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LOCTITE STYCAST 3103 BIPAX

  • Item Name: LOCTITE STYCAST 3103 BIPAX
  • Manufacturer: Henkel
  • Product category: Potting/Encapsulation Adhesive (Epoxy Casting Compound)
  • Technologies: Epoxy
  • Applications: Ideal for potting and encapsulation applications requiring robust mechanical, thermal, and electrical insulation.
  • Color: Black
  • Cure type: Room temperature cure or Heat cure
  • Package size: Contact to Avantek for details
  • Shelf life: Contact to Avantek for details

1. Product Overview

LOCTITE STYCAST 3103 BIPAX is a black, two-part epoxy potting and encapsulation compound with excellent mechanical, thermal, and electrical insulating properties. It offers:

  • Low viscosity for easy mixing and processing
  • Room temperature or heat cure options
  • High thermal shock and impact resistance
  • Good environmental and chemical resistance
  • Minimal shrinkage during curing
  • Compliance with cytotoxicity testing (ISO 10993-5) and NASA outgassing standards

2. Applications

  • Potting and encapsulation of electronic components
  • Adhesion to glass, ceramics, most metals, potting shells, and other plastics

3. Typical Properties

Uncured Material
Property Value
Mix Ratio (by weight) 100:10.5 (Resin: Hardener)
Mixed Viscosity @ 25°C 4,000 mPa·s (cP)
Specific Gravity (Mixed) 1.58
Pot Life 30 minutes
Thixotropic Index (5/50 rpm) 1.3
Curing Performance
Cure Schedule Time
Room Temp Cure 24 hours @ 25°C
Heat Cure 4 hours @ 65°C
Cured Material Properties
Property Value
Coefficient of Expansion 3.5 × 10⁻⁵ cm/cm/°C
Glass Transition Temperature (Tg) 80°C
Hardness (Shore D) 85
Thermal Conductivity 0.5 W/(m-K)
Heat Distortion Temperature 102°C
Electrical Properties
Property Value
Volume Resistivity @ 25°C 4 × 10¹⁶ ohm-cm
Volume Resistivity @ 100°C 4 × 10¹⁴ ohm-cm
Dielectric Strength 510 V/mil
Dielectric Constant / Dissipation Factor 4.1 / 0.01 (@ 1 KHz)
3.8 / 0.01 (@ 100 KHz)
Mechanical Properties
Property Value
Lap Shear Strength (Aluminum) 18 N/mm² (2,600 psi)

4. Storage & Handling

  • Store at ≤ 27°C in dry conditions.
  • Pre-mixed materials have an expiration date based on storage temperature.
  • If crystallization occurs, warm at 52°C for 30 min before use.
  • Do not return used material to the original container.

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