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LOCTITE STYCAST 2850GT CAT 27-1

  • Item Name: LOCTITE STYCAST 2850GT CAT 27-1
  • Manufacturer: Henkel
  • Product Category: Encapsulation Compound
  • Technologies: Epoxy
  • Applications: Ideal for encapsulating components that require effective heat dissipation and thermal shock resistance.
  • Color: Black
  • Cure Type: Oven Cure
  • Package Size: Contact Avantek for details.
  • Shelf Life: 12 months

1. Product Overview

  • Technology: Epoxy
  • Appearance: Black (Resin)
  • Components: Two-part system (requires mixing)
  • Mix Ratio:
    • By weight: 100 (Material) : 6 (Catalyst)
    • By volume: 100 (Material) : 14 (Catalyst)
  • Cure Type: Oven cure
  • Operating Temperature: -40°C to +175°C
  • Key Benefits:
    • Low Coefficient of Thermal Expansion (CTE)
    • Thermally conductive & electrically insulating
    • Good chemical resistance & mechanical strength
    • Suitable for general-purpose encapsulation

2. Applications

  • Encapsulation of components requiring heat dissipation and thermal shock resistance
  • Suitable for applications where electrical insulation and thermal conductivity are critical

3. Typical Properties

Uncured Properties

Property Part A (Resin) Part B (Catalyst) Mixed
Viscosity (mPa·s) 400,000 250-300
Density (g/cm³) 2.32 2.262
Shelf Life (@ 25°C, months) 12

Cure Schedule

Cure Method Duration Temperature
Oven Cure 4 hours 120°C

Cured Properties

Property Value
Density (g/cm³) 2.348
Hardness (Shore D) 94
Glass Transition Temperature (Tg) 140°C (DMA), 147°C (TMA)
Thermal Conductivity (W/m-K) 1.3
Volume Shrinkage on Cure (%) 1.08
Water Absorption (%) 0.02 (1 day @ 25°C), 0.07 (1 week @ 25°C)

Electrical Properties

Property Value
Volume Resistivity (Ω·cm) 5.53×10¹⁵
Surface Resistivity (Ω) 2.59×10¹⁵
Dielectric Strength (kV/mm) 20
Dielectric Constant / Dissipation Factor 4.5/0.002 (50 Hz), 5.0/0.005 (1 kHz), 4.7/0.019 (1 MHz)

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