• Item Name: LOCTITE® HHD 3628BK
• 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 3628BK is a black polyurethane reactive hotmelt adhesive designed for structural and electronic bonding applications. It is odorless, 100% solids, and cures by moisture absorption and solidification. The adhesive exhibits high initial strength immediately after solidification, ensuring quick handling capability. It further provides excellent reworkability, strong impact resistance, and chemical resistance, making it suitable for demanding assembly processes. The product is optimized with an open time >4 minutes, ideal for both manual and automated assembly lines.
Structural adhesive for assemblies requiring chemical and mechanical durability.
Electronic device structural bonding where impact resistance and reworkability are valued.
Compatible with substrates such as PC/GF and ink-coated glass.
Dispensing options: cartridge gun or syringe-type hotmelt equipment.
| Property | Value / Description | Condition / Notes |
|---|---|---|
| Uncured Material | ||
| Solids Content | 100% | – |
| Density | 1.1 g/cm³ | 25°C |
| Viscosity | 9,000 mPa·s | 110°C, Brookfield Thermosel, Spindle #27, 20 rpm |
| Odor | Odorless | – |
| Open Time | >4 min | 25°C, 1 mm bead |
| Preheating Schedule | 20–30 min | 100°C |
| Application Temp | 100–130°C | – |
| Cure Mechanism | Moisture + solidification | Handling strength instantly; full cure 1–5 days |
| Cured Material | ||
| Young’s Modulus | 60 N/mm² | – |
| Elongation at Break | 865% | – |
| Tensile Strength | 16.2 N/mm² | 25°C |
| Cross Tensile Strength | >8.0 N/mm² | PC/GF to ink glass |
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