conditions. At the same time, it is necessary to pay attention to the dosage and mode of use when using to ensure the performance and safety of the defoamer.

Chemical: Contact your local chemical dealer and ask if they offer industrial metal cleaning defoamers. They usually have a variety of chemicals and cleaners**.

Industrial Supplies Vendors: Contact the Distributors or Equipment Vendors and ask if they offer industrial sliding and wild metal cleaning defoamers. These vendors typically offer products related to industrial cleaning.

When purchasing an industrial metal cleaning defoamer, make sure to choose a product that meets your needs and follow the instructions for use and safe operation guidelines. If you have specific cleaning requirements or need professional advice, it is recommended to consult a professional or engineer in the relevant field.

The dosage of defoamer for metalworking fluids needs to be evaluated and selected according to the situation of Shibi Xunji, and in general, the dosage of defoamer is used, and the specific amount of defoamer needs to be adjusted according to the actual situation. Here are some of the factors that affect the amount of defoamer used:

1.Types of processing fluids: Different types of processing fluids have a certain impact on the amount of defoamers, and generally speaking, high-concentration, high-viscosity, and high-temperature processing fluids need to use more defoamers.

2.Properties of the process fluid: The properties of the process fluid can also affect the amount of defoamer used, such as the grease content, surface tension, viscosity, etc. in the process fluid.

3.Conditions of use of process fluid: The conditions of use of process fluid will also affect the amount of defoamer used, such as the circulation rate of the process fluid, the degree of oxidation, the gas content, etc.

It should be noted that the amount and proportion of defoamer need to be appropriate to avoid excessive use and waste, and at the same time, it needs to be used in accordance with the instructions on the instructions to avoid harm to the human body and the environment.

The amount of metalworking fluid defoamer is 1 to 3 parts per thousand.