Polyurethane adhesives have become one of the most widely used types of adhesives in the industrial field due to their outstanding bonding performance, excellent flexibility, good impact resistance and low-temperature resistance. Its unique chemical structure enables the preparation of products ranging from soft elastomers to hard solids through formula design, to meet the demands of various industries.
In the transportation industry, polyurethane adhesives are crucial materials. It is widely used for bonding automotive interior parts, such as instrument panels, ceilings, door panels, carpets, etc., providing a strong and environmentally friendly bond. In the field of wind power, it is used to bond huge composite materials of wind turbine blades. Its excellent fatigue durability ensures the long-term stable operation of the blades in harsh environments. The manufacturing of high-speed rail carriages and aircraft interiors also heavily relies on their high strength and shock-absorbing properties.
In the textile and footwear and apparel industries, waterborne polyurethane adhesives have become mainstream. It is used for laminating various functional fabrics to produce composite fabrics that are waterproof, breathable, windproof and warm, and is widely applied in outdoor clothing, sportswear and military equipment. In the footwear industry, especially in the production of sports shoes, it is almost the only choice for sole bonding, providing key properties such as softness, fold resistance and high peel strength.
In the wood processing and packaging industry, polyurethane adhesives (especially one-component moisture-curing types) are used to bond wood for the manufacture of composite boards, solid wood panelling and furniture. It has high bonding strength, good weather resistance, and can even overcome the internal stress caused by thermal expansion and contraction of different materials. In the field of flexible packaging, it is used as a composite film adhesive for packaging bags of food, medicine, etc., and has good resistance to media and hygiene safety.
In the construction industry, polyurethane sealants and structural adhesives are widely used. They are used in curtain wall installation, insulating glass sealing, door and window joint filling and concrete repair, providing excellent elasticity, adhesion and weather resistance, and can adapt to the thermal expansion and contraction of the base material.
In addition, in the electronics and electrical industry, polyurethane adhesives are also used for sealing, fixing and protecting components. In conclusion, polyurethane adhesives, with their irreplaceable comprehensive performance, have deeply permeated all aspects of modern industry and are the "industrial monosodium glutamate" driving the development of many industries.
