how to use defoamer correctly

Reasonable dilution of silicone defoamer

The silicone antifoam concentrate/emulsion must be pre-diluted with cold water (less than 30 ° C). Add cold water in the steps and stir thoroughly to avoid uneven distribution. If the hardness of the cold water is high, it will result in uneven dilution or agglomeration of the emulsion, both of which may cause the silicone to precipitate on the fabric or mechanical parts. A cellulose thickener thickener system is added to stabilize the diluted antifoam emulsion. If the diluted product is left for too long, it should also be added with a fungicide to prevent spoilage, especially in the hot season.

Avoid silicone formation on the fabric or deposit on the device

First, production trials and laboratory trials should be conducted to determine the minimum amount of defoamer needed to effectively inhibit foam. It is necessary to avoid excessive doses in order to achieve low cost and high performance.

Second, good process conditions such as temperature, pH, other raw materials and electrolyte concentrations, and shear forces should be ensured. The stability of the defoamer system should be tested in the laboratory under the above conditions before being put into production. Even after dilution, the defoamer cannot be added directly to the thermal processing.

Amber Zhang Ms.

Foreign trade 

Zhejiang Ruico Advanced Materials Co., Ltd. (Stock No.873233)

Add: No.188, Liangshan Road, Linghu Town, Nanxun District, Huzhou City, Zhejiang Province, China 313018

Phone: +86 (572) 2903236

Fax: +86 (572) 2905222

Wechat: 15534631339

Website: www.ruicoglobal.com 

Email: [email protected]