The problem of thinning use of defoamer, I believe that many practitioners related to defoamer have a little knowledge, the following defoamer master will share with you the correct thinning method.






What are the effects of adding water directly to dilute defoamer


1. Poor stability; Adding water to dilute the defoamer directly, the addition of water to dilute the ratio is inconsistent, will directly lead to the stability of the defoamer deteriorates, the defoamer/defoamer performance will also be affected; Even if the defoaming/defoaming performance is not affected, the stability of defoaming/defoaming will not be guaranteed.






2. Easy to layer; Adding water to dilute the defoamer breaks the viscosity system of the defoamer itself, so it will produce stratification, so that the appearance of the defoamer looks very unbalanced, and even white floating.






3. Foam suppression performance deteriorates; After adding water to the defoamer, the effective content will be significantly reduced, that is, the so-called solid content is seriously affected, then in the case of such a low solid content, the anti-foam performance will be greatly reduced.






Water can be added directly to open the situation


Can not directly add water to dilute defoamer? Of course, that's not all; If you are the end customer, on-site use, you can consider directly adding water to open thin, the only thing to note is that according to the production needs of the day, open thin defoamer is used up on the day. The storage of products that have not been used up will also be affected, and it should be deteriorated for a long time, which has a great impact.






The correct thinning method of defoamer






1. Thickening agent is recommended


It is not recommended to add water to dilute the defoamer directly, because adding water to dilute the original structure of the defoamer will destroy the stability of the defoamer, break the viscosity system of the defoamer itself, and if it is not well controlled, it will produce delamination, demulsification, precipitation and other conditions.






2. It is recommended to use a PH test paper to adjust the PH value


After the defoamer is diluted, we must pay attention to adjusting the PH value of the system, because the PH value will affect the PH value of the entire system and the later use effect, we recommend that you use PH test paper to detect the pH value, because the pH test paper measurement results will be more accurate. If the PH meter is used, it should be corrected regularly, and if it is not corrected for a long time, the measurement results will be inaccurate, and the measurement should be stirred evenly, the test results are not the same at different locations, and it will be affected by temperature.






3. Solid content should not be too low


Prescribing dilute defoamer at will is an extremely unprofessional and irresponsible lie; The solid content of defoamer can not be less than 5%, less than 5% will seriously affect the use of defoamer, the state lost due to stability.






4. Pay attention to adding preservatives


After the defoamer is diluted, a preservative should be added and can be placed for a long time.






Note: In the absence of thickening agent, emulsion defoamer can only be diluted with cold water, hot water dilution will break the emulsion, diluted defoamer due to the low concentration of surfactant, emulsion is extremely unstable, quickly delamination failure, the application period is only 2-4 hours, so the defoamer should be used immediately after opening. The amount and time of defoamer should be determined after testing to avoid wasting the amount.






To sum up, the defoamer is used in the process; Mastering the correct opening knowledge not only helps production but also saves costs.