1. CharacteristicsPolyurethane automotive windshield sealant is a high-performance
adhesive product specifically designed for the bonding and sealing
of automotive windshields, suitable for both new car assembly lines
and windshield replacement scenarios in after-sales maintenance. It
operates stably across a wide range of extreme environmental
conditions, from the low temperatures of -40℃ in frigid regions to
the high temperatures of 120℃ in hot summers, and can resist the
erosion of rainwater, automobile exhaust, road salt, and
ultraviolet radiation for a long time without losing its sealing
and bonding properties. A key advantage of this sealant lies in its
excellent elastic recovery and high shear strength: it can
effectively absorb and buffer the vibration and impact generated
during vehicle operation, preventing the windshield from loosening
or cracking due to mechanical stress, while forming a permanent and
reliable bond with both the glass and the automotive body
(including metal and plastic substrates) to ensure the structural
integrity of the windshield. Additionally, it exhibits good
chemical compatibility, does not corrode the surface of the
windshield or the automotive paint, and complies with strict
automotive industry environmental and safety standards, making it
an indispensable core material for ensuring driving safety and
enhancing the durability of automotive components. 2. Features- Superior Bonding Strength: It has strong adhesion to various substrates such as glass,
steel, aluminum alloy, and modified plastics, forming a bond that
is even stronger than the glass itself in some cases, effectively
avoiding windshield detachment accidents.
- Excellent Elasticity and Flexibility: With a high elongation at break (usually more than 300%), it can
adapt to the thermal expansion and contraction of the windshield
and automotive body caused by temperature changes, maintaining a
tight seal at all times.
- Outstanding Weather Resistance: It has excellent resistance to UV aging, ozone, and chemical
media, and can maintain stable performance for more than 10 years
under outdoor exposure, avoiding problems such as hardening,
cracking, and water leakage.
- Rapid Curing Performance: It adopts a moisture-curing mechanism, which can cure quickly at
room temperature. The surface can be tack-free within 1-2 hours,
and it can reach the initial bonding strength in 24 hours, greatly
improving the efficiency of automobile assembly or maintenance.
- Easy Construction: It has a suitable viscosity, can be smoothly extruded through a
glue gun, and has good thixotropy, which can prevent sagging during
vertical construction and ensure a neat and uniform glue line.
3. Applications- New Energy Vehicle and Traditional Fuel Vehicle Assembly: It is widely used in the bonding and sealing of windshields
during the production of passenger cars, commercial vehicles, SUVs,
and pickup trucks, providing structural support and sealing
protection for the entire vehicle.
- Automotive Windshield After-sales Replacement: It is the core material for professional maintenance institutions
to replace damaged windshields, ensuring that the replaced
windshield has the same bonding strength and sealing performance as
the original factory.
- Sealing of Automotive Glass Accessories: It can be used for the bonding and sealing of small glass parts
such as automotive side windows, rear windows, and sunroofs,
especially for scenarios requiring high sealing performance (such
as waterproof and sound insulation).
- Special Vehicle Modification: It is applied in the glass installation and sealing of modified
vehicles (such as off-road vehicles, racing cars) and
special-purpose vehicles (such as ambulances, police cars),
adapting to the special use environment and performance
requirements of modified vehicles.
- Automotive Body Sealing Auxiliary: In addition to glass bonding, it can also be used for the sealing
of gaps between automotive body panels and glass, enhancing the
overall waterproof, dustproof, and sound insulation effects of the
vehicle.
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