What are the main uses of polyurethane sealant?

Polyurethane sealant is a common sealing material, which is a polymer sealing material with polyurethane prepolymer as the core component. It solidifies through the polymerization reaction of isocyanates and polyols, forming a cross-linked structure. Polyurethane sealant plays an important role in multiple fields.

In the field of architecture, it can be used for sealing doors and windows, effectively blocking rainwater and dust from entering the interior, and also providing sound and heat insulation, improving the energy-saving performance of buildings; It is also suitable for sealing expansion joints and deformation joints in buildings, and can adapt to the expansion and contraction caused by temperature changes, structural deformation, etc., to prevent water leakage and structural damage.

In the field of transportation, it is used in automobile manufacturing to seal the gaps between windshields and body components, enhance the sealing and comfort of the car, and improve the waterproof and dustproof capabilities of the body; On rail transit vehicles, it is used for sealing parts such as compartments and windows to ensure driving safety and passenger riding experience.

In the industrial field, it can be used for sealing electronic devices, preventing dust, moisture, and other erosion of electronic components, and extending the service life of equipment; It can also be used for sealing pipelines and flange connections of mechanical equipment to prevent liquid or gas leakage.

In addition, polyurethane sealant can be used for sealing expansion joints in dams, water channels, etc. in hydraulic engineering to ensure the normal operation of hydraulic facilities.