• Item Name: LOCTITE® 4314™
• Manufacturer: Henkel
• Technologies: Cyanoacrylate (Ethyl cyanoacrylate with photoinitiator)
• Color: Transparent Light Yellow Green to Dark Blue Green Liquid
• Cure Type: Ultraviolet (UV) / Visible light; Secondary Cure: Humidity
• Package Size: Contact to Techniq VN for details.
• Shelf Life: Contact to Techniq VN for details.
LOCTITE® 4314™ is a low-viscosity, UV/visible light-curing cyanoacrylate adhesive with a secondary humidity cure. It offers rapid fixturing, surface curing, and flexibility, making it suitable for medical devices (ISO 10993 compliant). It bonds plastics, rubbers, TPEs, and metals efficiently.
| Property | Value |
|---|---|
| Uncured Properties | |
| Appearance | Transparent Light Yellow Green to Dark Blue Green Liquid |
| Viscosity (mPa·s) | 100 – 250 |
| Specific Gravity @ 25°C | 1.07 |
| Stress Cracking Resistance | >1,440 min (6.9 N/mm² stress) |
| Curing Properties | Value |
|---|---|
| Tack-Free Time (UV, 365nm, 30mW/cm²) | ≤10 sec |
| Tack-Free Time (UV, 365nm, 1,000mW/cm²) | ≤1 sec |
| Fixture Time on Aluminum | 60 – 120 sec |
| Fixture Time on Polycarbonate | 10 – 20 sec |
| Fixture Time on Mild Steel | 300 – 360 sec |
| Cured Properties | Value |
|---|---|
| Glass Transition Temperature (Tg) | 70°C |
| Shore Hardness (D) | 74 |
| Elongation at Break | 17% |
| Tensile Strength | 25 N/mm² (3,600 psi) |
| Dielectric Breakdown Strength | 35 kV/mm |
| Adhesive Strength (Block Shear, ISO 13445) | Value |
|---|---|
| Polycarbonate to Polycarbonate | 22 N/mm² (2,050 psi) |
| Acrylic to Acrylic | 7.3 N/mm² (1,060 psi) |
| Polycarbonate to Steel | 4 N/mm² (580 psi) |
| HDPE (with Primer SF 7701) | 0.9 N/mm² (130 psi) |
| LDPE (with Primer SF 7701) | 2.8 N/mm² (410 psi) |
| Environmental Resistance | % Strength Retention |
|---|---|
| 1000h in 22°C Water | 114% |
| 1000h in 90% RH @ 40°C | 156% |
| 1000h in Heptane | 132% |
| 1000h in IPA | 159% |
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