Industries

LOCTITE STYCAST US 5529

  • Item Name: LOCTITE STYCAST US 5529
  • Manufacturer: Henkel Corporation
  • Product category: Urethane potting and encapsulating compound
  • Technologies: Flexible, flame retardant, mineral filled polyurethane system
  • Applications: Ideal for potting and encapsulating electronic components with long pot life and low odor
  • Color: Black (cured)
  • Cure type: Room temperature cure
  • Package size: Contact to Avantek for details
  • Shelf life: Contact to Avantek for details

1. Product Overview

LOCTITE STYCAST US 5529 is a flexible, flame-retardant, mineral-filled polyurethane potting compound. It has low viscosity, long pot life, and excellent adhesion to various substrates. The product has low odor and does not contain TDI or mercury compounds. While it is not UL recognized, it contains the same flame-retardant chemicals as LOCTITE STYCAST US 5528, which is UL recognized.

2. Applications

  • Potting and encapsulating electronic components.
  • Suitable for applications requiring flexibility and flame retardancy.

3. Typical Properties

Uncured Properties
Property Value
Viscosity @ 23°C (cPs) 2,400
Working Time (300 g mass @ 23°C) 45 min
Gel Time (300 g mass @ 23°C) 90 min
Curing Performance
  • Room Temperature Cure: 12–24 hours @ 22–30°C
  • Alternative Cure: 1–3 hours @ 65–85°C
Cured Properties
Property Value
Density (g/cc) 1.5
Shore Hardness (A) 85
Thermal Conductivity (W/m-K) 0.335
Coefficient of Thermal Expansion (ppm/°C) 150
Moisture Absorption (24 hrs @ 25°C) 0.01%
Weight Loss (168 hrs @ 130°C) 0.004%
Tensile Strength (psi) 540
Flammability (6.1 mm) UL 94V-0 (Pass)
Flammability (9.53 mm) UL 94V-0 (Pass)
Electrical Properties
Property Value
Dielectric Strength (V/mil) 972
Dielectric Constant @ 100 kHz 4.0
Dissipation Factor @ 100 kHz 0.04
Volume Resistivity (Ω·cm) 4.5 × 10¹³

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