Loctite AA 3494 Light Cure Adhesive

Loctite Aa 3494 Light Cure Adhesive 25ml

• Shear Strength : 2440
• Temperature : -75 - 175 °C
• Viscosity :  6000 mPa.s (cP) Brookfield
• Color : Clear
• Curing Type : Ultraviolet (UV)/ visible light
• Application : Bonding, Potting or Sealing

LOCTITE 3494 cures in seconds upon exposure to ultraviolet radiation of 365nm to form an impact resistant
bond which exhibits excellent resistance to prolonged humidity or water immersion.

Typical applications include bonding and sealing or potting applications of glass to itself or other materials, such as rough surface decorative glass, molded glass tableware items or automotive lighting components.

Tack free time >30 secs. Fixturing time is 8 secs. Shore hardness: D 65. Very high viscosity 6,000 mPa·s.

• High-speed cure on demand
• Very high viscosity
• 1-part system
• High transparency and low yellowing
• Tack free time >30 secs.
• Fixturing time 8 secs.
• Well suited to plastics, glass and metals
• Suitable for ceramics

LOCTITE® AA 3494™ cures in seconds upon exposure
to ultraviolet radiation of 365nm to form an impact resistant
bond which exhibits excellent resistance to prolonged humidity
or water immersion. Typical applications include bonding and
sealing or potting applications of glass to itself or other
materials, such as rough surface decorative glass, molded
glass tableware items or automotive lighting components.

TYPICAL CURING PERFORMANCE

LOCTITE® AA 3494™ can be cured by exposure to ultraviolet
and/or visible light of sufficient intensity. Surface cure is
enhanced by exposure to UV light in the 220 to 260 nm
range. Cure rate and ultimate depth of cure depend on light
intensity, spectral distribution of the light source, exposure time
and light transmittance of the substrate through which the light
must pass.

GENERAL INFORMATION

This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials.
For safe handling information on this product, consult the
Safety Data Sheet (SDS).

Directions for use:

1. This product is light sensitive; exposure to daylight, UV
   light and artificial lighting should be kept to a minimum
   during storage and handling.
2. The product should be dispensed from applicators with
   black feedlines.
3. For best performance bond surfaces should be clean and
   free from grease.
4. Cure rate is dependent on lamp intensity, distance from
   light source, depth of cure needed or bondline gap and
   light transmittance of the substrate through which the
   radiation must pass.
5. Recommended intensity for cure in an adhesive
   application (between substrates) is 40mW/cm² minimum
   (measured at the bondline) with an exposure time of 5-6
   times the fixture time at this same intensity.
6. For dry curing of exposed surfaces, higher intensity UV is
   required (100 mW/cm²).
7. Cooling should be provided for temperature sensitive
   substrates such as thermoplastics.
8. Plastic grades should be checked for risk of stress
   cracking when exposed to liquid adhesive.
9. Excess uncured adhesive can be wiped away with organic
   solvent (e.g. Acetone).
10. Bonds should be allowed to cool before subjecting to any
    service loads.

 

Loctite Material Specification

LMS dated March-4, 1998. Test reports for each batch are
available for the indicated properties. LMS test reports include
selected QC test parameters considered appropriate to
specifications for customer use. Additionally, comprehensive
controls are in place to assure product quality and
consistency. Special customer specification requirements may
be coordinated through Henkel Quality.

Storage

Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or
greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
Corporation cannot assume responsibility for product which
has been contaminated or stored under conditions other than
those previously indicated. If additional information is required,
please contact your local Technical Service Center or
Customer Service Representative.