Understanding the composition and working principle of papermaking defoamers can help us better select and apply these products. This article will delve into the main components and mechanisms of papermaking defoamers.

Papermaking defoamers usually contain organic silicon, polyether, mineral oil and other components, each with its own characteristics, suitable for different papermaking processes and raw materials. Organic silicon has excellent high temperature resistance, acid and alkali resistance, and rapid defoaming ability, but the cost is relatively high.

Polyether has good environmental friendliness and is suitable for occasions with high environmental requirements, with moderate defoaming speed. Mineral oils have a lower cost, but attention should be paid to their potential impact on paper properties.

Papermaking defoamer can achieve defoaming and foam suppression effects by reducing the surface tension of liquid, destroying the stability of foam film or accelerating the diffusion of gas in foam. Its working principle involves chemical and physical processes such as adsorption, spreading, permeation, etc.