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LOCTITE ECCOBOND FP4654

  • Item Name: LOCTITE ECCOBOND FP4654
  • Manufacturer: Henkel
  • Product Category: Encapsulation/Dam & Fill Adhesive
  • Technologies: Epoxy and Anhydride
  • Applications: Cavity fill or dam-and-fill for encapsulation, damming, or filler applications
  • Color: Black
  • Cure Type: Heat cure
  • Package Size: Contact Avantek for details.
  • Shelf Life: Approximately 9 months (at -40°C)

1. Product Overview

LOCTITE ECCOBOND FP4654 is a high-purity, low-stress, self-leveling epoxy encapsulant designed for cavity-fill or dam-and-fill applications. It offers excellent chemical resistance, thermal stability, and is jettable for precise dispensing.

2. Applications

  • Encapsulation
  • Damming or filler applications
  • Larger cavity-fill or dam-and-fill uses

3. Typical Properties

Uncured Properties

Property Value
Appearance Black
Viscosity (25°C, Spindle 52, 20 rpm) 32,000 mPa·s (cP)
Pot Life @ 25°C >3 days
Gel Time @ 121°C 11 min
Shelf Life @ -40°C 274 days
Specific Gravity @ 25°C 1.85

Curing Performance

Cure Schedule Condition
Primary Cure 30 min @ 125°C
Post Cure 90 min @ 165°C

Cured Properties

Property Value
Coefficient of Thermal Expansion (ppm/°C) Below Tg: 13, Above Tg: 53
Glass Transition Temperature (Tg) 146°C
Tensile Modulus (DMA) 16,900 N/mm² (2,451,000 psi)
Extractable Ionic Content (ppm) Cl⁻: 10, Na⁺: 5, K⁺: 5

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