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Thermal Management

LOCTITE STYCAST PC 40-UMF – Urethane Acrylate Conformal Coating – UV/moisture curable protection for electronics and substrates

  • Item Name: LOCTITE STYCAST PC 40-UMF
  • Manufacturer: Henkel
  • Product Category: Conformal Coating
  • Technologies: Urethane Acrylate
  • Applications: Conformal coating for electronic components on metal, ceramic, and glass-filled epoxy substrates.
  • Color: Clear liquid
  • Cure Type: Ultraviolet (UV) light activation followed by room temperature moisture cure
  • Package Size: Contact Techniq VN for details.
  • Shelf Life: 9 months

1. Product Overview

  • Technology: Urethane Acrylate
  • Appearance: Clear liquid
  • Curing Mechanism:
    • UV light activation
    • Followed by room temperature moisture cure
  • Key Benefits:
    • Single component
    • VOC-free
    • UV and moisture curable
  • Operating Temperature (Continuous): -40 to 135°C
  • Compliance: Conforms to IPC-CC-830 requirements

2. Applications

  • Application Type: Conformal coating
  • Suitable Substrates:
    • Variety of metal surfaces
    • Ceramic
    • Glass-filled epoxy

3. Typical Properties

Uncured Material
Property Value
Nominal Viscosity @ 25ºC 250 mPa·s (cP)
Specific Gravity @ 25ºC 1.08
Shelf Life 9 months (20-30ºC)
Curing Performance
Curing Method Conditions
UV Cure 10 sec @ 300-600 mW/cm² (365 nm)
Moisture Cure (shadowed areas) 2-3 days @ RT
Cured Material
Property Value
Hardness (Shore D) 80
Thermal Conductivity @ 25°C 0.26 W/(m-K)
Volume Resistivity 3.5 × 10¹⁶ ohm-cm
Surface Resistivity 3.8 × 10¹⁶ ohms
Dielectric Strength @ 2.64 mm 420 volts/mil
Dielectric Constant @ 1MHz 2.75
Dissipation Factor @ 1MHz 0.12
Environmental Resistance (Outgassing – NASA Standard)
Property Value
TML (Total Mass Loss) 0.87%
CVCM (Collected Volatile Condensable Material) <0.01%
WVR (Water Vapor Regain) 0.36%

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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