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

EPU-73B Epoxy Resin

EPU-73B Epoxy Resin is a high-performance bisphenol-A-based epoxy resin from the EPU series by Epolam. Designed for structural adhesives and composite laminates, it offers excellent mechanical strength, low viscosity, and superior chemical resistance. Ideal for aerospace, wind energy, and automotive applications requiring reliable thermal stability and easy processability.
  • epu 73b epoxy resin_b428f92c
  • epu 73b epoxy resin_b428f92c

Features Of EPU-73B Epoxy Resin

  1. High-performance bisphenol-A based liquid epoxy resin with excellent mechanical strength and chemical resistance.

  2. Low viscosity (12,000–14,000 cP at 25°C) enabling easy handling, mixing, and impregnation of fiber reinforcements.

  3. Superior adhesion to metals, composites, and cured thermosets—ideal for structural bonding and coating applications.

  4. Good thermal stability with glass transition temperature (Tg) up to 130°C after full curing with standard amine hardeners.

  5. Low volatility and low halogen content, supporting compliance with RoHS and REACH regulatory requirements.

Typical Applications Of EPU-73B Epoxy Resin

  1. Aerospace composite matrix resin for prepregs and filament-wound components.

  2. Electrical insulation systems in high-voltage transformers and bushings.

  3. Structural adhesive formulations for automotive lightweight assemblies.

  4. Protective coatings for offshore and industrial steel infrastructure.

  5. Encapsulants and potting compounds for power electronics and LED modules.

Specifications Of EPU-73B Epoxy Resin

Chemical TypeBisphenol-A diglycidyl ether (DGEBA)
Product FormClear, low-viscosity liquid
AppearanceWater-white to pale yellow, transparent
Epoxy Equivalent Weight (EEW)185–192 g/eq
Viscosity (25°C)12,000–14,000 cP
Chloride Content≤ 500 ppm
Density (25°C)1.16–1.18 g/cm³
Storage Stability≥ 12 months at ≤ 25°C in sealed containers


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