LORD 7450
Harmonization Code : 3506.10.00.00 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg
Main features
- Cryogenic Flexible Bonding
- Multifunction Adhesive and Sealant
- Room-Temperature or Accelerated Cure
Product Description
LORD 7450 Urethane Adhesive is a two-component urethane adhesive system that forms strong, flexible bonds and can also be used as a sealant or protective coating. A 100:16 mix ratio by weight combines LORD 7450-A resin with heated LORD 7450-B hardener, producing approximately one hour of working life and an eight-hour gel time at 75 deg F (24 deg C). The cured elastomeric system is intended for cryogenic environments and has a service-temperature range of -423 deg F to 180 deg F (-253 deg C to 82 deg C). It is used for dissimilar-material bonding, gasket formation, opening repair, and protective surface coating.
Key features
- Cryogenic temperature capability: Performs from -423 deg F to 180 deg F (-253 deg C to 82 deg C) for low-temperature service.
- Flexible multifunction system: Forms strong, flexible bonds and also functions as a sealant or protective coating.
- Multiple cure options: Cures for 72 hours at 74 deg F (24 deg C), while elevated-temperature schedules shorten the cure.
Applications
Applications include aerospace, liquefied-gas production, food-processing equipment, bonding aluminum, stainless steel, glass, thermoplastics and reinforced laminates, gasket formation, and repair of openings.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
Typical values are identified for LORD 7450-A resin, LORD 7450-B hardener, or mixed material.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio | 100:16 | parts by weight | LORD 7450-A resin to LORD 7450-B hardener |
| 7450-A viscosity | 21,000 to 31,000 | cP | Typical; resin component |
| Mixed viscosity | 17,000 | cP | Typical; mixed material |
| Working life | Approximately 1 | hour | Typical; mixed material |
| Gel time | 8 | hours | Typical; mixed material at 75 deg F (24 deg C) |
| Shelf life | 6 | months | Each component; original unopened container at 77 deg F (25 deg C) |
After-processing / final-state properties
Typical properties apply to cured LORD 7450 adhesive under the stated test conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Coefficient of linear thermal expansion | 133.2 | ppm/deg C | Typical; cured material |
| Hardness | 85 | Shore A | Typical; cured material |
| Tensile shear strength | 7000 (48.3) | psi (MPa) | Typical; tested at -423 deg F (-253 deg C) |
| Tensile shear strength | 2200 (15.2) | psi (MPa) | Typical; tested at room temperature |
| Tensile shear strength | 600 (4.14) | psi (MPa) | Typical; tested at 180 deg F (82 deg C) |
| Elongation at break | 1.2 | % | Typical; tested at -320 deg F (-195 deg C) |
