Defoamer introduction - defoamer, also known as anti foaming agent, defoaming agent, form liquid and solid powder, in the process of industrial production will produce many harmful foam, need to add defoamer. Commonly used defoamer is widely used in metal processing fluids, scavenging latex, textile sizing, food fermentation, biological medicine, coatings, petrochemical industry, paper making, industrial cleaning, sewage treatment and other industries in the production of harmful foam.


Common defoamers


1. Alkali-resistant defoamer


Under the condition of high temperature and strong alkali, it can quickly defoam and sustainably restrain foam. It has good stability, low dosage, high efficiency and no bleaching oil. It is widely used in paper cooking black liquor treatment, strong alkaline refining agent in textile printing and dyeing industry, detergent under strong alkaline condition and defoaming in other high temperature alkaline aqueous system.


2. Anti-acid defoamer


Composed of fatty acid esters and fatty amides, it is widely used in wet-process phosphoric acid, titanium dioxide production, boric acid production and other strong acid systems.


3. High viscosity foam defoamer.


It is a highly effective compound defoamer developed for the black liquor of paper making, chemical separation and special chemical reaction. It has the characteristics of high viscosity, fine foam and difficult elimination.


4. Coatings defoamer


It contains a variety of high quality defoaming components, and therefore has wide application. It is especially suitable for removing foam from styrene acrylic latex, ethylene propylene rubber, pure acrylic latex, vinyl acetate latex and so on.


5. Paper defoamer


It can effectively control the overflow of pulp and foam and improve the quality of paper. It is widely used in defoaming of papermaking system, wastewater treatment, antifreeze and distillation system.


6. Cement mortar defoamer


It can effectively control the foam in cement mortar system and make the concrete component more dense and bright.


7. Defoamer for Oilfield


It can effectively control the production of foam in the process of oilfield production and improve the efficiency of oil production.


8. Defoamer for Cleaning


It can control the foaming agent effectively.


9. Cationic defoamer


It can effectively control foam production with cationic system, widely used in cationic papermaking and cationic cleaning agent for papermaking, and also can be used for papermaking sewage treatment, antifreeze and distillation system defoaming.


10. High Efficiency Fermentation Defoamer


It overcomes the shortcomings of ordinary silicone defoamer, such as poor heat resistance and short foaming time. The foam that rises and accumulates in the fermentor can be eliminated as quickly as polyether, and the product has the advantage that time can not be controlled by polyether.


11. Water treatment defoamer


Silicone defoamer is an ideal defoamer for water-borne foaming system because of its strong defoaming, anti-foaming function, small dosage and low cost.


12. High temperature defoamer


High temperature and strong acid and alkali resistance, high shear and wide range of PH value (2-14), high temperature (300 C) conditions have stability, can be used for water and oil system defoaming, the higher the temperature, the higher the efficiency, the better the effect. It can be used for defoaming and anti-foaming of high temperature strong acid-base media under extreme conditions such as bottle washing additives and oil field drilling.


13. Bottle Washing Additive Defoamer


High temperature and strong alkali resistance. It can adapt to the high temperature and strong alkali conditions of bottle washing additives.


There are many kinds of defoamers. The above summarizes some commonly used defoamers. When choosing defoamers, we should select appropriate defoamers according to industry and demand, so as to play a better role.


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