Application and Development Status of Polyurethane Foam in Various Industries
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2018-12-07
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In recent years, polyurethane foams have gradually broadened their application fields due to their good properties, and they are increasingly favored by most material manufacturers. The demand for rigid polyurethane foams is growing at a faster rate. The average annual consumption growth rate in 2005 - 2010 was 16 per cent. In 2015, the global polyurethane foam market demand was 9.46 million tons and is expected to reach 12.74 million tons by 2024. The CAGR from 2016 to 2024 is 3.3 percent. Let's take a closer look at the application and development of polyurethane in various fields. Polyurethane foams are made from polymerized foam isocyanates and hydroxyl compounds. According to its hardness, it can be divided into soft and hard, of which soft is the main variety. Generally speaking, 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 sponge; and excellent processing properties, such as sex, heat insulation and adhesion. The emerging economies of China and India are the main consumers of polyurethane foam, which is characterized by abundant supply of raw materials and rapid expansion. Application of Polyurethane in Coatings Polyurethane technology began in Germany. In 1937, Mr. OttoBayer invented polyurethane, laying the foundation for polyurethane chemistry and developing polyurethane technology suitable for different applications. Since 1955, Bayer has used various monomeric and polymeric isocyanates, polyesters, polyethers and acrylates in the production of polyurethane coatings. In 1965, anti-fading two-component polyurethane coatings were applied to aircraft and train fuselages; Bayhydrol®Used as an aqueous film-forming material in 1987; Bayhydur®and Bayhydrol®It was put into use as a two-component polyurethane aqueous solution system in 1994. Polyurethane coatings dominate the wood coatings industry, accounting for 75% of the market, followed by automotive refinish paint, accounting for more than 40%. Polyurethane technology is also more and more widely used in anti-corrosion coatings, plastic coatings and automotive raw paint, accounting for 10% of the market. In recent years, polyurethane coatings have grown at a rate of 15%. The application of polyurethane foam in building insulation In 2014, the construction industry accounted for 1/4 of the total transactions. Increases in construction costs coupled with regulatory intervention are expected to continue to drive growth in the sector. With the continuous expansion of the building insulation and energy saving market, the demand for polyurethane rigid foam is expected to usher in explosive growth. Polyurethane rigid foam is mostly closed cell structure, good heat preservation effect, light weight, high specific strength, convenient construction, etc. It also has sound insulation, shockproof, electrical insulation, heat resistance, cold resistance, solvent resistance and other characteristics.. Insulating materials for insulating materials for refrigerators and freezers, freezers, refrigerated vehicles, buildings, storage tanks and pipes, and small amounts of insulating materials for non-insulating applications, such as imitation wood and packaging materials. Generally, the lower density polyurethane rigid foam is mainly used as a thermal (insulating) material, while the higher density polyurethane rigid foam can be used as a structural material (such as wood). The New York-based company Voodoo has introduced a new thermoplastic polyurethane (TPU) fiber NinjaFlex that expands its fiber range by adding fully elastic and semi-elastic thermoplastic polyurethanes. It is reported that the material is very suitable for 3D printing. The main commercial range of this material includes seals, plugs, textiles, hoses and other functional parts that require elasticity in order to function well. Due to its high tension, it is not easy to change the strength, wear resistance, and it is not easy to damage in contact with the oil surface. This is the traditional disadvantage of rubber. It is also easy to recycle and relatively environmentally friendly, which is an increasingly important factor in this day and age. The unique advantages of polyurethane foam make it a darling in the automotive and medical fields, because these two fields usually require a large number of gaskets and hoses. Due to its durability and flexibility, it is also a very popular shoe material. It is not surprising that it works well for rubber dinghies and other inflatable objects. At present, the price of polyurethane foam is relatively high. It is believed that with the advancement of technology and the development of various industries, the cost of polyurethane rigid foam materials will be effectively reduced, and the application of polyurethane rigid foam materials will become more popular.
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