In future projects, coating-coated and osmotic-infiltrated inorganic waterproof coatings will find more applications. Water-repellent technology combining structural self-waterproofing concrete and flexible waterproof coatings (such as polyurethane waterproof coatings) has been used in engineering applications. This type of waterproofing solution will also be valued and developed. For the long-term wet structure, the application of elastic coating will increase, and its variety will be based on water-based acrylic paint or water-based acrylic-cement composite coating. The combination of low pvc elastic latex paint and topcoat composite coating. Mainly.

1 Development and Application of High Performance Waterproof and Corrosion Resistant Coatings

The development and application of high performance waterproof and corrosion resistant coatings will receive attention. Traditional asphalt waterproof coatings will gradually be replaced by modified asphalt waterproof coatings, especially polyurethane waterproof coatings and polymer cement waterproof coatings due to poor performance. Waterproof coatings, acrylic waterproof coatings and rubber modified thick asphalt waterproof coatings will be the focus of development. Polyurethane waterproof coating will gradually change from coal tar type to non-tar type and pure urethane type, and eventually eliminate tar-type polyurethane waterproof coating completely.

2 environmental protection waterproof coating

Environmental protection is the basic principle that humans need to follow in the development of modern industry. Overseas waterproof coatings are developing towards water emulsion and environmental protection, such as the development of high-performance emulsion polymer modified asphalt waterproof coatings, water emulsion polyurethane waterproof coatings and so on. However, the market share of China's water-emulsion polymer modified asphalt waterproof coating is still very low, and the production technology of water emulsion polyurethane waterproof coating is not yet mature, and it is still in the research and development stage of the laboratory. China's relatively mature waterproof coating is polymer emulsion waterproof coating and polymer cement waterproof coating. With the introduction of foreign products and the demand of China's waterproof coating market, cement polymer modified asphalt waterproof coating, water emulsion polyurethane waterproof coating will receive further attention and development.

3 Development of multifunctional waterproof coatings

Earlier, China focused on the development of polyurethane waterproof coatings, polymer emulsion cement waterproof coatings and high-solids rubber modified asphalt waterproof coatings. For a period of time in the future, the development direction of new varieties of waterproof coatings in China will be high-performance and multi-functional coatings. Industrial advanced countries have begun to develop in the direction of multifunctional waterproof coatings. For example, aluminum powder emulsion reflective coatings and white polyacrylate reflective coatings in the United States and France, the coating film has not only waterproof function, but also can reflect sunlight and ultraviolet rays, reduce the temperature of the building structure and extend the service life of the paint. In the future, heavy-duty, heat-insulating, reflective waterproof coatings will be appreciated and welcomed. With the development of nanotechnology and infiltration in various fields, research on the use of nanomaterials to improve the performance of waterproof coatings (such as durability and elasticity) will be gradually applied to the production and application of waterproof materials. Currently, the use of Nano TIO2 has emerged. Research on improving the aging resistance of polymer emulsion waterproof coatings such as nano-SiO2-x and nano-ZnO; research of improving the performance of two-component polyurethane waterproof coatings with nano-CaCO3; increasing the strength and ductility of two-component polyurethane waterproof coatings with nano-materials Research.

4 new construction tools

Some two-component waterproof coatings, such as two-component polyurethanes, polymer emulsion cement coatings, etc., need to be mixed on site at the time of construction. For a two-component waterproof coating with a combination of a liquid and a powder, the powder must be fully dispersed. Otherwise, the performance of the coating film may be impaired, thereby adding difficulty to the on-site construction. Solving two-component coating film mixing equipment and uniform film thickness construction equipment is of great significance to ensure the quality of the coating film and improve the use effect.

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