LOCTITE 3104

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 3104

Main features

  • UV/Visible-Light Adhesive Cure
  • Direct PVC-to-Polycarbonate Bonding
  • Low-Viscosity Adhesive Application

Product Description

LOCTITE® AA 3104™ is a one-component UV and visible light-curing acrylic adhesive designed primarily for bonding rigid or flexible PVC to polycarbonate. The transparent liquid formulation cures rapidly upon exposure to ultraviolet or visible light, enabling high-speed manufacturing processes and efficient assembly operations. Its low-viscosity characteristics allow easy application in close-fitting assemblies, while the cured adhesive provides flexibility that enhances load-bearing and shock-absorbing performance. LOCTITE AA 3104 demonstrates excellent adhesion to a broad range of substrates including polycarbonate, PVC, glass, many plastics and most metals.

Key Features & Benefits

  • UV and visible light-curing adhesive for rapid production processing.
  • Specifically developed for bonding PVC to polycarbonate.
  • Transparent formulation for aesthetically clean bond lines.
  • Low-viscosity adhesive supports easy dispensing and wetting.
  • Flexible cured bond enhances shock absorption and load distribution.
  • One-component system requiring no mixing.
  • Excellent adhesion to plastics, glass and metal substrates.

Recommended Applications

  • Polycarbonate-to-PVC bonding.
  • Joining flexible PVC tubing to polycarbonate components.
  • Transparent plastic assembly applications.
  • Glass-to-plastic and plastic-to-metal bonding.
  • High-speed manufacturing processes utilizing UV curing systems.
Product Family

LOCTITE 3104

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
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.
1.13
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
90 - 210 mPa.s
Mechanical Properties
Elongation
Elongation is the process of lengthening something. It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks. It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
50 %

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Property Value Unit Condition
Technology Acrylic — UV / Visible Light Cure
Chemical Type Acrylated Urethane — One-component adhesive
Appearance Transparent Liquid — Uncured
Components One Component — No mixing required
Viscosity 90 - 210 mPa·s (cP) Brookfield RVT, 25°C
Specific Gravity 1.13 — 25°C
Refractive Index 1.48 — ASTM D542
Fixture Time <5 to 15 seconds Depending on light source and intensity
Technical Properties

After-Processing / Final-State Properties

Property Value Unit Condition / Method
Tensile Strength at Break 19 N/mm² ISO 527-3
Tensile Modulus 738 N/mm² ISO 527-3
Elongation at Break 50 % ISO 527-3
Shore Hardness 69 Shore D ISO 868
Refractive Index 1.51 — ASTM D542
Lap Shear Strength (Polycarbonate to PVC) 9.78 N/mm² Initial strength
Lap Shear Strength (Polycarbonate to Polycarbonate) 21.8 N/mm² Initial strength
Dielectric Breakdown Strength 34 kV/mm IEC 60243-1
Volume Resistivity 0.92 × 10¹⁵ Ω·cm IEC 60093

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