LOCTITE AA 3201

Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.

LOCTITE 3201

Main features

  • Rapid Light-Cure Fixture Development
  • Thixotropic Placement Control
  • Flexible Transparent Polycarbonate Bonding

Product Description

LOCTITE AA 3201 combines one-part acrylated urethane chemistry with medium, thixotropic flow for rapid UV or visible-light bonding. It forms flexible, transparent bonds and is primarily intended for polycarbonate-to-polycarbonate assemblies. The thixotropic rheology reduces liquid migration after dispensing, while light exposure can develop fixture strength in 5 to 20 seconds under the listed lamp and substrate conditions. Typical uncured viscosity is 2,500 to 5,000 mPa s at 25 deg C. Applications include bonding polycarbonate and other light-transmitting plastic assemblies, with additional adhesion data available for glass and metal substrates.

Key features

  • Rapid Light Fixture: Fixture strength develops in 5 to 20 seconds under the specified light-source and substrate conditions.
  • Thixotropic Placement Control: Thixotropic rheology reduces migration of the liquid adhesive after application.
  • Flexible Transparent Bonds: UV or visible-light cure forms flexible, transparent bonds for supported polycarbonate assemblies.

Applications

Polycarbonate-to-polycarbonate bonding and other supported plastic, glass, and metal assemblies where light reaches the bond area.

Product Family

LOCTITE AA 3201

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Transparent to slightly hazy liquid
Chemistry Type
Acrylated urethane
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
2,500 to 5,000 mPa.s
Other Properties
Storage Temperature
8°C to 21 °C
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.
265 %
Chemical Properties
Water Absorption
2.61 %
Electrical Properties
Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
8.7×10¹⁴ Ohms⋅cm

Additional Information

Technical properties

As-supplied / before-processing properties

PropertyValueUnitMethod / condition
AppearanceTransparent to slightly hazy liquidUncured; typical
Specific gravity1.13DimensionlessTypical at 25 deg C
Refractive index1.48DimensionlessUncured; typical
Viscosity2,500 to 5,000mPa sLMS; Brookfield RVT, spindle 4, 20 rpm, 25 deg C
Technical properties

After-processing / final-state properties

Cured-material values use the listed light-cure conditions; row-specific methods and bond geometry remain explicit.

PropertyValueUnitMethod / condition
Shore hardness59Shore DISO 868; cured at 30 mW/cm^2, 365 nm, for 80 seconds
Refractive index1.5DimensionlessCured material; typical
Water absorption2.61%ISO 62; 2 hours in boiling water
Elongation at break265%ISO 527-3; typical
Tensile strength at break18N/mm^2ISO 527-3; typical
Tensile modulus297N/mm^2ISO 527-3; typical
Lap shear strength11.7N/mm^2ISO 4587; polycarbonate; 0.5 mm gap; 30 mW/cm^2 at 365 nm for 80 seconds

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