Defoamers are mainly industrial grade and food grade. Due to factors such as production formula and technology, harmful foams are easily generated in industrial production, which not only affects the production schedule and reduces product quality, but may also bring other more serious negative effects. The common treatment method is to add a defoamer to defoam and suppress the foam.
(Picture: The hazards of industrial production foam)
What are the types of defoamers?
Defoamers can be divided into the following three categories:
1. Products based on natural products: animal and vegetable fats and oils, mineral oils and compounds, etc.
2. Polyether type: block copolymer of polyoxyethylene polyoxypropylene, modified polyether, etc.
3. Silicone defoamers with polysiloxane as the main raw material include: pure silicone oil, silicone oil solution, silicone paste, silicone oil emulsion, powder, and block.
(Picture: Main types of industrial defoamers)
Defoaming principle of antifoaming agent
The defoamer works at or after the formation of the thin foam layer:
1. The uniformly dispersed defoamer penetrates into the foam elastic film and is distributed in the film, and causes the thin layer to rupture through the reduction of surface tension.
2. The uniformly dispersed defoamer penetrates into the thin foam layer and forms a monomolecular film, which reduces its adhesion and is easy to break the thin layer.
3. The defoamer containing hydrophobic particles has a third mechanism. These hydrophobic particles reach the surface of the thin layer and adsorb the surfactant on the top of the thin layer. The thin layer was broken due to the lack of surfactant.
(Picture: Defoaming principle of defoamer)
Customized defoaming solutions-ideal results
Hazardous foam is encountered in the industrial production process, and it needs to be defoamed in time. For example, during the paint production process, it is easy to produce blistering, which is mainly related to the formula and process. In the paint production process, in order to ensure good product performance, additives such as emulsifiers, thickeners, film formers, dispersants, etc. are usually added, many of which are surfactants. These substances are It is easy to produce a lot of blistering, which not only affects operations such as production and canning, but also affects the effect of paint after construction.
In fact, in industrial production, foam is not only easy to produce in the paint production process, but other industries such as papermaking, textile printing and dyeing, circuit boards, water reducing agents, water-based adhesives, and industrial cleaning are also prone to foam problems. Adding defoamer is a very effective solution. However, the causes of foaming caused by different industries and production environments are different, and the performance requirements of defoamers are also different. It may be difficult to solve the general formula of defoamers. At this time, it is very necessary to choose a defoamer for the plan!
Nanhui defoamer manufacturer, with strong R&D strength, has an independent R&D laboratory and a professional defoamer R&D team, which can be targeted at the customer’s industry and foaming environment, and the samples sent are for compound defoamers and defoamers. The effect is ideal and the effect is obvious. Customer trial feedback effect is good.
(Picture: Nanhui defoamer sample)
The source manufacturer of Nanhui defoamer can solve various industrial foam problems in a targeted manner. If you encounter foam problems in related industries, please call Nanhui Technical Specialist, Ms. Yoyo 0086 134 2860 1010.
