Applications

Everwide JC349-4 One-Component Epoxy Adhesive

Brand: Everwide
Product Number: JC349-4
Technology: One-Component Epoxy Adhesive
Color: Black
Cure Type: Heat Curing
Package Size: Contact us for details
Shelf Life: 1 year

Product Description

Everwide JC349-4 is a one-component epoxy adhesive designed for electronic device applications. It develops tough, strong structural bonds with excellent shear, peel, and impact strength. The cured product provides superior protection and vibration resistance, making it suitable for electronic encapsulation. This resin exhibits high durability, excellent electrical insulation, and moisture resistance, ensuring long-term reliability in demanding conditions.

Key Features

  • Solvent-free, non-volatile system
  • Excellent vibration resistance for electronic devices
  • High dimensional stability over a wide temperature range
  • Outstanding electrical insulation retention in high humidity conditions
  • Strong moisture and water resistance
  • Superior environmental durability with excellent retained strength
  • UL94V-0 flame retardant compliance
  • Complies with 2011/65/EU RoHS regulations
  • Meets chlorine < 900ppm, bromine < 900ppm, chlorine + bromine < 1500ppm limits

Recommended Applications

  • Bonding and encapsulation of electronic components
  • Industrial applications requiring high-strength bonding
  • Adhesion in vibration-prone environments

Technical Data

Typical Uncured Properties
Property JC349-4
Appearance Liquid
Color Black
Viscosity (25°C, S14 10rpm, cps) 45,000–85,000
Curing Properties
Property Value
Pot Life (25°C) 7 days
Through Cure Time (120°C) 40 min
Typical Cured Properties
Property Value
Glass Transition Temperature (Tg) 130°C
CTE (<Tg), µm/m/°C 50
CTE (>Tg), µm/m/°C 160
Durometer Hardness (Shore D) 89
Specific Gravity 1.48
Water Absorption (25°C, 24 hr) 0.59%
Water Absorption (80°C, 24 hr) 2.06%
Water Absorption (97°C, 1.5 hr) 0.84%
Degradation Temperature (TGA, 10°C/min) 317°C
Weight Loss Ratio @ 100°C 0.17%
Weight Loss Ratio @ 150°C 0.33%
Weight Loss Ratio @ 200°C 0.47%
Weight Loss Ratio @ 250°C 0.83%
Weight Loss Ratio @ 300°C 2.99%
Weight Loss Ratio @ 350°C 13.50%
Volume Resistivity 4.5 × 10¹⁵ ohm-cm
Surface Resistivity 4.5 × 10¹⁴ ohm
Dielectric Constant (1 kHz) 3.2

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