Defoaming agent

Abstract

The invention relates to a defoaming agent, in particular to a defoaming agent for textile. The defoaming agent is prepared from the following components in parts by weight: 10 to 20 parts of silicone grease, 15 to 25 parts of polyether, 3 to 6 parts of sodium lauryl sulfate, 20 to 30 parts of aliphatic hydrocarbon, 2 to 5 parts of sodium chloride, 1 to 3 parts of cosolvent, and 130 to 180 parts of deionized water. The defoaming agent has the characteristics that the silicone grease, an emulsifier, a thickener and the like are mixed with a proper amount of water to be mechanically emulsified; the surface tension is small, the surface activity is high, the defoaming ability is strong, the usage amount is small, and the cost is low; most of air bubble mediums can be defoamed; the heat stability is better, and the defoaming agent can be used in the broad temperature range; the chemical stability is better, the reaction with other matters is difficult, the defoaming agent can be used in acid, alkaline and salt solutions, and the damage to product quality is avoided; the defoaming agent can be applied to defoam in the dyeing, refining and sizing process of textile industry.

Description

technical field [0001] The invention relates to a defoamer, in particular to a defoamer for textiles. Background technique [0002] A large amount of surfactants are used in the dyeing and finishing of textiles, so it is inevitable to generate air bubbles in the working bath. However, air bubbles will not only lead to uneven dyeing and finishing, but more importantly, will cause the loss of working fluid, which will affect the normal progress of textile dyeing and finishing in severe cases, so defoamers must be used. Defoamers are generally divided into two types: foam breakers (temporary defoamers) and foam suppressors (permanent defoamers). Foam suppressors can not only break foam, but also have a long-lasting foam suppression effect. [0003] Chinese invention patent application CN 103103773 A discloses a defoamer for textiles, which consists of the following components in parts by weight: 3-5 parts of polydimethylsiloxane, 1-5 parts of hydroxyl-terminated polydimethylsi...

AI Technical Summary

Problems solved by technology

However, air bubbles will not only lead to uneven dyeing and finishing, but more importantly, they will cause the loss of working fluid, which will affect the normal progress of textile dyeing and finishing in severe cases, so defoamers must be used