Applications

Everwide JB267-12 Epoxy for Optical and Electronic Devices

Brand: Everwide
Product Number: JB267-12
Technology: Epoxy for Optical and Electronic Devices
Color: Light Yellow (Part A), Yellow (Part B)
Cure Type: Heat Curing
Package Size: Contact us for details
Shelf Life: 1 year

Product Description

Everwide JB267-12 is a two-component epoxy resin developed for fiber optics, semiconductor, electronic, and medical device applications. It provides excellent bonding performance on a variety of substrates and offers long working time after mixing. This epoxy exhibits low outgassing, high-temperature resistance, and strong chemical resistance, making it suitable for precision applications.

Key Features

  • Long working time after mixing for flexible processing
  • Easy to apply, quick defoaming, and excellent fluidity
  • Amber color change upon curing for easy visual inspection
  • High chemical and solvent resistance
  • Low outgassing and high-temperature resistance
  • Complies with 2011/65/EU RoHS regulations

Recommended Applications

  • Fiber optics and semiconductor bonding
  • Electronic device encapsulation
  • Medical device assembly
  • Applications requiring high chemical and temperature resistance

Technical Data

Typical Uncured Properties
Property JB267-12A (Part A) JB267-12B (Part B)
Appearance Liquid Liquid
Color Light Yellow Yellow
Viscosity (25°C, S14 100rpm, cps) 2,500–4,600 1,000–1,700
Mixing Viscosity (25°C, S14 100rpm, cps) 2,000–3,000
Curing Properties
Property Value
Mix Ratio (A:B) by Weight 10:1
Pot Life (25°C) 3 hr
Cure Time (80°C) 40 min
Cure Time (100°C) 10 min
Cure Time (120°C) 5 min
Cure Time (150°C) 2 min
Typical Cured Properties
Property Value
Glass Transition Temperature (Tg) (MDSC) 113°C
CTE (<Tg), µm/m/°C 58
CTE (>Tg), µm/m/°C 200
Specific Heat (25°C) 0.9 J/g°C
Specific Heat (50°C) 1.1 J/g°C
Specific Heat (75°C) 1.2 J/g°C
Specific Heat (100°C) 1.4 J/g°C
Durometer Hardness (Shore D) 86
Specific Gravity 1.22
Water Absorption (25°C, 24 hr) 0.08%
Water Absorption (80°C, 24 hr) 4.32%
Water Absorption (97°C, 1.5 hr) 1.54%
Shear Strength (Al vs. Al) 267 kgf/cm²
Shear Strength (Al vs. Al, 85°C, 85%RH, 1000hr) 335 kgf/cm²
Shear Strength (Glass vs. Glass) 154 kgf/cm²
Degradation Temperature (TGA, 10°C/min) 372°C
Weight Loss Ratio @ 100°C 0%
Weight Loss Ratio @ 150°C 1.2%
Weight Loss Ratio @ 200°C 1.2%
Weight Loss Ratio @ 250°C 1.5%
Weight Loss Ratio @ 300°C 2.2%
Weight Loss Ratio @ 350°C 3.9%
Thermal Conductivity 0.3 W/mK
Thermal Resistance 0.01 m²K/W
Volume Resistivity 4.5 × 10¹⁵ ohm-cm
Surface Resistivity 4.5 × 10¹⁴ ohm
Dielectric Constant (1kHz) 3.2

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