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LOCTITE STYCAST EO 1058 – Epoxy Potting and Encapsulating Compound – Thermal and environmental protection for sensors in harsh automotive applications

  • Item Name: LOCTITE STYCAST EO 1058
  • Manufacturer: Henkel Corporation
  • Product category: Epoxy encapsulant
  • Technologies: One-component epoxy system designed for excellent environmental and thermal protection
  • Applications: Ideal for potting and encapsulating sensors and electronic components in harsh automotive environments
  • Color: Black
  • Cure type: Heat cure (curing at 125°C)
  • Package size: Contact to Techniq VN for details
  • Shelf life: 213 days (at -40°C)

1. Product Overview

LOCTITE STYCAST EO 1058 is a one-component, black epoxy compound designed for potting and encapsulation. It offers excellent environmental and thermal protection, making it ideal for harsh environments such as automotive applications. The product requires heat curing at 125°C or higher.

2. Applications

  • Potting and encapsulating electronic components
  • Protecting sensors in harsh environmental conditions (e.g., automotive applications)

3. Typical Properties

Property Value
Uncured Properties
Viscosity @ 25°C (Spindle 7, 20 rpm) 50,000 mPa·s (cP)
Filler Content 62%
Specific Gravity 1.65
Pot Life @ 25°C 10 days
Shelf Life @ -40°C 213 days
Curing Properties
Gel Time @ 121°C 12 min
Recommended Cure 2 hrs @ 140°C or 3 hrs @ 125°C
Cured Properties
Glass Transition Temp. (Tg) 140°C
Coefficient of Thermal Expansion (α1) 24 ppm/°C
Hardness (Shore D) 90
Tensile Modulus 4,826 N/mm² (700,000 psi)
Flexural Modulus 7,860 N/mm² (1,140,000 psi)
Thermal Conductivity 0.54 W/(m-K)
Moisture Absorption (120 hrs @ 15 psi) 0.78%
Elongation 1.96%
Electrical Properties
Dielectric Constant @ 1kHz (25°C) 4.31
Dielectric Constant @ 100kHz (25°C) 3.77
Dielectric Constant @ 1kHz (100°C) 4.27
Mechanical Properties
Flexural Strength 83 N/mm² (12,000 psi)
Tensile Strength 70 N/mm² (10,000 psi)

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