Applications

LOCTITE® SI 5084™ – Alkoxy silicone adhesive sealant – Transparent bonding and sealing applications

  • Item Name: LOCTITE® SI 5084™
  • Manufacturer: Henkel
  • Product Category: Gasketing/Sealing Sealant
  • Technologies: Silicone (Alkoxy silicone)
  • Applications: Designed for gasketing and sealing applications, offering non-corrosive, high-strength performance.
  • Color: Translucent straw colored paste
  • Cure Type: Ultraviolet (UV) light cure with secondary moisture cure
  • Package Size: Contact Techniq VN for details.
  • Shelf Life: Contact Techniq VN for details.

1. Product Overview

  • Technology: Silicone
  • Chemical Type: Alkoxy silicone
  • Appearance (Uncured): Translucent straw-colored paste
  • Components: One-component, no mixing required
  • Cure Type: UV light with secondary moisture cure
  • Key Benefits:
    • High-speed production curing
    • Non-corrosive and high flexibility
    • Enhanced load-bearing and shock-absorbing properties
    • High strength
    • Resistant to weathering, moisture, and ozone

2. Applications

  • Primary Uses: Gasketing and sealing
  • Industries: Suitable for applications requiring high-strength sealing with UV/moisture curing capabilities
  • Key Features:
    • Adheres to aluminum, glass, and steel
    • Suitable for environments with exposure to weathering and moisture
    • Provides instant functional strength

3. Typical Properties

Uncured Properties

Property Value
Specific Gravity (25°C) 1.11
Flow (ISO 7390) 0 mm (Thixotropic)
Extrusion Rate 140 – 300 g/min

Curing Performance

Condition Skin Over Time Tack Free Time
Cured @ 250 mW/cm² 2 sec 4 sec
Cured @ 75 mW/cm² 2 sec 6 sec
Moisture Cure (7 days) 77 min 93 min
  • Depth of Cure:
    • Limited to ~6 mm via moisture cure
    • Rapid depth cure achievable with focused UV light

Cured Properties (7 days, 22°C, 50% RH)

Property Value
Tear Strength (ISO 34-1) 13.2 N/mm (75 lb./in)
Water Absorption (ISO 62, 24h) 0%
Shore Hardness (ISO 868) 32 – 47
Elongation (ISO 37) ≥250%
Tensile Strength (ISO 37) ≥3.4 N/mm² (≥493 psi)

Electrical Properties

Property Value
Dielectric Constant (100 Hz) 2.99
Dielectric Breakdown Strength 490 kV/mm
Volume Resistivity 5.5 × 10¹⁴ Ω·cm

Adhesive Performance

Substrate Lap Shear Strength (N/mm²) 180° Peel Strength (N/mm)
Aluminum to Glass 1.2 (175 psi) 2.1 (12 lb/in)
Steel to Glass 1.5 (217 psi) 2.3 (13 lb/in)
Glass to Glass 1.4 (203 psi) 5.4 (31 lb/in)

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