Development and Application of Plastic Waterborne Coatings

Today, it can be said that as people's awareness of environmental protection increases, there are a lot of environmental protection products in the paint market influx into the market, and plastic waterborne coatings will replace solvent-based coatings in the future. Experts say that water-based paint is an environmentally friendly coating material, and it can be said that the future of this paint is still relatively promising.

However, the current water-based paints have poor adhesion to plastics and may not be comparable to solvent-based paints, which restricts the development of water-based paints for plastics. Industry insiders explained that plastic product coating is an extension of the metal and composite coating process. Plastic coating equipment, technology, terms, and regulations also come from the general coating industry.

In recent years, China's plastic coatings have developed rapidly, from general decorative to special functional, and from solvent-based to aqueous-based formulations. According to industry sources, with the development of science and technology in China, plastic products are commonly used in industries such as automobiles, home appliances, and building materials, as well as important materials for national economy and national defense construction.

However, the knowledge to ensure the performance and quality of plastic coating is not the same as that required by other substrates. The main reason is that the surface energy of paint components is lower than that of common metal materials, and the chemical similarities between plastic substrates and coatings are relatively high. Therefore, the properties of coating materials, the interface between coatings and substrates, and the substrate itself must be seriously considered. The characteristics.

Plastics will have some surface defects after being processed. Therefore, secondary processing must be carried out and coatings should be applied to paints to enhance the decorative effect and improve their corrosion resistance, weather resistance and service life. The basic composition of waterborne coatings is: different forms of waterborne resins, pigments, fillers and related auxiliaries. Water is used as a diluent during the construction process. Compared with traditional solvent-based coatings, the biggest advantage of water-based coatings is that they greatly reduce the amount of volatile organic solvents or substantially eliminate the presence of organic solvents, thus more in line with environmental requirements.