The function of polyurethane adhesives
2025,12,15
Polyurethane Adhesive is a type of adhesive, and its base material is polyurethane polymer. Polyurethane is a type of polymer whose molecular structure contains amino and isocyanate functional groups. These functional groups can chemically combine with other substances in chemical reactions, forming a strong bond.
The basic functions of polyurethane adhesives are as follows:
1. Bonding effect
The main function of polyurethane adhesives is to bond different materials and surfaces, making them closely connected to achieve structural strength and sealing performance. The molecular structure of polyurethane adhesives is highly adjustable and can bond a variety of different types of materials, including metals, plastics, rubber, wood, etc. This versatility enables polyurethane adhesives to have extensive applications in various industrial fields.
2. Sealing function
Polyurethane adhesives are also frequently used in sealing applications, such as in the construction industry for sealing Windows and door frames to enhance insulation and waterproofing performance. Polyurethane adhesives can fill and seal irregular surfaces and gaps, preventing the penetration of water, air, dust and other harmful substances, thereby enhancing the comfort and durability of buildings.
3. Structural connection function
In some structural connection applications, polyurethane adhesives can replace mechanical connections or welding. It can effectively disperse and transfer stress, while providing shock resistance and shock absorption performance. This feature is very useful in fields such as automobiles, aircraft, ships and construction.
