In recent years, polyurethane foams have gradually broadened their application fields because of their good performance, and they are increasingly favored by the majority of materials manufacturers. The demand for polyurethane rigid foam is growing at a faster rate. The average annual consumption growth rate in 2005-2010 is 16%. The global polyurethane foam market demand in 2015 was 9.46 million tons, and is expected to reach 12.74 million tons by 2024. The compound annual growth rate from 2016 to 2024 is 3.3%. Let's take a closer look at the application and development status of polyurethane in various fields.
Polyurethane foam is made of polymerized foamed isocyanate and hydroxy compound. According to its hardness, it can be divided into soft and hard, of which soft is the main variety. In general, it has excellent elasticity, flexibility, elongation and compressive strength; good chemical stability, resistance to many solvents and oils; excellent wear resistance, 20 times larger than natural sponges; and excellent processing Properties such as sex, heat insulation and adhesion. Emerging economies China and India are major consumers of polyurethane foam and are characterized by ample supply of raw materials and rapid expansion.
Application of polyurethane in coatings
Polyurethane technology started in Germany. In 1937, Mr. Otto Bayer invented polyurethane, which laid the foundation for polyurethane chemistry and developed polyurethane technology suitable for different applications. Since 1955, Bayer has applied various monomeric and polymeric isocyanates, polyesters, polyethers and acrylates to the production of polyurethane coatings. In 1965, the anti-fading two-component polyurethane coating was applied to aircraft and train fuselage; Bayhydrol® was used as an aqueous film-forming material in 1987; Bayhydur® and Bayhydrol® were put into use as an aqueous two-component polyurethane system in 1994. Polyurethane coatings dominate the wood coatings industry, accounting for 75% of the market, followe