Polyurethane (PU) was first developed by German scientists in the 1930s. German scientists polycondensed liquid isocyanate and liquid polyether or glycol polyester to form a new type of material. The physical performance parameters of the material are consistent with those of the time. Polyolefin materials are not the same, scientists named it polyurethane. With the end of the Second World War, the US chemical manufacturing industry flourished, and polyurethane flexible foam was synthesized in the 1950s. This was an important milestone in the chemical industry at that time and provided a solid foundation for the future development of the polyurethane industry. Technical basis.
Polyurethane foam is divided into two types: hard foam and soft foam. It has excellent elasticity, elongation, compressive strength and flexibility, as well as good chemical stability. In addition, polyurethane foam also has excellent processability, adhesiveness, heat insulation and other properties, and is a cushioning material with excellent performance.
The production of polyurethane materials has spread throughout North America. It is reported that the overall average annual growth rate of the North American polyurethane foam market is expected to reach about 6%. It is estimated that by 2020, the growth areas are mainly concentrated in the residential and industrial spray polyurethane foam application market, as well as military applications. In addition, polyurethane will also be used in the medical industry to treat wounds in a timely and effective manner.
