How does water-based defoamer become a foam terminator?
Water-based defoamer is a chemical additive specially used to eliminate foam in water-based systems
and is widely used in many industrial fields.
Paint industry
Application scenarios
Architectural coatings: When producing architectural coatings such as interior walls and exterior walls,
foam is easily generated during the mixing and dispersion of raw materials. If these foams are not eliminated
in time, they will affect the fluidity and leveling of the coating, resulting in defects such as fish eyes and
pinholes on the surface of the coating, reducing the decorativeness and protectiveness of the coating.
Industrial coatings: such as automotive coatings and ship coatings, which have extremely high requirements
for the quality of the coating. The presence of foam will cause problems such as splashing and orange peel during
the spraying process, affecting the uniformity and glossiness of the coating, and thus affecting the appearance
and performance of the product.
Effect:
Water-based defoamers can quickly penetrate into the foam, reduce the surface tension of the foam, and cause the
foam to break, thereby ensuring the normal production and construction of the coating and improving the quality of
the coating.
Papermaking industry
Application scenarios
Pulping process:
During the preparation of pulp, a large amount of foam will be generated due to mechanical stirring, chemical reactions
and other reasons. Foam will reduce the concentration and uniformity of pulp and affect the quality of paper.
Papermaking process: On the papermaking machine, the foam in the pulp will cause holes and uneven thickness in the
paper, reducing the strength and surface flatness of the paper.
Effect: Adding water-based defoaming agent can effectively control the generation of foam, ensure the quality of pulp
and the smooth progress of papermaking process, and improve the yield and quality of paper.
Textile printing and dyeing industry
Application scenario
Pretreatment: In the pretreatment process of desizing, scouring, bleaching and other pretreatment processes of textiles,
a large amount of water and chemical agents are required, which is easy to produce foam. Foam will affect the contact
between chemical agents and fibers and reduce the treatment effect.
Dyeing and printing:
In the dyeing and printing process, the stirring and circulation of dyes and auxiliaries will produce foam, resulting in
uneven dyeing, blurred printing patterns and other problems.
Effect:
Water-based defoaming agent can eliminate foam in pretreatment and dyeing and printing processes, ensure full contact
between chemical agents and fibers, and improve the quality and effect of dyeing and printing.
Food processing industry
Application scenarios
Fermentation process: During the fermentation process of foods such as beer, soy sauce, and yogurt, the metabolic activities
of microorganisms will produce gases such as carbon dioxide and form foam. Excessive foam will affect the fermentation process
and even cause the fermentation liquid to overflow.
Cleaning and stirring: Foam may also be generated during the cleaning and stirring of food raw materials, affecting production
efficiency and product quality.
Effect: The use of aqueous defoamers can control the foam during fermentation and processing to ensure the smooth progress
of production. At the same time, it is necessary to ensure that the defoamer meets food hygiene standards and does not affect
the safety and quality of food.
Sewage treatment industry
Application scenarios
Biochemical treatment: During the biochemical treatment stage of the sewage treatment plant, a large amount of foam will be
generated during the decomposition of organic matter by microorganisms. These foams will not only affect the normal operation
of sewage treatment equipment, but also cause environmental pollution.
Aeration process: The stirring action of the aeration equipment in the aeration tank will also produce foam. Excessive foam will
reduce the aeration efficiency and affect the sewage treatment effect.
Effect: Adding aqueous defoamers can effectively eliminate foam in the sewage treatment process, improve the operating efficiency
of sewage treatment equipment, and ensure the effect of sewage treatment.
Cleaning industry
Application scenarios
Industrial cleaning: In the industrial cleaning process of metal processing, electronic manufacturing and other industries, the cleaning
agent reacts chemically with the oil, impurities, etc. on the surface of the workpiece, which is easy to produce foam. Foam will affect the
rinsing effect of the cleaning agent, resulting in residual cleaning agent and dirt on the surface of the workpiece.
Civil cleaning: Detergents will also produce foam in the process of washing dishes and clothes. Excessive foam will increase the difficulty
of rinsing and water consumption.
Effect: Water-based defoaming agents can quickly break bubbles, improve cleaning efficiency, reduce the number of rinsing times,
and save water resources.
