In the construction industry, foam has an important impact on production efficiency and product quality. To solve this problem, defoamers are widely used in the preparation and construction process of building materials. However, there are many types of defoamers, and choosing the appropriate defoamer is crucial for ensuring building quality.

According to their different chemical compositions, commonly used defoamers in the construction industry are mainly divided into organosilicon defoamers, polyether defoamers, mineral oil defoamers, etc. These defoamers have their own characteristics and are suitable for different building scenarios.

Organic silicone defoamers are widely used in the construction industry due to their low surface tension, high activity, and good chemical stability. They are suitable for concrete mixing, coating construction and other scenarios, can effectively destroy and inhibit the formation of foam, and improve the stability and strength of materials.

Polyether defoamers are favored for their high temperature resistance, strong alkali resistance, and other characteristics. They are suitable for the preparation of building materials that require high-temperature treatment or strong alkaline environments, such as the preparation of certain special coatings.

Mineral oil defoamers have been applied in some low-end construction markets due to their low price and wide range of sources. However, it should be noted that mineral oil defoamers may pose certain hazards to human health and the environment, so the dosage and handling should be strictly controlled when used.

When selecting defoamers, in addition to considering their chemical composition and characteristics, a comprehensive evaluation should also be conducted based on specific construction environments and material requirements. For example, for building materials that require high strength and stability, organic silicone defoamers with excellent defoaming performance and chemical stability should be selected; For building materials that require high temperature resistance or strong alkaline environments, polyether defoamers should be selected.

In addition, attention should be paid to the environmental performance of defoamers. With the increasing awareness of environmental protection, more and more construction companies and workers are paying attention to the environmental indicators of defoamers. Therefore, when choosing defoamers, priority should be given to environmentally friendly defoamers that are harmless to human health and the environment, and are easy to degrade.