• Item Name: LOCTITE® HHD 3619BK
• Manufacturer: Henkel
• Technologies: Polyurethane Hot Melt
• Color: Black
• Cure Type: Moisture and Solidification
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Contact to Techniq VN for details.
LOCTITE® HHD 3619BK is a black polyurethane reactive hotmelt adhesive formulated for structural and electronic bonding applications. It is odorless, 100% solids, and cures through moisture absorption and solidification. The adhesive develops high initial strength immediately after solidification, while offering excellent chemical and impact resistance. Additionally, it is engineered with improved anti-ESD breakdown performance, making it particularly suitable for sensitive electronic assemblies.
Structural bonding in electronic device assembly.
Situations requiring impact resistance and chemical durability.
Environments demanding anti-ESD protection for electronic components.
Can be dispensed via heating cartridge guns or syringe-type hotmelt equipment.
| Property | Value / Description | Condition / Notes |
|---|---|---|
| Uncured Material | ||
| Solids Content | 100% | – |
| Density | 1.1 g/cm³ | 25°C |
| Viscosity | 5,500 mPa·s | 110°C, Brookfield Thermosel, Spindle #27, 20 rpm |
| Odor | Odorless | – |
| Open Time | >3 min | 25°C, 1 mm bead |
| Preheating Schedule | 20–30 min | 100°C |
| Application Temp | 100–140°C | – |
| Cure Mechanism | Moisture + solidification | Handling strength instantly; full cure 1–5 days |
| Cured Material | ||
| Young’s Modulus | 52 N/mm² | – |
| Elongation at Break | 851% | – |
| Cross Tensile Strength | 9.0 N/mm² | PC/GF to Ink Glass |
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