OLS-1557 | Liquid Encapsulant - Two part Epoxy

Harmonization Code : 3907.30.00.90 |   Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms : Epoxide resins : Other
Main features
  • Low viscosity
  • Good workability
  • High temperature resistance

Product Description

OPTOLINQ OLS-1557 is an optically clear, two-part, and heat-curable epoxy resin. OLS-1557 AB mixture has low viscosity and good workability after mixing. When fully cured, the product demonstrates minimal mold shrinkage, high toughness, high-temperature resistance, good adhesion on different surfaces, and excellent electrical properties, making OLS-1557 an ideal material for the encapsulation of optoelectronic devices. 

 

Product Family
OLS-1557  
5 kg
Part A Part B

Catalog Product

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Packaging
TDS, SDS & Technical documents

Technical Specifications

General Properties
Work life @25°C
Work life @25°C
Work life is the amount of time we have to work with a material until it is no longer able to be easily worked and applied on a substrate.

It is based on the change in viscosity and it can rely on the application requirements.
 4 hours
Chemical Properties
Water Absorption 0.3 %
Thermal Properties
Coefficient of Thermal Expansion (CTE)
Coefficient of Thermal Expansion (CTE)
CTE (Coefficient of thermal expansion) is a material property that is indicative of the extent to which a material expands with a change in temperature. This can be a change in length, area or volume, depending on the material.

Knowing the CTE of the layers is helpful in analyzing stresses that might occur when a
system consists of an adhesive plus some other solid component.
Coefficient of Thermal Expansion (CTE), α1
Coefficient of Thermal Expansion (CTE), α1
CTE α1 (alpha 1) is the slope of the Coefficient of thermal expansion in a temperature range below the Glass transition temperature (Tg).

It explains how much a material will expand until it reaches Tg.
 40 ppm/°C
Glass Transition Temperature (Tg)
Glass Transition Temperature (Tg)
The glass transition temperature for organic adhesives is a temperature region where the polymers change from glassy and brittle to soft and rubbery. Increasing the temperature further continues the softening process as the viscosity drops too. Temperatures between the glass transition temperature and below the decomposition point of the adhesive are the best region for bonding.

The glass-transition temperature Tg of a material characterizes the range of temperatures over which this glass transition occurs.
 81–91 °C

Additional Information

Processing Instructions

  • Mix component A and B, stir uniformly, and degas under vacuum. 
  • Recommended molding curing conditions: Mold at 150 °C for 5 minutes and post-mold cure at 130–135 °C for 6–8 hours. Identify the specific curing settings based on your product requirements.

Using Additives

Optolinq OLS-1557 can be mixed with diffusing agents or color pastes to achieve customer-specific purposes.

Recommended quantity of various diffusing agents and color pastes:

  • OPC-R Red Color Paste: 0.1-0.5% by epoxy weight
  • OPC-B Blue Color Paste: 0.1-0.5% by epoxy weight
  • OPC-G Green Color Paste: 0.1-0.5% by epoxy weight
  • ODF-090 Diffusing Agent: 3-5% by weight (LED lamps), 4-8% (LED displays)

Storage and Handling

Store in a ventilated, dry, and clean environment below 30 °C and  70% RH. Keep away from fire and heat sources. It is strictly forbidden to store in outdoor environments. At proper storage conditions, Part A has a shelf life of 6 months and Part B a shelf life of 3 months. Shelf life can be extended by using cold storage.