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

KUKDO SM639 Epoxy Resin

KUKDO SM639 Epoxy Resin is a high-performance bisphenol-A based liquid epoxy resin from KUKDO’s SM series, offering excellent adhesion, chemical resistance and mechanical strength. Widely used in composites, electrical encapsulation and industrial coatings, it features low viscosity, good reactivity with amines/anhydrides and consistent batch-to-batch quality. Ideal for demanding structural and protective applications requiring reliability and process efficiency.
  • kukdo sm639 epoxy resin_25025ed6
  • kukdo sm639 epoxy resin_25025ed6

Features Of KUKDO SM639 Epoxy Resin

  1. High reactivity with amine and anhydride hardeners for rapid cure development.

  2. Excellent adhesion to metals, composites, and cured epoxy substrates.

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

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

  5. Good chemical resistance to alkalis, dilute acids, and solvents after full cure.

Typical Applications Of KUKDO SM639 Epoxy Resin

  1. Electrical encapsulation and potting of transformers, reactors, and busbar systems.

  2. Structural adhesive formulations for aerospace composite bonding.

  3. High-performance laminating resin for printed circuit board (PCB) prepregs.

  4. Insulating coatings and varnishes for rotating electrical machinery.

  5. Matrix resin in filament-wound pressure vessels and piping systems.

Specifications Of KUKDO SM639 Epoxy Resin

Chemical TypeDiglycidyl ether of bisphenol-F (DGEBF)
Product FormClear to pale yellow viscous liquid
AppearanceTransparent, homogeneous, free from gels or sediment
Epoxy Equivalent Weight (EEW)168–174 g/eq
Viscosity (25°C)12,000–15,000 cP
Softening PointNot applicable (liquid at room temperature)
Chloride Content≤ 700 ppm
Volatiles Content≤ 0.3 wt%


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