Description
Description
LORD® 7650 adhesive is a single-component, moisture-cure urethane adhesive designed to initially adhere similar to a contact adhesive, however permanently cross-link once cure develops.
LORD 7650 adhesive adheres to open cell polyethylene foam, styrofoam, urethane foam, plastic, fabric, rubber and prepared metal. Typical applications include gaskets, tank linings, automobile interiors, carpeting, construction panels and flooring.
Shelf Life
Shelf life is six months from date of shipment when stored in a clean, dry environment at 70-80°F (21-27°C) in original, unopened container.
After opening, protect adhesive from excessive exposure to moisture by installing desiccant cartridges and/or using dry nitrogen as an inert cover.
Features and Benefits
Easy to Use – provides high initial tack and green strength.
Durable – provides good impact resistance.
Versatile – bonds a wide variety of substrates.
Environmentally Resistant – provides good resistance to water and chemicals.
Convenient – requires no mixing; provides working time of 15-30 minutes; requires no ovens or other heat sources for curing.
Features and Benefits
Easy to use– provides high initial tack and green strength.
Durable – provides good impact resistance.
Versatile –bonds a wide variety of substrates
Environmentally Resistant – provides good resistance to water and chemicals
Convenient– requires no mixing; provides working time of 15-30 minutes; requires no ovens or other heat sources for curing.
Application
Surface Preparation –Surfaces should be free of grease, dirt and other contaminants. For plastics, clean the surface with a dry rag wipe or a rag dampened with solvent. For metals, prime or grit blast the surface, then solvent wash for optimum bond performance.
When bonding cured rubber, allow LORD 7701 adhesion enhancer/surface modifi er to fl ash off before applying LORD 7650 adhesive.
Applying –Apply LORD 7650 adhesive by roll coat, spray, brush or fl ow coat methods. Unlike contact adhesive, applying the adhesive to one side of the substrate is suffi cient.
Curing – Handling strength is achieved after a 15-30 minute solvent fl ash. Complete cure will take 1-5 days depending on substrate being bonded and relative humidity.
Typical Properties*
| Appearance | Honey Liquid |
| Viscosity, cP Brookfield LVT Spindle 2, 12 rpm |
400-2000 |
| Density, lb/gal (kg/m3) | 7.8-8.4 (935-1007) |
| Solids Content by Weight, % | 61-66 |
| Flash Point, °F (°C) Seta |
26 (3) |
| Solvents | Methyl Ethyl Ketone (MEK), Toluene |
| Work Time**, min | 15-30 |
| Time to Handling Strength**, hr | 24 |
| Cure Time**, days | 1-5 |
*Data is typical and not to be used for specification purposes.
**Can be accelerated with heat.
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