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EC 3549 B/A is a two component, polyurethane adhesive which cures at room temperature or with heat to form tough, impact-resistant structural bonds. |
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| The product has a long work life. |
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| It provides excellent adhesion to many primed or painted metal and plastics substrates and is designed to develop sag resistance approximately 30 seconds after mixing. |
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EC 3549 B/A provides flexible bonds or many plastics and rubber. |
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| 3M brand primer EC 1945 B/A is suggested for use on metal surfaces to achieve maximum resistance to water, humidity and salt spray. |
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| For best results it is also suggested that the primer itself or primer/adhesive system is heat cured. |
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| Type |
Description |
| Colour |
Off-white (B), Brown (A) |
| Kind of chemistry |
Polyol (B), Isocyanate (A) |
| Mix ratio |
100 by wt. (B) : 104 by wt. (A), 100 by vol. (B) : 100 by vol. (A) |
| Pot life |
60 mins |
| Viscosity |
10,000-40,000 cps (B) 15,000-40,000 cps (A) |
| Brookfield viscometer |
RVF 6 sp. @ 10 rpm (B)
RVF 5 sp. @ 10 rpm (A) |
| Average T-peel |
25 piw (43.8 N/cm) 24°C (75°F) |
| Overlap shear strength |
2000 psi (13.8 MPa) 24 °C (75°F)
300 psi (2.1 MPa) 82 °C (180°F) |
| Service temperature range |
-40°C to +80°C (-104°F to +176°F) |
| Handling strength |
2-4 hours |
| Bonding range |
7 days (24°C / 75°F) |
| Application methods |
Spatula, trowel, flow equipment |
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