In-depth analysis: What is UV coating
In the world of coatings, UV coatings, as a new and high-profile product, have gradually entered people's vision and are widely used in many fields. But there are still many people feel strange to it, the heart can not help but wonder: uv paint is what? Next, we will learn more about this unique paint.
UV coating, Ultraviolet Curing Coatings (Ultraviolet Curing Coatings) is short for, it is a kind of ultraviolet (UV) light irradiation, can rapidly photopolymerization or photocrosslinking reaction, thereby transforming from liquid to solid coating coatings. Unlike traditional coatings, which rely on natural drying or heat drying, the curing process of UV coatings relies on ultraviolet excitation, which gives it a number of significant advantages.
From the perspective of composition, UV coatings are mainly composed of oligomers, active diluents, photoinitiators and various additives. The oligomer is the main film forming substance of UV coating, which determines the basic properties of the film, such as hardness, flexibility, chemical resistance and so on. Active diluents, also known as monomers, not only regulate the viscosity of the coating, making it easier to construct, but also participate in the curing reaction, which also has an important impact on the performance of the coating. Photoinitiator is a key component of UV coatings that can cure quickly under ultraviolet irradiation. After absorbing ultraviolet energy, it will produce free radicals or cations, which will trigger polymerization between oligomers and active diluents. The auxiliaries, such as leveling agent and defoamer, can improve the construction performance of the coating and the appearance quality of the coating film.
UV coatings have a wide range of applications. In the furniture manufacturing industry, UV coating is used in a large number of wood surface coating, can quickly form a hard, wear-resistant, high-gloss film, not only improve the beauty of the furniture, but also enhance its scratch resistance, wear resistance performance, extend the service life of the furniture. In the field of electronic products, such as the shell of mobile phones and computers, UV coatings can provide good protection and decorative effects, making the surface of the product more smooth and delicate, while having a certain anti-fingerprint and anti-fouling ability. In addition, in printing, automotive parts and other fields, UV coatings also play an important role.
The advantages of UV coatings are not only reflected in performance, but also their environmental characteristics have attracted much attention. Because UV coatings produce almost no volatile organic compounds (VOCs) during the curing process, it reduces the pollution to the environment and the harm to human health, and meets the requirements of today's society for green environmental protection.
In short, uv coating is a new type of coating with a unique curing method, special composition and a wide range of applications. With the continuous progress of technology and the deepening of people's understanding of it, UV coatings will certainly show a strong vitality in more areas in the future, bringing more convenience and surprises to our life and production.