Item Name: LOCTITE® AA 3345™ (Known as LOCTITE® 3345™)
Manufacturer: Henkel
Technologies: Acrylic, Urethane Methacrylate, One-component
Color: Clear, light straw colored liquid
Cure Type: Ultraviolet (UV) / Visible light
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.
LOCTITE® AA 3345™ is a one-component, UV-curing acrylic adhesive based on urethane methacrylate chemistry. It appears as a clear, light straw-colored liquid with medium viscosity and cures rapidly under ultraviolet light. The product is designed for high-speed bonding processes, offering strong adhesion between glass and metals. Notably, it is formulated for medical device assembly, with qualification under Henkel’s ISO 10993 protocol, ensuring compliance for biocompatibility and sterilization requirements.
Bonding glass to metal components.
Assembly of disposable and reusable medical devices.
Situations requiring resistance to sterilization methods (EtO, Gamma radiation, and limited steam autoclave cycles).
Industrial applications where UV-curing, medium viscosity, and durability are advantageous.
| Property | Condition | Value |
|---|---|---|
| Uncured Material | ||
| Specific Gravity @ 25 °C | — | 1.0 |
| Viscosity (Brookfield RVT, Spindle 3, 20 rpm, 25 °C) | — | 1,000–2,000 mPa·s |
| Appearance | — | Clear, light straw-colored liquid |
| Fluorescence | — | Negative |
| Curing Performance | ||
| Tack Free Time | 100 mW/cm² @ 365 nm | 20–60 s |
| Fixture Time (Glass) | 6 mW/cm² @ 365 nm | 20–60 s |
| 10 mW/cm² @ 365 nm | 15–25 s | |
| 100 mW/cm² @ 365 nm | 5–15 s | |
| Depth of Cure | 100 mW/cm² @ 365 nm | ≥2.5 mm |
| Cured Material | ||
| Shore Hardness (ISO 868, D) | — | 70 |
| Thermal Expansion (ISO 11359-2) | — | 100 ×10⁻⁶ K⁻¹ |
| Thermal Conductivity (ISO 8302) | — | 0.1 W/m·K |
| Tensile Strength (Steel–Glass, ISO 6922) | — | ≥7 N/mm² (≥1,015 psi) |
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