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LOCTITE STYCAST 1090 SI CAT 23LV – Epoxy Encapsulant – Aerospace & Electronic Assemblies

  • Item Name: LOCTITE STYCAST 1090 SI CAT 23LV
  • Manufacturer: Henkel
  • Product category: Encapsulation/Potting Adhesive
  • Technologies: Epoxy-based two-component system
  • Applications: Ideal for encapsulating and potting lightweight electronic assemblies in aerospace applications.
  • Color: Low color
  • Cure type: Room temperature cure
  • Package size: Contact to Techniq VN for details
  • Shelf life: 6 months

1. Product Overview

LOCTITE STYCAST 1090 SI CAT 23LV is a two-component epoxy designed for encapsulation and potting of electronic assemblies, particularly in aerospace applications where lower weight is required. It features low moisture absorption, excellent thermal shock resistance, and low dielectric constant.

2. Applications

  • Encapsulation and potting of electronic components
  • Aerospace applications requiring lightweight materials
  • Applications needing low dielectric constant and thermal stability

3. Typical Properties

Uncured Properties

Property LOCTITE STYCAST 1090 SI LOCTITE CAT 23LV
Thermal Conductivity (W/m-K) 0.17
Shore Hardness (Durometer D) 78
Flexural Strength (N/mm² / psi) 28 / 4,000
Water Absorption (%) 0.4
Volume Resistivity (Ω·cm) ≥1×10¹³
Dielectric Constant @ 5 GHz 2.16
Viscosity (mPa·s) 40,000 20-30
Specific Gravity 0.7 0.72
Shelf Life (@ 8-28°C) 180 days

Mixed Properties

Property Value
Mixed Viscosity (mPa·s) 1,800
Specific Gravity 0.72
Working Time (100g mass @ 25°C) 60 min

Cured Properties

Property Value
Coefficient of Thermal Expansion (ppm/°C) 54
Dielectric Strength (IEC 60243-1, kV/mm) 14.8
Operating Temperature Range (°C) -65 to 105

4. Cure Schedule

  • 16 to 24 hours @ 25°C
  • 4 to 6 hours @ 45°C
  • 2 to 4 minutes @ 65°C
  • Post cure: 2-4 hours at the highest expected use temperature

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