MY Polymers

LM-155 : Optical Coating / Adhesive

LM-155 is a low modulus UV curable coating/adhesive. The material was optimized for curing by both UV LED and UV Mercury lamps.  A typical application is re-coating for optical fibers.

LM-155 is characterized by a plasto-elastic behavior. The non-elastic part is important for stress relief and better adhesion. Stress on the interface originates from the shrinkage during polymerization and is found in all polymerizing systems. LM-155 is made to accommodate the interfacial shrinkage effect.

 

Properties 

Liquid state
RI liquid at 589 nm 1.530
Density, g/cm3 1.12
Viscosity, cps @ 25°C 2500
Surface tension, dyne/cm 23
color Clear, yellowish
Cured state
color Clear, yellowish
Transparency 450-1600 nm, 300-micron film 99%
RI cured at 589 nm 1.550
RI cured at 1550 nm 1.540
Adhesion to silica, 90° Peel, g/cm 1200
Secant Modulus @2.5% 29
Young Modulus, MPa 50
Tensile Strength, MPa 8
Elongation to Break 130

The product is supplied pre-filtered to below 1-micron particles.

Storage

  1. Avoid unnecessary exposure to ambient light and moisture.
  2. Long term storage should be at ambient conditions of 15-30ºC. Do not refrigerate. The material may show haze below 10ºC. It will clear up upon warming back to ambient conditions.
  3. The shelf life is 12 months.

Application

Curing can be achieved by any UV source at 300-400nm. Typically, a dose of 500-2000 mJ/cm2 is necessary. Keep the bottle closed at all times when not in use. The material is sensitive to light.

Safety: Refer to the SDS

Note: The above information is believed to be reliable, but it is not to be taken as a representation, warranty, or guarantee. Customers should perform their own QC, QA, and evaluation tests.

 

Updated: August 22, 2024

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