Applications

Everwide JD322 One-Component Epoxy Adhesive

Brand: Everwide
Product Number: JD322
Technology: One-Component Epoxy Adhesive
Color: Black
Cure Type: Heat Curing
Package Size: Contact us for details
Shelf Life: 6 months

Product Description

Everwide JD322 is a one-component epoxy adhesive designed for bonding electronic components. It provides excellent adhesion strength and fast curing at medium-low temperatures, making it suitable for plastics bonding, memory cards, CMOS assembly, and heat-sensitive components. The cured product exhibits low gloss, excellent dimensional stability, and strong chemical and solvent resistance.

Key Features

  • Solvent-free, non-volatile one-component epoxy
  • Low-gloss cured surface with no oiliness
  • Strong electrical insulation retention in high humidity
  • Excellent resistance to chemicals and solvents
  • Superior protection and shock resistance for bonded components
  • Wide temperature stability and high durability
  • Complies with 2011/65/EU RoHS regulations
  • Meets chlorine < 900ppm, bromine < 900ppm, chlorine + bromine < 1500ppm limits

Recommended Applications

  • Bonding of electronic components
  • Memory cards and CMOS module assembly
  • Heat-sensitive component bonding
  • Plastic bonding applications

Technical Data

Typical Uncured Properties
Property JD322
Appearance Liquid
Color Black
Viscosity (25°C, S14 5rpm, cps) 128,000–192,000
Thixotropic Index 4–6
Filler Grain Size (µm) 2–5 (Max <10)
Filler Ratio (%) 23
Chloride (Cl) (ppm) <50
Potassium (K) (ppm) <10
Sodium (Na) (ppm) <30
Curing Properties
Property Value
Pot Life (25°C) 2 days
Cure Time (80°C) 60 min
Cure Time (90°C) 50 min
Cure Time (100°C) 40 min
Cure Time (120°C) 30 min
Cure Time (150°C) 20 min
Typical Cured Properties
Property Value
Glass Transition Temperature (Tg) (DSC) 132°C
Glass Transition Temperature (Tg) (TMA) 152°C
CTE (<Tg) (µm/m/°C) 48
CTE (>Tg) (µm/m/°C) 162
Durometer Hardness (Shore D) 90
Specific Gravity 1.33
Water Absorption (25°C, 24 hr) 0.36%
Water Absorption (80°C, 24 hr) 1.54%
Water Absorption (97°C, 1.5 hr) 0.86%
Shear Strength (LCP vs. PCB-FR4, 120°C, 30 min) 162 kgf/cm²
Shear Strength (LCP vs. PCB-FR4, 150°C, 60 min) 218 kgf/cm²
Thrust Force (PC vs. PCB-FR4) 112.6 kg
Substrate Breaking Strength (Epoxy Sheet) 285 kg/cm²
Elongation (%) 7.2
Flexural Modulus (GPa) 11
Young’s Modulus (25°C) 8 GPa
Young’s Modulus (120°C) 0.4 GPa
Volume Shrinkage (%) 2.9
Degradation Temperature (TGA, 10°C/min) 413°C
Thermal Conductivity 0.5 W/mK
Thermal Resistance 0.006 m²K/W
Volume Resistivity 4.5 × 10¹⁵ ohm-cm
Surface Resistivity 4.5 × 10¹⁴ ohm
Dielectric Strength 16 kV/mm
Temperature Resistance Range -40 to 150°C
Dielectric Constant (1 kHz) 3.315
Dielectric Loss (1 kHz) 0.02

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