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Beep 621 heat curing one part epoxy structural 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.
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. 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.
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ITEM |
Test method or condition | Test results | |
|
621 |
|||
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Before curing |
Appearance | Visual |
Black slurry |
|
Viscosity |
4#Rotor, 10rpm，Pa·s, 25℃ |
120 |
|
|
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 |
|
|
Linear expansion coefficient |
ppm |
45，<Tg 100, >Tg |
|
|
Volume resistivity |
Ω· cm, DC500V |
1.0×1015 |
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It is widely used in automotive electronics, pressure sensors, connecting wire harnesses, and motor magnetic sheet bonding.
Use process
If the epoxy adhesive is stored in a frozen environment, it should be removed and defrosted at room temperature before use. During use, the glue should be avoided in a high temperature environment to reduce the consistency of the glue, unless it has been tested in this area and confirmed to be feasible.
Apply the adhesive directly to the surface of the object to be bonded after oil removal, rust removal and coarsening treatment. Select appropriate tools to assist the adhesive coating and fix it with fixtures. Then solidify according to the recommended heating conditions.
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