Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

GEPN638 Epoxy Resin

GEPN638 is a high-performance epoxy resin from the GEPN series by Guangdong Yuhua Chemical, offering excellent adhesion, thermal stability and low viscosity for composites, coatings and electronic encapsulation applications. It features superior mechanical strength, moisture resistance and compatibility with standard amine and anhydride hardeners.
  • gepn638 epoxy resin_0816122c
  • gepn638 epoxy resin_0816122c

Features Of GEPN638 Epoxy Resin

  1. High reactivity with amine and anhydride hardeners for rapid cure at ambient or elevated temperatures.

  2. Excellent adhesion to metals, composites, and cured polymer substrates without surface priming.

  3. Low viscosity (12,000–14,000 cP at 25°C) enabling easy processing, impregnation, and void-free casting.

  4. Superior thermal stability with glass transition temperature (Tg) exceeding 125°C after full cure.

  5. Low chloride content (<0.02%) ensuring high electrical insulation performance and corrosion resistance.

Typical Applications Of GEPN638 Epoxy Resin

  1. Electrical encapsulation of power electronics, transformers, and high-voltage insulators.

  2. Structural adhesive formulation for aerospace composite bonding and automotive lightweight assemblies.

  3. Matrix resin for filament-wound pressure vessels and carbon fiber reinforced pipes.

  4. Underfill and conformal coating in semiconductor packaging and PCB protection.

  5. Casting and potting of industrial sensors, LED modules, and precision optical components.

Specifications Of GEPN638 Epoxy Resin

Chemical TypeBisphenol-F based liquid epoxy resin
Product FormClear, low-viscosity amber liquid
AppearanceTransparent, slightly yellowish liquid
Epoxy Equivalent Weight (EEW)175–185 g/eq
Viscosity (25°C)12,000–14,000 cP
Chloride Content<0.02 wt%
Volatility (Loss on Heating at 150°C, 2 h)<0.5 wt%
Storage Stability12 months at 25°C in sealed container


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *