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LOCTITE STYCAST 2741 CAT 15

  • Item Name: LOCTITE STYCAST 2741 CAT 15
  • Manufacturer: Henkel
  • Product category: Encapsulation Adhesive (Epoxy)
  • Technologies: Epoxy system with amine catalyst
  • Applications: Designed for electronic embedment and sealing/cementing of metals, ceramics, and plastics.
  • Color: Black
  • Cure type: Room temperature cure or Heat cure
  • Package size: Contact to Avantek for details

1. Product Overview

LOCTITE STYCAST 2741 CAT 15 is a two-component epoxy system with amine curing. It is designed for electronic encapsulation, sealing, and cementing of metals, ceramics, and plastics. The product offers variable flexibility depending on the mix ratio and provides excellent shock and impact resistance.

2. Applications

  • Electronic embedment
  • Sealing and cementing of metals, ceramics, and plastics
  • General-purpose encapsulation

3. Typical Properties

Uncured Properties

Property Part A (STYCAST 2741) Part B (CAT 15) Mixed (Varies by Ratio)
Density (g/cm³) 1.65 0.97 1.15 – 1.32
Viscosity (mPa·s @ 25°C) 225,000 25,000 36,000 – 37,000

Mix Ratio (Material : Catalyst)

Property By Weight By Volume
Rigid Material 50:100 85:100
Semi-rigid Material 100:100 170:100
Flexible Material 150:100 250:100

Work Life (100g @ 25°C)

Property Time (minutes)
Rigid Material 120
Semi-rigid Material 140
Flexible Material 160

Curing Schedule

  • Room Temperature Cure: 16 – 24 hours @ 25°C
  • Heat Cure Options:
    • 4 – 6 hours @ 45°C
    • 2 – 4 hours @ 65°C

Cured Properties

Property Rigid Semi-rigid Flexible
Hardness Shore D 80 Shore D 60 Shore A 60
Thermal Conductivity (W/m-K) 0.35 0.35 0.35
Operating Temperature (°C) -40 to +90 -55 to +80 -55 to +65
Water Absorption (24h, %) 0.2 0.5
Linear Shrinkage (cm/cm) 0.001 0.001 0.001

Electrical Properties

  • Volume Resistivity: High insulating properties
  • Dielectric Strength: Suitable for electronic applications

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