EPOCAST® 88103 A/B

EPOCAST® 88103-A/B casting system is a two-component material that cures at a low temperature. It is formulated to yield a cured polymer with good mechanical, optical, and electrical properties. EPOCAST® 88103-A/B casting system is formulated specifically for the encapsulation of light-emitting diodes. The product is suitable for use in applications that require the environmental protection properties of an epoxy combined with high-efficiency visible light transmission. EPOCAST® 88103-A/B casting system is also widely used as an optical electronic packaging (encapsulant) material.

RTU Product Type: Casting Resin, Encapsulating Resin System

Product End Uses: Light Emitting Diode (LED)

Chemical Family: Epoxy & Epoxy Derivatives

Composites Processing Methods: Casting, Encapsulation

Features: Good Electrical Properties, Good Mechanical Properties, Good Non-Yellowing Properties, Good Optical Properties, Long Potlife, Low Temperature Curing

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Enhanced TDS

Identification & Functionality

Chemical Family
Epoxy & Epoxy Derivatives
RTU Product Type
Casting Resin,
Encapsulating Resin System
Technologies
Composite Materials
Product Families
Composite Materials — Resin Systems
Casting,
Encapsulating

Features & Benefits

Ready-to-Use Product Features
Good Electrical Properties,
Good Mechanical Properties,
Good Non-Yellowing Properties,
Good Optical Properties,
Long Potlife,
Low Temperature Curing
Product Advantages
  • Non-yellowing
  • High clarity after long-term exposure at temperatures up to 100°C (212°F)
  • Cures at a low temperature, permitting the use of polypropylene mold cups and extending mold cup life in discrete lamp production
  • Long pot life
  • Dies do not attack polycarbonate, allowing it to be used as a substrate
  • Easy to de-air

Applications & Uses

Composites Processing Methods
Casting,
Encapsulation
Product End Uses
Light Emitting Diode (LED)

Technical Details & Test Data

Typical Cured Properties

Typical Cured Properties

Property Value Unit Test Method At Condition
Shrinkage 0.33 % ERF 12-69  
Glass Transition Temperature 145 °C

ASTM D-696, Thermomechanical Analysis

  
Coefficient of Thermal Expansion 66 ppm/°C ASTM D-696, Thermomechanical Analysis Alpha 1
CTE 170 ppm/°C ASTM D-696, Thermomechanical Analysis Alpha 2
Hardness 89 Shore D ASTM D-2240  
Typical Optical Properties

Typical Optical Properties
 

Property Test Value
Index of Refraction, Mixed Wet 1.55
Typical Electrical Properties

Typical Electrical Properties

Property Value Unit Test Method At Condition
Dielectric constant 3.1   ASTM D-150 1 KHz
Dissipation factor 0.025   ASTM D-150 1 KHz
Volume resistivity 7.6 x 10¹⁵ Ω·cm ASTM D-257 at 25°C (77°F)
Volume resistivity 8.0 x 10¹⁵ Ω·cm ASTM D-257

at 100°C (212°F)

Safety & Health

Safety Precautions
  • First aid
  • Keep out of reach of children
  • For professional and industrial use only

Packaging & Availability

Regional Availability
  • Americas

Storage & Handling

Storage Conditions

EPOCAST® 88103-A/B should be stored in a dry place and in the sealed original container, at temperatures between 18°C and 40°C (64°F and 104°F). Under these storage conditions the shelf life is 1 year. The product should not be exposed to direct sunlight.

Storage Information
  • Epocast® 88103 A/B should be stored in a dry place and in the sealed original container, at temperatures between 18°C and 40°C (64°F and 104°F).
  • Under these storage conditions the shelf life is 1 year.
  • The product should not be exposed to direct sunlight.

Other

Physical Properties
ValueUnitsTest Method / Conditions
Gel Time5.0 mmat 121°C, 10g
Viscosity1050.0 cPscPsASTM D2393 at 25°C, RVT spindle 2/20 rpm, Initial
Application Information
ValueUnitsTest Method / Conditions
Curing Time3.0 hrhrat 83°C, display