Description
LORD 320/322 adhesive is a general purpose, two-component epoxy adhesive system formulated for primerless adhesion to automotive sheet molded compounds (SMC).
This adhesive system also provides excellent adhesion to prepared metals, rubber, fiberglass reinforced plastics (FRP), polyester thermosets and thermoplastics, and many other materials. LORD 320/322 adhesive can be either room temperature cured or heat cured for faster processing.
If bonding with cured rubber, treat the rubber surface with Lord 7701 adhesion enhancer to strengthen the rubber-side of the bond. This adhesive system also bonds metals and plastics, both thermosets and thermoplastics.
Shelf Life
Shelf life is two years from date of manufacture when stored at 60-80F (16-27C) in original, unopened container.
Features and Benefits
Durable – provides load bearing properties equal to or greater than the materials being bonded; provides impact resistance down to -40F (-40C) and extreme durability through superior inhibition of crack propagation.
Set time is 20-40 min
Environmentally Recommended – contains no solvent, nonflammable and virtually odorless.
Environmentally Resistant – resists humidity, sunlight, salt spray and temperature extremes.
High Temperature Resistant – resists postbakes up to 400F (204C).
Chemically Resistant – solvent resistant when cured; anti-corrosion processes including phosphatizing and ELPO (e-coat) coatings do not affect the adhesive or its bond strength. Continuous immersion in solvents is not recommended.
Typical Properties*
| Work Time, min @ 75F (24C), 54 g mass | 20-40 |
| Time to Handling Strength**, hr | 2-4 |
| Cure Time**, hr | 24 |
| Mixed Appearance | Grey Paste |
| Mixed Solids Content by Weight, % | 100 |
LORD 320 Resin – Typical Properties*
| Appearance | Off-white Paste |
| Viscosity, cP @ 77F (25C) Brookfield HBF Helipath, 5 rpm T-Bar Spindle D |
300,000 – 1,000,000 |
| Density, lb/gal (kg/m3) | 12.5 – 12.9 (1498 – 1546) |
| Flash Point, F (C) Closed Cup |
>200 (>93) |
LORD 322 Hardener – Typical Properties*
| Appearance | Grey Paste |
| Viscosity, cP @ 77F (25C) Brookfield HBF Helipath, 5 rpm T-Bar Spindle E |
450,000 – 2,000,000 |
| Density, lb/gal (kg/m3) | 10.33 – 10.54 (1238 – 1263) |
| Flash Point, F (C) Closed Cup |
>200 (>93) |
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