In the field of construction industry in the new century, with the increasing awareness of environmental protection and the deepening of sustainable development concepts, traditional building materials and processes are undergoing unprecedented changes. Among them, defoamers, as important auxiliary materials in the construction production process, have become a key link in promoting the industry's transformation towards low-carbon and environmental protection through their green development.

Green defoamers refer to those chemicals that have little impact on human health and ecological environment in the whole process of production, use and waste treatment, and can effectively inhibit or eliminate foam generated in the preparation of building materials. They not only improve production efficiency and reduce resource waste, but also significantly reduce the carbon footprint of building products, which is an important cornerstone for achieving green buildings.

Technological innovation is an important productivity driving the vigorous development of green defoamers. By utilizing renewable resources such as plant oils, microbial fermentation products, etc., new bio based defoamers are developed, reducing dependence on non renewable resources such as petroleum. Through precise chemical design, efficient and low toxicity defoamers have been developed, reducing potential harm to the environment and human health. At the same time, exploring the recycling mechanism of defoamers in the production process, reducing waste emissions, and overall improving resource utilization efficiency.

Nowadays, green defoamers are used in the production process of building concrete. The use of bio based defoamers can effectively control the bubbles generated during concrete mixing, improve concrete strength and durability, and also reduce water resource consumption. In the future, with the continuous advancement of materials science, biotechnology, and information technology, green defoamers will become more intelligent and customized, meeting the urgent demand of the construction industry for high-performance and low environmental impact materials. At the same time, the support of government policies and the improvement of public environmental awareness will also create a more favorable environment for the research and application of green defoamers.