U3325 is a high viscosity UV-curable adhesive known for its excellent bonding properties on a wide range of plastics. Its strength and flexibility make it particularly suitable for bonding dissimilar substrates. The thixotropic viscosity ensures minimal migration, making it ideal for applications where precise placement is essential.

Chemical Family: Acrylics & Acrylates

Compatible Substrates & Surfaces: Plastics

Features: Good Flexibility, Good Strength, High Viscosity, Thixotropic, UV Curable

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Compatible Substrates & Surfaces
Product Application Instructions
  • Surfaces to be bonded should be clean and dry. Dispense a drop or drops to one surface only. Apply only enough to leave a thin film layer after compression. Press parts together and expose to UV dose when ready. An adequate bond should develop rapidly, depending on UV dose efficacy, and maximum strength is attained in 24 hours. Wipe off excess adhesive from the top of the container and recap. products, if left uncapped or exposed to sunlight, may deteriorate or cure prematurely.

Properties

Physical Form
Appearance
Light straw liquid
Cured Mechanical Properties
ValueUnitsTest Method / Conditions
Hardness86-Shore A, ASTM D2240
Hardness57-Shore D, ASTM D2240
Elongation to Break400%ASTM D638
Cured Properties
ValueUnitsTest Method / Conditions
Flash Pointmin. 95°C-
Set Time (at 395nm)max. 4sec-
Wavelength50mW/cm²-
Full Cure Time24hrs-
Storage Condition (in darkness)8 - 21°C-
Optimum Wavelength300 - 420nm-
Cured AppearanceColorless solid--
Specifications
ValueUnitsTest Method / Conditions
Specific Gravity1.06--
Rheological Properties
ValueUnitsTest Method / Conditions
Viscosity (at 20 - 25°C)3000 - 5000cPs-
Curing Properties
  • Photoinitiation initiates the curing process. Handling strength is reached in a short time, and will vary based on UV dose efficacy, environmental conditions, bond line gap, and other factors. Product will continue to cure for at least 24 hours before full strength and solvent resistance is developed.

Technical Details & Test Data

Graphical Information

Percent Strength Retained at Given Dosage

U3325 - Note - 1

Performance of Cured Adhesive

U3325 - Note - 1

Performance Range, by Substrate

U3325 - Note - 1

Packaging & Availability

Regional Availability
  • Global

Storage & Handling

Shelf Life
9 months (Cured)
Storage Information
  • Products should be stored unopened in a cool, dry place out of direct sunlight. Products should be kept at room temperature away from direct light. Protect from extreme heat or cold, do not refrigerate.