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In recent years, with the rapid growth of the national economy and the continuous improvement of people's living standards, the production and sales of paints in China have been growing at a faster rate. However, compared with developed countries, the consumption structure of paint products in China is not very reasonable. Highly polluting paint products still occupy a large market share, which brings more serious harm to the environment and the health of construction workers. With the enhancement of people's awareness of environmental protection and the increasing improvement of environmental protection regulations, countries around the world are encouraging and promoting the use of green, energy-saving, and material-saving new paint products. Among them, water-based coatings are beneficial to the rational use of resources, prevent environmental pollution, protect human health, and do not contain or contain less VOC (volatile organic compounds) and harmful air pollutants (HAP). This has become a hot spot for research and development, promotion, and application of highlights and growth points.

Compared with other low-pollution coatings, water-based coatings have become the preferred varieties because of their achievable technical ways, wide application, safety, and relatively simple construction. It is more concerning to the majority of coating scientists and coating users. In recent years, it has been developed to a certain extent in China and has received unprecedented attention. However, the share of water-based coatings in the industrial coating field is still small. Therefore, improving the proportion of water-based industrial coatings, reducing pollution in the environment, and reducing the health hazards of construction personnel have become common issues facing the coating industry in China.

Classifications of water-based coatings

Distinguished by dispersion form, water-based coatings include water-soluble coatings, water-dilutable coatings, and water-dispersible coatings (latex coatings). Their dispersion mechanisms are different, and the performance of the products also has a big difference. However, regardless of the type, they all use water as a solvent or dispersion medium.

According to the distinction between film-forming substances, water-based coatings can be divided into water-based acrylic coatings, water-based polyurethane coatings, water-based epoxy coatings, and so on. In recent years, the film-forming substances of water-based coating products have had a tendency to develop in the direction of mixed modification.