In 2004, the total output of radiation curing coatings in China reached 80000 tons
. Now UV technology has been developed by leaps and bounds, especially with its excellent surface performance, high curing speed, low pollution, energy saving and other characteristics, it has become an environment-friendly technology. Its application range ranges from the original floor coating and wood coating to the current ink and plastic coating, motorcycle coating, automobile coating, and more advanced optical fiber/optical cable, optical disk, solar film, flat panel display functional film, and the production of Mu Naiyin in archaeology. In the words of the chairman of the international radiation curing Committee, "UV technology is invisible, but everywhere."
UV coating has been developed for 40 years in the world, but its industrialization in China is less than 10 years. Therefore, UV coating is still a new coating in China. UV coating is a kind of coating that can realize quick drying under the action of ultraviolet (UV) photons. The difference between UV coating and general solvent based coating is that during the film forming process, that is, the construction process from liquid to solid, UV coating has no or almost no solvent volatilization, so as to achieve zero or low emission of organic volatiles. It can be called an environment-friendly coating
according to the latest statistics, the global extruder, as an important processing equipment, produced about 240000 tons of uvpaint in 2004, while China had 80000 tons, accounting for one third. Chinese enterprises are mainly concentrated in the Yangtze River Delta and the Pearl River Delta
some raw materials in UV products are mainly produced in East China and North China. Oligomers increased by 58% in 2004 compared with 2003, with an annual capacity of about 24300 tons. In 2004, the growth rate of active monomers for the manufacture of nanotube yarn and cloth was - 1.6%. This is because the technical requirements for monomers are quite strict, and many small factories have to give up because of their poor quality. At present, there are only a few manufacturers in China, such as Jiangsu Sanmu, Tianjin Tianjiao, Nantong Litian, and so on. Therefore, there is a negative growth trend. From this point of view, the single market should be a promising market. As a manufacturer specializing in the production of UV resin and monomer, Jiangsu Sanmu has an annual resin production capacity of about 8000 tons. The monomer introduced advanced technology in 2005 and will build a 10000 ton/year production plant. In terms of oligomer and monomer output, Jiangsu Sanmu ranks first in China. At present, the annual production capacity of photoinitiators in China is about 18000 tons. Beijing Tsinghua unisplenum Yingli company and Changzhou huati company have large production scale and great product influence
the end products of UV products are UV curable coatings, UV curable inks, UV curable adhesives, etc. the origin is mainly concentrated in South China, East China, Northeast China and Beijing Tianjin. In 2004, the production capacity of UV curing coatings was about 498000 tons, with the largest output of bamboo and wood coatings, about 14490 tons; The second is paper and plastic gloss coatings. The manufacturers with greater influence include Hunan Yada, Guangdong Xigui, Tianjin Shenglin, etc. In 2004, the production capacity of UV curable ink was about 21525 tons. The company has also established a complete R & D system for offset printing, silk screen printing and photo imaging solder resist. The company mainly has three core R & D centers + several regional R & D centers for photo etching ink. The enterprises with greater influence include Shenzhen Meihua ink, cactus ink, Zhongyi ink company in Zhongshan, Guangdong, etc. In 2004, the production capacity of UV curing adhesive was about 550 tons, mainly for DVDs and handicrafts
in the future development, radiation curing will further march into automotive coatings. Three dimensional curing equipment has appeared in China, and the film performance and decorative effect of UV curing coatings are far better than traditional coatings. The traditional solvent based automotive coatings will be impacted. Radiation curing coatings, water-based coatings and powder coatings are environmentally friendly and will be the development direction of coatings in the future. In addition to environmental protection, radiation curing technology is also expanding to water-based and powder, integrating the environmental protection performance of other coatings, so it has the best prospect