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

EPN1138 Phenolic Epoxy Resin

EPN1138 is a high-performance phenolic epoxy resin from the EPN series by DIC Corporation, featuring excellent thermal stability, chemical resistance and adhesion to metals. Widely used in powder coatings, electrical laminates and composites, it offers superior crosslinking density and low viscosity for easy processing. Its bromine-free formulation meets modern environmental standards while maintaining robust mechanical properties.
  • epn1138 phenolic epoxy resin_4488efd1
  • epn1138 phenolic epoxy resin_4488efd1

Features Of EPN1138 Phenolic Epoxy Resin

  1. High thermal stability with excellent resistance to elevated temperatures up to 180 °C continuous service.

  2. Superior chemical resistance to strong acids, alkalis, and organic solvents.

  3. Enhanced flame retardancy without halogenated additives — meets UL 94 V-0 when properly formulated.

  4. Low viscosity in molten state, enabling excellent flow and filler wetting for high-solids formulations.

  5. High crosslink density providing exceptional mechanical strength and dimensional stability after cure.

Typical Applications Of EPN1138 Phenolic Epoxy Resin

  1. Electrical insulation systems for high-voltage switchgear and dry-type transformers.

  2. Encapsulation and potting compounds for power electronics and EV battery modules.

  3. High-performance composite matrices in aerospace and defense structural components.

  4. Advanced printed circuit board (PCB) laminates requiring low Z-axis expansion and high Tg.

  5. Thermal management adhesives and bonding agents for heat-sensitive electronic assemblies.

Specifications Of EPN1138 Phenolic Epoxy Resin

Chemical TypeNovolac-based phenolic epoxy resin
Product FormPale yellow to amber solid pellets
AppearanceFree-flowing granular solid at room temperature
Epoxy Equivalent Weight (EEW)175–185 g/eq
Softening Point85–92 °C (ASTM D36)
Volatiles Content≤ 0.5 wt% (105 °C, 2 h)
Color (Gardner Scale)≤ 4
Key FeaturesHalogen-free, high char yield, low moisture absorption


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