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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)

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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