Next Generation Structural Adhesives for Improved Processing Properties
- 2018-10-23 13:37:00
- LUQIMENG Original
- 1805
? Lightweight Design Potential
? Diversity in Bonding Technologies
? Why Structural Adhesives?
? Improvements in Body Shop Adhesives
Targeted CO 2 emissions for vehicle fleet
? Continuing specifications under elaboration
? Regulations differ significantly in dependence of the region
? The car body contributes ~35-40% of vehicle’s entire mass
? The vehicle mass contributes ~25% of fuel consumption
? Toughened Epoxy based structural adhesives for body shop application
? High elastic PU based structural adhesives for trim shop applications
? Elimination of stress concentration resulting in enhanced fatigue and durability
? Increase in load transfer efficiency
? Reduction of sheet metal thickness
? Reduction of spot welds
? >300 % increase in joint strength at failure
? >300 % increase in displacement at failure
? High ductility at a broad range of temperatures
New Specialty Toughening Technology
? Increased adhesive modulus
? Maintains high fracture toughness
? Significant increase in fatigue durability
? Consistent fatigue failure mode
The global manufacturing and the shipment of closure panels and entire bodies requires adhesives which offer improved humidity resistance.
? Improved adhesive hydrophobicity by new components improves open time storage
? Innovative catalysis offers excellent bulk viscosity stability
? Consistent lap shear strength when cured at a broad range of temperatures
? Consistent performance on a variety of steel grades
? Good impact strength when cured at a broad range of temperatures
? Good T-Peel strength at all bond line thicknesses
New Technology
? Improved wash-off resistance while maintaining pumpability
? Typical storage stability >6 months at room temperature
? Optimized rheology for superior wash-off resistance
? Wash-off tests on lubricant treated HDG steel
? New Toughening Technology
? Offers significant improvements in tensile modulus without affecting the adhesive ductility
? Will provide improved stiffness/NVH and enable OEMs to downgauge high strength steels
? Improved vehicle longevity through improvements of
? Fatigue durability
? Environmental resistance
? Greener manufacturing processes offered without sacrificing performance
? Improved wash-off performance without sacrificing cold-pumpability through robotic applicators
