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LOCTITE STYCAST 1090 CAT 27-1

  • Item Name: LOCTITE STYCAST 1090 CAT 27-1
  • Manufacturer: Henkel Corporation
  • Product category: Epoxy encapsulant
  • Technologies: Low density syntactic foam featuring low CTE, low dielectric constant, low shrinkage, excellent moisture and chemical resistance
  • Applications: Designed for encapsulating and potting lightweight electronic assemblies in aerospace applications.
  • Color: Black (also available in white)
  • Cure type: Oven Cure
  • Package size: Contact to Avantek for details
  • Shelf life: 12 months

1. Product Overview

LOCTITE STYCAST 1090 CAT 27-1 is a two-component epoxy encapsulant designed for electronic assemblies requiring lower weight, such as aerospace applications. It offers:

  • Low density syntactic foam
  • Low coefficient of thermal expansion (CTE)
  • Low dielectric constant
  • Low shrinkage
  • Good moisture and chemical resistance
  • High physical strength

Curing Method: Oven cure (4 hours at 120°C)
Operating Temperature: -40 to 175°C
Available Colors: Black, White

2. Applications

  • Encapsulation and potting of electronic components
  • Aerospace applications requiring lightweight materials

3. Typical Properties

Uncured Properties
Property Part A (Resin) Part B (Hardener) Mixed
Appearance Black
Viscosity (mPa·s @ 25°C) 135,000 250 – 300
Specific Gravity 0.85
Density (g/cm³) 0.827
Shelf Life (@ 25°C, months) 12
Cured Properties
Property Value
Density (g/cm³) 0.849
Glass Transition Temperature (Tg, °C) (DMA / TMA) 129 / 83
Thermal Conductivity (W/m-K) 0.18
Hardness (Shore D) 80
Volume Shrinkage on Cure (%) 2.7
Water Absorption (%): 1 day / 1 week @ 25°C 0.07 / 0.3
Electrical Properties
Property Value
Volume Resistivity (ohm-cm) 1.8 × 10¹⁵
Surface Resistivity (ohms) 9.3 × 10¹³
Dielectric Strength (kV/mm) 24
Dielectric Constant / Dissipation Factor 50 Hz: 3.2 / 0.124
1 kHz: 3.0 / 0.032
1 MHz: 2.7 / 0.023

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