Coating is a historic industrial product form. By coating on the surface of the object, a continuous solid-state film is formed, and a solid barrier is formed to protect, decorate, cover the product's defects and other special effects. The decoration and cover surface defects are the most basic functions of coating. With the rapid development of the economy, people have continued to improve the quality of life, and many emerging industries have emerged, and various industries have put forward higher and updated requirements for coatings. Modern coatings are gradually becoming a type of multi-functional engineering material. It is an important industry in the chemical industry, and nanotechnology is promoted in the field of promoting the functionalization of coatings.
Coatings are generally composed of four basic ingredients: membrane substances (resin, lotion), pigments (including physical pigments), solvents and additives (additives). Among them, the pigment component is the most important part of the functionality of the coating. This part is overwritten through nano decentralized technology and the surface of nanoparticles. Functional nanoparticles are made of particles at once and can be stable and evenly distributed in solvents and carriers. The strange and chemical properties of nano materials can be exerted, and at the same time, it will increase the adhesive strength and hardness of the coating. The coating is also a type of nano-coating. At present, the functions involved include insulation and anti-infrared rays, anti-aging, anti-blue light, anti-static, anti-paste, radiation protection, antibacterial and anti-mildew, anti-corrosion, hardened, negative ions, etc.
In addition to their singular functionality, nano-coatings also have high transparency properties. Due to the ultra-fine characteristics and good dispersion of nano particles, nano-coatings usually show excellent transparency, such as anti-static coatings and hard coatings used in the electronic information industry, and the transparency can reach more than 90%, realizing the invisible existence in the tangible. PC and PMMA plates widely used in partitions, windows, and equipment covers in electronic production workshops must be treated with anti-static coating, and electronic and electrical display panels need to be hard coated, and nano-coatings achieve functionality while achieving no impact on visibility and achieving "invisibility".
In the future, under the dual promotion of the market and nanotechnology, the coating industry will develop in a more refined and high-end direction, and nano-coatings will be promising.
