By One-component epoxy adhesive
Beep 621 is a black, solvent-free, one-component epoxy structural adhesive, This product has good toughness and impact strength, When it is fully cured by heat, it provides excellent bonding properties, electrical properties, moisture resistance and mechanical properties.
Product description
It has high bonding strength to most substrates including glass, metal, ceramics, etc. At the same time, it can meet the bonding and mechanical performance requirements under high temperature, and is widely used in automotive electronics, pressure sensors, connecting wire harnesses, and motor magnetic sheet bonding.
300cc/tube； 30ml/tube
| ITEM | Test method or condition | Test results | |
| 621 | |||
| Before curing | Appearance | Visual | Black slurry |
| Viscosity | 93C #Rotor, 5rpm，Pa·s, 25℃ | 112 | |
| Viscosity | 93C #Rotor, 0.5rpm，Pa·s, 25℃ | 278 | |
| Thixotropic index | – | 2.5 | |
| Density | g/cm3, 25℃ | 1.25-1.35 | |
| After curing | Hardness | Shore-D, 25℃ | 85 |
| Glass transition temperature Tg | DSC, ℃ | 145 | |
| Long-term temperature resistance range | ℃ | –50-180 | |
|
Shear strength, steel-steel |
MPa, 25℃ | 27 | |
| MPa, 120℃ | 24 | ||
| MPa, 150℃ | 19 | ||
|
Shear strength, galvanized sheet |
MPa, 25℃ | 18 | |
| MPa, 120℃ | 17 | ||
| MPa, 150℃ | 13 | ||
| Impact strength | KJ/m2，25℃ | >6 | |
| Linear expansion coefficient | ppm | 45，<Tg
100, >Tg |
|
| Volume resistivity | Ω· cm, DC500V | 1.0×1015 | |