LOCTITE AA 3494

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

LOCTITE AA 3494

Main features

  • UV/Visible-Light Adhesive Cure
  • 10-Second or Faster Fixture
  • Electrically Insulating Acrylic Adhesive

Product Description

LOCTITE® AA 3494™ is a one-component, UV and visible light curing modified acrylic adhesive designed for bonding, sealing and potting applications. The transparent adhesive cures within seconds upon exposure to suitable ultraviolet light, producing tough, impact-resistant bonds with excellent resistance to humidity, water immersion and environmental aging. It is particularly well suited for glass bonding applications, including decorative glass assemblies, molded glass products and automotive lighting components where optical clarity and rapid production throughput are required.

Key Features & Benefits

  • UV and visible light curing acrylic adhesive.
  • Fast fixture and cure speeds for high-volume production.
  • Excellent adhesion to glass and dissimilar substrates.
  • Transparent cured appearance with refractive index close to glass.
  • High resistance to humidity, water immersion and environmental exposure.
  • Suitable for bonding, sealing and potting applications.
  • One-component formulation requiring no mixing.

Recommended Applications

  • Glass-to-glass bonding assemblies.
  • Decorative and molded glass products.
  • Automotive lighting component assembly.
  • Glass-to-metal and glass-to-plastic bonding.
  • UV-curable sealing and potting applications.
Product Family

LOCTITE AA 3494

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Transparent liquid
Refractive index
The refractive index determines how much the path of light is bent, or refracted, when entering a material. It is calculated by taking into account the velocity of light in vacuum compared to the velocity of light in the material. The refractive index calculation can be affected by the wavelength of light and the temperature of the material. Even though it is usually reported on standard wavelengths it is advised to check the TDS for the precise test parameters.
1.48
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.02
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
5000 - 7000 mPa.s

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Property Value Unit Condition
Technology Modified Acrylic — UV / Visible Light Cure
Appearance Transparent Liquid — Uncured
Components One Part — No Mixing Required
Specific Gravity 1.02 — 25°C
Density 1.024 g/cm³ 20°C
Refractive Index 1.48 — Uncured Material
Viscosity 5,000 - 7,000 mPa·s Brookfield RVT, 25°C
Fixture Time ≤10 seconds 365 nm UV, 6 mW/cm²
Technical Properties

After-Processing / Final-State Properties

Property Value Unit Condition / Method
Glass Transition Temperature (Tg) 31 °C ISO 11357-2
Shore Hardness 65 Shore D ISO 868
Tensile Strength 22.5 N/mm² ISO 527-3
Tensile Modulus 520 N/mm² ISO 527-3
Water Absorption 4.08 % 2 h Boiling Water, ISO 62
Volume Resistivity 3.3 × 10¹⁵ Ω·cm IEC 60093
Surface Resistivity 3.0 × 10¹⁵ Ω IEC 60093
Dielectric Breakdown Strength 32.3 kV/mm IEC 60250
Block Shear Strength (Steel to Glass) 16.8 N/mm² ISO 13445
VOC Content <5.0 % 2010/75/EC

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