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

KUKDO SMPN-638S Epoxy Resin

KUKDO SMPN-638S Epoxy Resin is a high-performance liquid bisphenol-A epoxy resin from KUKDO’s SMPN series offering excellent adhesion thermal stability and chemical resistance ideal for coatings composites and electrical encapsulation applications with low viscosity and superior curing reactivity.
  • kukdo smpn 638s epoxy resin_e32193c9
  • kukdo smpn 638s epoxy resin_e32193c9

Features Of KUKDO SMPN-638S Epoxy Resin

  1. High reactivity with amine and anhydride curing agents for rapid gelation and short cycle times.

  2. Excellent adhesion to metals, composites, and treated plastics under ambient and elevated temperature conditions.

  3. Low viscosity (12,000–15,000 cP at 25°C) enabling easy processing, impregnation, and air release in casting and laminating.

  4. Superior electrical insulation properties with high dielectric strength and volume resistivity.

  5. Good thermal stability with glass transition temperature (Tg) of 120–125°C after full cure with standard DICY hardener.

Typical Applications Of KUKDO SMPN-638S Epoxy Resin

  1. Electrical encapsulation and potting of transformers, reactors, and high-voltage insulators.

  2. Structural bonding and adhesive formulations for aerospace composite assemblies.

  3. Matrix resin for filament-wound pressure vessels and FRP piping systems.

  4. Castings for industrial tooling, jigs, and precision metrology fixtures.

  5. Prepreg and infusion resins for wind turbine blade root sections and spar caps.

Specifications Of KUKDO SMPN-638S Epoxy Resin

Chemical TypeBisphenol-F based liquid epoxy resin
Product FormClear to pale amber viscous liquid
AppearanceHomogeneous, transparent, free from gels and suspended particles
Epoxy Equivalent Weight (EEW)185–195 g/eq
Viscosity (25°C)12,000–15,000 cP
Chlorine Content≤ 700 ppm (total chlorine)
Softening PointNot applicable (liquid at room temperature)
Primary ApplicationsHigh-performance electrical insulation, structural composites, and precision casting


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