我国彩涂板涂料生产起源于20世纪80年代，当时原化工部组织力量自行研制。1987年上海振华造漆厂引进美国 Parker公司的预处理技术及 Relanceuniversal公司的系列卷材涂料。目前国内卷材涂料生产线已超过30条。我国目前已有70条卷材涂料生产线，近期仍将有32条生产线在建;由于生产厂家众多，未来三年将是国内卷材涂料行业的快速发展期。
The development of coil coatings in China has gone through three periods. In the first stage, oil-based resins, alkyd resins and phenolic resins were used as binders, red Dan and other lead-containing and chromium-containing coatings were used as rust-proof
components; in the next stage, the surface of synthetic resins was fine. In addition to the above-mentioned binders, epoxy resins, unsaturated resins, oxidized rubber, chlorosulfonated polyethylene and silicate resins were selected. The third stage
is in recent years, because of the continuous decline of environmental conditions and the strengthening of environmental protection requirements, it has replaced the polluted base materials and toxic anti-rust coatings that endanger the environment.
Material has been attached great importance and has become the main development direction of new anticorrosive coatings.
The development of coil coatings in China has a history of 20 years, but it has developed rapidly in the past five or six years. Coil coating is one of the indispensable construction materials in the production line of color coated sheet. It can be applied on a variety of substrates. Coil coatings were put into the market as early as the 1930s. After World War II, in order to recover the war wounds, the construction industry developed vigorously. Pre-coated coils were widely used because of their light weight, excellent performance and low cost.
China's coil coating production originated in the 1980s, when the original Ministry of Chemical Industry organized its own development. In 1987, Shanghai Zhenhua Paint Factory introduced the pretreatment technology of Parker Company and Relance Universal Company's series of coil coatings. At present, there are more than 30 domestic coil coating production lines. At present, there are 70 coil coatings production lines in China, and 32 will be under construction in the near future. Because of the numerous manufacturers, the next three years will be the rapid development period of domestic coil coatings industry.
With the rapid expansion of the number and scope of color plate application, coil coating has entered a period of rapid development. In the future, the development trend of color board and its coatings will tend to high performance, environmental protection and economy, fast drying and curing and self-cleaning.
High-performance coil coating: The appearance of cold-pressed colored steel sheet is very popular in the market. The production of this steel sheet requires that the pattern be directly pressed on the steel sheet by cold-embossed roller before winding up of the colored coating line. This product has high requirements on the processing performance of the coating, and its price is lower than that of PVDF. Among them, fluororesin coatings have attracted much attention due to their excellent weather resistance, chemical resistance, salt spray resistance and low surface properties. Some domestic fluororesin coatings manufacturers have developed FEVE series fluororesin coatings for coil coatings. The performance of this kind of fluororesin used in coil coatings, especially the super-weatherability, anti-contamination, construction and economic performance of the coatings, is considered to provide more high-performance protection for color panels in the application fields of building steel structures, bridges and so on. The application of high-performance coil coating in cold-pressed colored steel sheet is also very popular in the market. It is required that the pattern be directly pressed on the steel sheet by cold-embossed roller before the coiling of the colored coating line. This product has high requirements on the processing performance of the coating and its price is lower than that of PVDF.
Environmentally friendly coil coatings: At present, the solid content of most coil coatings is about 60%. In order to reduce VOC, it is necessary to develop high solid content (70%), water-borne and UV powder coatings. Among them, powder coatings technology has been applied in the production of coil coatings in China. There is a great space for the development of coil powder coatings in China in recent years. With the enhancement of people's awareness of environmental protection and the requirement of cost reduction, coil powder coatings are the trend of development. It is predicted that coil coating will usher in the era of powder coating. However, due to various reasons, so far there is no really meaningful powder coil coating line in China, and people pay little attention to it.
Rapid drying curing coating system: In order to improve production efficiency, the market requirements can reach a running speed of more than 180 m/min, guaranteeing performance and appearance, curing time of 18-20 s.
With the development of national economic construction, the demand for special steel products such as pipeline steel, container plate, construction steel structure, bridge, railway, ship axle and so on will increase, which will promote the technological progress and market development of self-cleaning coil coatings for outdoor color plates. This kind of coatings not only has good coloring, anti-corrosion and decorative properties of organic coatings, but also has high strength and easy processing. It is a kind of coatings product suitable for deep processing of color plates. In terms of appearance, self-cleaning coatings have superior anti-pollution properties. The surface of color panels washed by rainwater can play a self-cleaning role to achieve the effect of no dust and no traces. It is the best choice for the construction industry. Prior to this, self-cleaning coil coatings have been owned by internationally renowned coatings.