Applications

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%

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