Silicone Defoamer & Silicone antifoam

The MQ resin has a three-dimensional structure and will be cross-linked with the main body of the defoamer to form a network to avoid the breakage of the main active substances composed of disiloxane and silica , Thereby improving the acid and heat resistance of the defoaming agent, and increasing the defoaming time

Working Principle of Silicone Defoamer

The active ingredient of silicone defoamer is silicon paste. Hydrophobic silica particles in silicone paste to form a defoaming agent dispersion in silicone oil to help silicone oil enter into the surface of foam film, reduce insertion resistance of silicone oil drops and foam drainage time. Also, it can increase the depth of foam dispersant inserted on the surface of foam film to improve the ability to destroy the oil-water-air film and accelerate the defoaming speed.


The SI-OH bond of methyl MQ silicone resin with heating conditions can react with the residual Si-OH in dimethyl silicone oil and hydrophobic fumed silica to form an organic polymer with a complex polymer chain structure. This polymer can effectively improve the dispersibility of silica, and further enhance the synergistic defoaming and antifoaming performance of silica and dimethyl silicone oil.


Emulsion type organosilicon defoamer uses two methyl silicone oil as the main raw materials, which is a defoamer emulsifier by adding methyl MQ silicone resin and hydrophobic carbon black. It can be widely used in various industries: food, paper, leather, coatings, environmental management and other aspects of chemical production.

Benefit from the following manufacturing advantages

1. Pre-production samples for all orders before production starts

2. Free packaging services

3. Precision manufacturing on branded CNC equipment

4. Experienced engineers to monitor the entire production process

5. Stable after-sales service

6. 24-hour warehousing service and logistics support

7. Wholesale and retail experience

8. Quality control, including raw material incoming inspection, process intermediate product inspection, finished product factory full analysis inspection

9. Invest more than 12% of sales in R&D each year


Silicone-based defoamers are widely used in many industrial applications to make chemical processing be improved foam control.

1. Food processing

Silicone antifoam or silicone defoamer are widely used in direct or indirect food contact applications throughout all stages of the industrial processes. From large factories and restaurants to home cooking, food packaging and labels, traces of silicone can be found everywhere. Silicone has the advantages of being easy to use, safe operation, no odor, and no impact on food characteristics, making it unparalleled in satisfying the various needs of food processing. They are used in a variety of food and beverage applications to anti-foaming or eliminate existing foam during production.


Foaming issues in food and beverage processing applications can negatively impact efficiency, productivity and cost. Silicone antifoam or defoamers as processing aids are designed to safely and effectively reduce foam problems in a variety of conditions encountered in food and beverage processing. Whether added purely as a liquid or powder or mixed into other compounds or emulsions, silicone antifoams are more effective than organic ones.


1. Food processing: It can effectively defoaming in food processing, and is generally used in the processing of water-soluble food, with stable performance and good defoaming effect.


2. Sugar industry: After the honey is fermented, calcium carbonate needs to be added for neutralization. Foam will be generated during the neutralization process, and a defoamer is needed for defoaming.


3. Fermentation industry: Grape juice will produce gas and foam during the fermentation process, which affects normal fermentation. The defoamer can effectively defoam and ensure the production quality of the wine.

2. Textile and Leather

As a direct user textile printing and dyeing factory, we attach importance to the performance of defoamer, confirm the product quality through trial on the machine, and require defoamer: viscosity should not be too high, easy to use, easy to control addition, economical cost, rapid defoaming and long-lasting inhibition of foam. good dispersion, no oil bleaching, no silicon spots, safe and non-toxic, in line with the requirements of environmental protection.


Printing and dyeing auxiliaries companies, a variety of self-produced auxiliaries products, focus on matching, require defoamers: products thick, easy to dilute and compound, products have a long shelf life, products have a high performance-to-price ratio, solve the compounding with auxiliaries, provide technical support.


Traders of dyeing and chemical materials, most of whom have mature users, require defoamers: products with a high performance-to-price ratio, stable product quality, and provide technical support.


The practice has proved that defoamers for textile printing and dyeing should have: rapid defoaming and long-lasting foam inhibition, high-cost performance; good dispersibility, high-temperature resistance, acid and alkali resistance, electrolyte resistance, shear resistance, good compatibility with various dyeing chemicals, no oil bleaching, no silicon spots; safety, non-toxic, in line with environmental requirements; stable quality, suitable viscosity, and concentration, easy to use and dilute; provide timely and effective technical support.

3. Pulp and paper

As a new type of defoaming aid,  active silicone defoamer has been widely valued in the paper industry. Its defoaming principle is that when a very low surface tension defoamer enters the directional bubble film, it destroys the directional bubble film. The mechanical balance can be achieved to achieve foam breaking and foam control.


According to physical properties, silicone antifoam agent can be divided into four categories: silicone oil type; silicone oil solution type; silicone oil mixture type; silicone oil emulsion type. In the paper industry, the commonly used silicone oil type defoamer can be either silicone oil type or silicone oil emulsion type. At present, it is mainly silicone oil emulsion type. When silicone oil is emulsified, it is added to the foaming system. It can quickly reduce the surface tension, so it is easy to be adsorbed on the surface of the foam liquid, and the surface film formed by spreading quickly on the liquid surface, because of its low viscosity and low strength, can cause local surface tension imbalance on the foam, thus The liquid film is thinned to rupture to achieve the purpose of defoaming. For emulsion type defoamer, because of its large hydrophilicity, it can adapt to a wide range of pH values, has no adverse effect on sizing, will not produce stains on the paper surface, and can achieve strong foam breaking with low dosage. and anti-foaming effect.


In the silicone oils mixture type, XJY-8205 MQ silicone resin is mixed with a silica-silicone oil system. MQ resin can improve the applicability of this type of defoamer under high-temperature conditions and ensure the performance of the defoamer in a wider temperature range. It will not weaken, and temperature changes in papermaking, such as high temperature, are also common, so the use of XJY-8205MQ silicone resin is largely effective and can meet your demanding applications.

Product Question

What is the MOQ?

For our existing regular in-stock products, the MOQ starts from 1 piece.

If you would like to customize a product with a specific specification, please contact us to determine the MOQ.

Do you offer a delivery service?

Of course, we are happy to provide our customers with a substitute shipping service.

We also offer a courier service with different prices and delivery times depending on your needs.

Your order will be delivered quickly and safely. Our professional team will also help with any urgent.

What is the sample fee?

Samples up to 1KG are free of charge, and shipping costs are paid on delivery.

For a large amount of sample cost, please contact us to discuss.

What’s the packaging?

Resin powder is usually packed in 25KG cardboard drums.

The liquid is packed in 200KG iron drums.

If you have special requirements, we can negotiate for customization.

What is the lead time for production?

For our existing regular stock products, we usually need 7-15 days, the lead time may be longer for higher quantities, depending on the actual delivery date of the factory.

For custom products, please contact us to determine the exact lead time.

Do you provide warehousing services for my product orders?

We offer a professional 24-hour monitored warehousing service for every customer.

What are your payment terms?

For samples, 100% T/T in advance.

For orders: 50% TT in advance, 50% balance before shipment

For large long-term orders, please contact us to discuss payment terms.

How long does MQ resin last?

We use high-standard raw materials to produce silicone pressure-sensitive adhesive, the product is valid for 12 months from the production date under the original unopened package, and the storage temperature is 25℃ and below. If the storage period is exceeded, the product should be retested and can still be used if it meets the quality requirements.