Defoamer

Defoamers are developed using the latest patented technology and are synthesized from polyether and other components. It is suitable for the defoaming and stabilizing effect of cement-based material systems under strong alkaline conditions. At a pH of 14, it does not break the emulsion, does not float oil, has good defoaming and foam suppression effects, can eliminate harmful bubbles, stabilize beneficial bubbles, and is non-toxic, odorless, and will not cause any pollution to the environment.

Product	Dosage	Benchmarking products	Product description
DF130P	0.02-0.3%		It is a special polyether defoamer. It is completely silicon free, has good defoaming and foam suppression effects, good water solubility and dryness, strong acid and alkali resistance, and can eliminate foam in various water-based systems.
DF230L	0.10 to 0.30 kg per 100 kg of cement (binder)	sika 753w	It is used to manufacture architectural quality concrete satisfying the requirement for a largely voidfree concrete surface. It is particularly suitable for SCC and flowing concretes.
DF330L	0.10 to 0.30 kg per 100 kg of cement (binder)		It is used to manufacture building grade concrete that meets the requirement of virtually no voids on the concrete surface. It is particularly suitable for SCC, Plain concrete, Mass concrete and Precast concrete.

Defoamers are additives used in concrete to control and reduce the formation of foam and air bubbles during mixing and pouring. Excess foam and entrapped air can weaken the concrete’s strength and durability, so defoamers help improve the final quality of the concrete.

Types of defoamers used in concrete include:

Oil-based Defoamers: These contain light oils or mineral oils that spread on the surface of foam and cause it to break down.
Surface-active Agents (Surfactants): These reduce the surface tension of foam, causing it to collapse.
Silicone-based Defoamers: These are highly effective and are commonly used in concrete to rapidly eliminate foam.

Uses: