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

YD-128SM Epoxy Resin

YD-128SM Epoxy Resin is a high-performance bisphenol-A based epoxy resin from the YD series by Wuxi Huachang Chemical. Featuring low viscosity, excellent adhesion, and superior electrical insulation, it’s widely used in electronic encapsulation, composites, and structural adhesives. Compatible with common amine and anhydride hardeners, it delivers consistent curing and thermal stability up to 130°C.
  • yd 128sm epoxy resin_92e1da09
  • yd 128sm epoxy resin_92e1da09

Features Of YD-128SM Epoxy Resin

  1. High-purity bisphenol-A based liquid epoxy resin with consistent molecular weight distribution.

  2. Low viscosity (12,000–14,000 cP at 25°C) enabling excellent processability and wetting in composite formulations.

  3. Superior thermal stability with glass transition temperature (Tg) of cured resin exceeding 120°C.

  4. Excellent electrical insulation properties and low dielectric loss suitable for electronic encapsulation.

  5. Reactive epoxide equivalent weight (EEW) of 184–190 g/eq, ensuring precise stoichiometric control during curing.

Typical Applications Of YD-128SM Epoxy Resin

  1. Electrical insulation coatings for transformers and reactors.

  2. Encapsulation and potting compounds for power electronics and LED modules.

  3. Structural adhesives in aerospace and automotive composites.

  4. Matrix resin for filament-wound pressure vessels and FRP tanks.

  5. High-performance laminates in printed circuit board (PCB) prepregs.

Specifications Of YD-128SM Epoxy Resin

Chemical TypeBisphenol-A diglycidyl ether (DGEBA)
Product FormClear, pale yellow liquid
AppearanceHomogeneous, transparent, free of gel particles or sediment
Epoxide Equivalent Weight (EEW)184–190 g/eq
Viscosity (25°C)12,000–14,000 cP
Chlorine Content (Total Cl)≤ 700 ppm
Volatiles Content≤ 0.3 wt%
Storage Stability (25°C)≥ 12 months in sealed containers


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