China began the production process of unsaturated polyester resin in 1958. In the early 1960s, Changzhou Building Materials No. 253 Factory introduced the technology and equipment of the British Scott-Bader Company, making certain contributions to the development of China’s polyester industry and fiberglass industry. In the early 1970s, fiberglass products began to gradually spread from the military industry to the civilian market, and were promoted rapidly. In more than 40 years of development, China’s unsaturated polyester resin industry has led the world in development speed.
At present, unsaturated polyester resin has become one of the most widely used types of thermosetting resins in China and is widely used in fiberglass composite materials, artificial stone, coatings and other fields. This resin has the advantages of heat resistance, chemical corrosion resistance, excellent mechanical properties, good electrical insulation, and excellent process performance, making the composite material lightweight, high-strength, and multifunctional. It is often used as a matrix material for composite materials and is widely used in various fields of the national economy. The main upstream raw materials of unsaturated polyester resin include styrene, maleic anhydride, phthalic anhydride, ethylene glycol, propylene glycol, diethylene glycol, etc. The downstream industries mainly involve manufacturers of fiberglass composite materials, artificial stone, handicrafts, coatings and other products.
Unsaturated polyester resin manufacturers need to rely on large upstream petrochemical companies to ensure long-term and stable supply of raw materials. Fluctuations in raw material prices directly affect the production cost of unsaturated polyester resin. Therefore, the adequacy, stability and timeliness of raw materials are crucial to the normal operation of production companies and the speed of market response.
With the steady development of China’s national economy, the advancement of industrialization and urbanization, the rapid development of downstream industries has been promoted, and it has also directly promoted the development of the unsaturated polyester resin industry. Our country is committed to initially realizing the strategic transformation from a material power to a material power in 2020. New materials are the forerunner of the development of the materials industry and an important strategic emerging industry. The country has introduced a series of industrial policies to encourage technological innovation and green development of enterprises, and strive to realize the transformation from the traditional materials industry development model to a sustainable development path.
With the continuous upgrading of unsaturated polyester resin products and the improvement of composite material technology, composite materials based on unsaturated polyester resin are constantly replacing steel, stone and wood in some fields. This has caused the usage of unsaturated polyester resin to increase year by year, providing good opportunities for the development of the industry. As the scope of downstream applications continues to expand, the technical level of the unsaturated polyester resin industry is also constantly improving, and many technology patents emerge every year. The advancement of this technology provides the possibility for the application of unsaturated polyester resin in urban rail transit, high-speed railways, green buildings, wind power development and other industrial fields. It also improves product quality and performance, in line with the new national environmental protection law. Require.