【 Building materials network 】Now, it can be said that with the increase of people's awareness of environmental protection coating There are many environment-friendly products in the market. Plastic Waterborne paint It will replace solvent based coatings in the future. Experts said that water-based coatings are environmentally friendly finishing materials, and it can be said that the prospect of this kind of coating is relatively promising.
　　
However, at present, the adhesion of water-based coatings to plastics is very poor, which may not be comparable to solvent based coatings, which restricts the development of plastic water-based coatings. Industry insiders explained that the painting of plastic products is an extension of the painting process of metal and composite materials. The equipment, technology, terminology and regulations of plastic coating also come from the general coating industry.
　　
In recent years, China's Plastic coating It has developed rapidly, from general decoration to special functionality, from solvent type to aqueous type. Industry insiders said that with the development of science and technology in China, plastic products are widely used in automobile, household appliances, building materials and other industries, and are also important materials for national economy and national defense construction.
　　
However, the knowledge to ensure the performance and quality of plastic coating other The substrate requirements are different. This is mainly because the surface of the coated parts can Metallic materials It is lower, and the chemical similarity between plastic substrate and coating is relatively high. Therefore, the properties of coating materials, the interface between coating and substrate, and the characteristics of the substrate itself must be carefully considered.
　　
The plastic will have some surface defects after processing and molding, so it is necessary to carry out secondary processing and paint to beautify the decoration and improve its corrosion resistance, weather resistance and service life. The basic components of water-based coatings are: different forms of water-based resins, pigments and filler And related auxiliary During construction, water is taken as diluent 。 Compared with traditional solvent based coatings, water-based coatings have the greater advantage of greatly reducing the amount of volatile organic solvents or basically eliminating the existence of organic solvents, so they are more in line with environmental requirements.