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Thermal Management

DOWSIL™ SE 4485 – Two-component silicone adhesive – High-strength bonding and thermal management in electronics and industrial assemblies

  • Technology: One-part, moisture-cure, thermally conductive silicone adhesive
  • Brand Name: DOWSIL™ SE 4485 Thermally Conductive Adhesive
  • Manufacturer: Dow Chemical Company
  • Package Size: Contact Techniq VN for details
  • Shelf Life: Contact Techniq VN for details

1. Product Overview

DOWSIL™ SE 4485 is a one-part, white, moisture-curing silicone adhesive designed for thermal management applications. It provides high thermal conductivity, good adhesion, and fast tack-free time, making it suitable for cooling electronic modules.

Key Features & Benefits:

  • One-part, ready-to-use formulation
  • Semi-flowable consistency
  • Fast tack-free time (~10 minutes)
  • Strong adhesion to various substrates
  • Thermally conductive (2.8 W/mK)
  • UL 94 V-0 flame resistance rating

Composition:

  • Polydimethylsiloxane adhesive
  • Thermally conductive filler

2. Applications

DOWSIL™ SE 4485 is designed for efficient thermal transfer in various electronic cooling applications, including:

  • Lamps & LEDs
  • Telecommunication devices
  • Power supply modules
  • PCB system assemblies

It is particularly effective in managing heat from components by creating a thermal bridge between the device and heat dissipation elements like heat sinks.

3. Typical Properties

Property Unit Result
Before Curing (Unmixed)
One-part or Two-part One-part
Color White
Fluidity mm (inches) 54 (2.1)
Non-Volatile Content (NVC) % 99.2
After Curing
Specific Gravity 2.9
Tack-Free Time @ 25°C minutes 10
Tensile Strength psi (MPa) 492 (3.4)
Hardness (Shore A) 90
Lap Shear Strength (Glass) psi (MPa) 168 (1.2)
Dielectric Strength kV/mm 19
Thermal Conductivity W/mK 2.8
Agency Rating UL 94 V-0

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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