Deepen the defoaming field, assist in efficient production, and provide one-stop foam solutions
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Defoamer easily eliminates foam.
Release Date:
2020-11-27
There are many types of defoamers, broadly categorized into organic siloxanes, polyethers, silicone–polyether grafts, imides, and amides. These defoamers offer rapid defoaming, long-lasting performance, and broad applicability across a wide range of substances and harsh environmental conditions—such as high temperatures, strong acids and bases—as well as in processes involving natural latex, food‑grade alcohols, microbial treatments, architectural coatings, petrochemical equipment, papermaking, and other industrial cleaning applications where foam formation is a concern.
Defoamer There are many types, but they can be broadly classified into organic‑silicone, polyether, silicone–polyether grafts, imides, and amides. These defoamers offer rapid defoaming, long-lasting performance, and a wide range of applications, even under harsh conditions such as high temperatures, strong acids and bases, and the presence of natural rubber latex—making them suitable for processes like food production, alcohol fermentation, microbial diagnostics, architectural coatings, petrochemical equipment, papermaking, and other industrial cleaning operations where foam is a persistent issue.
Thereafter, conventional standards have required specifying the applicable pH and temperature ranges for such defoamers. In certain manufacturing sectors, production is carried out under extreme conditions—such as high temperatures, strong alkalinity, or strong acidity—and selecting an appropriately matched defoamer can yield significant benefits.
(1) Defoamer Addition points: In paper mills, in addition to bleaching and washing processes, defoamers are typically added at the washer, concentrator, and sizing tank. Defoamers used in the papermaking process are usually introduced into the feed tank of the feeder, the pulp chest, and the sizing and surface‑sizing sections.
(2) Dosage of defoamer: Typically, two types of defoamers are used to ensure cost-effective and efficient performance in systems with high water content, with each added at a different point. For example, one defoamer is introduced upstream of the sizing machine, while the other is dosed into the circulation tank.
(3) Solutions for defoaming: Like amide‑based defoamers, certain defoamers can cause screen clogging and poor dispersion, leading to paper defects such as “fish‑eye” patterns. Some defoamers may require replacing the adhesive or enhancing its performance. Consequently, high‑moisture emulsion systems deliver excellent defoaming performance for both high‑viscosity and low‑viscosity calendered coatings.
In the metal laser‑cutting industry, cutting oils are typically used, with lubrication, rust prevention, cleaning, and water‑cooling performance playing crucial roles. Organic synthetic cutting oils represent a new generation of water‑based formulations; when combined with defoamers for flue‑gas desulfurization and various corrosion inhibitors, they offer stable performance, extended service life, and reduced environmental impact—making them a key focus of current research in the field of cutting oils.
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