Professional Polymer Technology
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Polyurethane glue is a high-grade adhesive, with excell […]
Polyurethane glue is a high-grade adhesive, with excellent bonding strength, wide range of applications, great convenience, different degree of hardness, good wear resistance, the most important is its low temperature resistance. By adjusting the raw materials and formulations, it can design a variety of materials between the bonding or different uses of polyurethane adhesive.
1. high bonding strength
In the molecular chain of Polyurethane glue, NCO can react with a variety of active groups containing active hydrogen, in order to form the interface chemical bond. Polyurethane is available as a hot melt glue that sets and holds parts together without the need for clamping. Once the glue has cooled and set it continues to cure for several days to attain its full strength. Therefore, a variety of materials with very strong adhesion properties.
2. wide range of applications
Polyurethane glue can not only paste porous materials, such as foam, ceramics, wood, fabric, etc., but also glue a variety of metal, inorganic materials, plastics, rubber and leather. Therefore, polyurethane glue is a kind of widely used adhesives.
Polyurethane glue can be heated, cured,or room temperature curing. It's simple and quick to use.
4. with different hardness
Different proportion with different raw materials prepared polyurethane glue , you can get a series of different hardness of the adhesive, from soft to hard. It can glue different sticky objects.
5. good wear resistance
It’s suitable for wear-resistant plastic. There is a kind of turbine blade with wear-resistant adhesive, when the addition of polyurethane glue, the plastic indoor wear test life from the original half an hour to dozens of hours.
6. outstanding low temperature performance
At very low temperatures, the general polymer materials are converted to glassy and become brittle. However, the polyurthane glue can maintain a high peel strength even at - 250 ℃. As the temperature decreases, the shear strength increases significantly.