How to dilute defoamer?

The method of dilute defoamer:

 Prepare alkali swelling thickener

 Preparation of thickened water:

Add alkali-saturated thickener into water, adjust the pH of the thickener aqueous solution to 6.8-7.2 by 10% NaoH solution (Generally speaking, the amount of NaOH solution can be added according to 40% of the weight of the thickener).

Note: that when the aqueous solution gradually changes from light milky white, the viscosity also increases. So note that NaOH solution must be added very slowly;

Finally add the fungicide, carcass (note that the cardin is an acidic substance, can’t directly contact the alkali, PH of the thickened water should be less than 7.5, otherwise the carcass wouldn’t work),

Bit bactericide: (the bactericide is an alkaline bactericide, can’t directly contact with the carcass). The amount of thickener is related to the final dilution ratio. Generally, the viscosity of the final product is 200~1000.

 Other dilution ratios and so on:

Note:

1. Under this method, the concentration of the thickener is 3%. If you feel the viscosity of the final product is low, increase the thickener concentration (eg increase to 3.5%, 4% or higher) and vice versa. However, it should not be less than 2%, and it should not be diluted directly with water. Otherwise, the diluted defoamer is unstable, and it is easy to stratify, demulsifie and float.
2. When mixing with stirring, the stirring speed should not be too fast. It is recommended that the rotation speed should not exceed 40 revolutions per minute. Generally, can take sample for 2 minutes stirring to observe whether there are obvious sticks and avoid stirring for a long time.

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]