Applications

LOCTITE ECCOBOND LUX A4083T – Photocurable Adhesive

• Item Name: LOCTITE ECCOBOND LUX A4083T
• Manufacturer: Henkel
• Technologies: Acrylate
• Color: Clear Pale Yellow
• Cure Type: Ultraviolet (UV) light, Visible light, and Heat cure
• Package Size: Contact to Avantek for details.
• Shelf Life: 3 to 6 months

1. Product Overview

LOCTITE ECCOBOND LUX A4083T is a one-component, photocurable adhesive designed for optical, fiber optic, and optoelectronic device assembly. It cures with ultraviolet (UV) light, visible light, and heat and provides excellent adhesion to materials like glass and stainless steel. The adhesive is formulated to enhance productivity and contains a secondary thermal cure initiator for shadowed areas.

2. Applications

  • Connection terminations
  • General bonding applications
  • Assembly of optical, fiber optic, and optoelectronic devices

3. Typical Properties

Uncured Properties

Property Value
Technology Acrylate
Color Clear Pale Yellow
Viscosity (Brookfield SP #27, 25°C) 300 mPa·s (cP)
Shelf Life @ 25°C 91 days
Shelf Life @ 0 to 5°C 183 days

Curing Conditions

Cure Type Conditions
UV Light Cure UV Wavelength: 365 nm
Light Intensity: 50 mW/cm²
Visible Light Cure Wavelength: 470 nm
Light Intensity: 100 mW/cm²
Thermal Cure 1 hour @ 100°C
2 hours @ 80°C

Cured Properties

Property Value
Glass Transition Temperature (Tg) 104°C
Linear Shrinkage on Cure 2.3%
Hardness Shore D 70
Coefficient of Thermal Expansion (Below Tg) 170 ppm/°C
Coefficient of Thermal Expansion (Above Tg) 450 ppm/°C
Refractive Index @ 589 nm 1.506
Refractive Index @ 830 nm 1.499
Refractive Index @ 1,320 nm 1.493
Refractive Index @ 1,550 nm 1.488
Flexural Modulus 250.07 N/mm² (36,260 psi)
Moisture Absorption – Intrinsic Loss dB cm⁻¹ @ 830 nm <1.7
Moisture Absorption – Intrinsic Loss dB cm⁻¹ @ 1,320 nm <1.0
Moisture Absorption – Intrinsic Loss dB cm⁻¹ @ 1,550 nm <1.6

Lap Shear Strength @ 25°C (Glass to Glass)

Property Value
Lap Shear Strength (N/mm²) 16 N/mm²
Lap Shear Strength (psi) 2,320 psi

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