Defoamer / Antifoam

A chemical additive used to reduce and hinder the formation of foam is called a defoamer or anti-foaming agent. Both terms are often used  interchangeably. The difference types of defoamers used are: –

  • Silicone based defoamers

  • Water based defoamers

  • Powder defoamers

  • EO/PO based defoamers

  • Alkyl polyacrylates

In many manufacturing, commercial and industrial process applications, undesired foaming causes severe problems. So careful selection of defoamers and antifoams is necessary to ensure the perfect and maintained operation of the system with full efficiency.

Duro Kimia Sdn Bhd is a supplier of high quality Silicone-based defoamer / antifoaming agent from Momentive Performance Materials, which we are selling to a wide range of industrial applications. The most common grades available are: –

Mechanism of Silicone Antifoam

Due to their flexible backbone and unique surface activity, silicones can do many things very well. Existing foam is rapidly collapsed by silicone defoamers.

Due to the smooth surface elasticity and surface viscosity of foam film, it is difficult to break it down. Thanks to the Silicone’s unique features (low surface and interfacial tensions) they de-stabilize the film. This property supports them to flow over the foam film. The antifoam penetrates the pores in the foam and subsequently ruptures them. This is done by the silicone’s low interfacial properties and surface tension, which has the ability of weakening the  foam-stabilization properties and in turn collapse it.

Advantages of Silicone Antifoam

  • Least expensive

  • Low use levels – active at low concentrations

  • Inert – does not interact with other process ingredients

  • Longer, more durable and persistent

Common Applications of Silicone Antifoam

  • Chemical manufacturing

  • Waste water treatment

  • Textile

  • Oil and gas

  • Pulp and paper

  • Food processing

  • Metal Working Fluids

  • Household products

  • Paint and coating

  • Pharmaceutical