Applications

LOCTITE® 4314™ – Adhesive – Bonding

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.

1. Product Overview

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.

2. Applications

  • Bonding flexible medical devices (catheters, tube sets)
  • Surface cure applications to reduce blooming
  • Bonding plastics, rubbers, TPEs, and metals
  • Rapid curing of exposed surface areas

3. Typical Properties

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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