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Characteristics and methods of use of silicone defoamers

Apr 01, 2019

    In industrial production, foam is everywhere: machine tanks of various types of processing fluids; various industrial cleaning tanks; various industrial and agricultural products and preparations; water treatment, water treatment, etc.

    Foam, brings various problems to industrial production: in order to prevent foam overflow, the feed coefficient is forced to reduce by 30% to 50%; foam overflow leads to waste of raw materials; foam takes up space, affects reaction speed, production cycle is forced to prolong; foam will affect Product quality, such as coatings, plastic products; the generation of foam, has an impact on the stability of industrial production, resulting in operational fluctuations, unstable quality.

    The most straightforward solution to the bubble problem is to use an antifoaming agent. Whether it is a silicone defoamer or other defoamer type, their role is to solve the foam problem.

Silicone defoamer characteristics

    The silicone defoamer is prepared by using a silicone oil as a basic component and a suitable solvent, emulsifier or inorganic filler through a special process. The silicone defoaming agent is an excellent antifoaming agent, and has strong defoaming power, and is particularly valuable because of its chemical stability, physiological inertness and high and low temperature properties, and thus it is widely used.

■ Defoaming, antifoaming, and low dosage;

■ Does not affect the basic properties of the foaming system;

■ Good heat resistance, chemical stability, harmless, non-combustible, non-explosive.

Technical parameters of common silicone defoamers:

Model: (manufacturer's own, no uniform number)

Appearance: (milk liquid)

pH value: (6.5 ~ 8.5)

Water solubility: (dissolved in water, excellent dispersion performance)

Note: The values listed in this data sheet only describe the typical properties of common silicone defoamer products and do not represent the scope of the specification.

Application of silicone defoamer:

1. Textile pulp, high temperature dyeing;

2. Industrial water treatment;

3. Defoaming of mud in oil exploitation;

4. Waterborne coatings and other aqueous foams.

5. Other industries that need anti-foaming time and fast defoaming.

Method for using silicone defoamer

    Silicone defoamer has excellent anti-foaming performance, can be added after the foam is produced or added as a foam-inhibiting component. According to different use systems, the defoaming agent can be added in an amount of 10~1000ppm. The customer decides according to the specific circumstances.

    Silicone defoamer products can be used directly or diluted. If it can be fully stirred and dispersed in the foaming system, it can be added directly without dilution. If dilution is required, follow the dilution method of the accessory. It is not advisable to dilute the product directly with water, and it is prone to delamination and demulsification, which affects product quality. Defoamer manufacturers are not responsible for the consequences of direct dilution with water or other incorrect methods of processing or using the product.


Contact:Sharon Song(Sales manager)

Zhejiang Runhe Organosilicone New Material Co.,Ltd(Factory)

Zhejiang Runhe Chemical New Material Co.,Ltd(Exporter)


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