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

YD-128A Epoxy Resin

YD-128A Epoxy Resin is a high-performance bisphenol-A-based epoxy resin from the YD series by Wuxi Yada Chemical. It offers excellent adhesion, chemical resistance, and mechanical strength, widely used in composites, coatings, and electronic encapsulation. Low viscosity ensures easy processing, while superior thermal stability supports demanding industrial applications.
  • yd 128a epoxy resin_a6821cd8
  • yd 128a epoxy resin_a6821cd8

Features Of YD-128A Epoxy Resin

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

  2. Excellent compatibility with common amine, anhydride, and phenolic curing agents.

  3. Low viscosity (11,000–13,000 cP at 25°C) enabling easy processing and improved filler dispersion.

  4. Superior electrical insulation properties and low dielectric loss at elevated frequencies.

  5. Good thermal stability with glass transition temperature (Tg) of cured system up to 125°C.

Typical Applications Of YD-128A Epoxy Resin

  1. Electrical encapsulation and potting compounds for transformers, reactors, and sensors.

  2. High-voltage insulating coatings and busbar protective layers.

  3. Structural adhesives in aerospace and automotive composite bonding.

  4. Base resin for filament-wound pipes and pressure vessels requiring chemical resistance.

  5. Matrix resin in printed circuit board (PCB) prepregs and laminates.

Specifications Of YD-128A Epoxy Resin

Chemical TypeBisphenol-A diglycidyl ether (DGEBA)
Product FormClear, low-viscosity amber liquid
AppearanceTransparent to slightly yellow, homogeneous liquid
Epoxy Equivalent Weight (EEW)187–193 g/eq
Viscosity (25°C)11,000–13,000 cP
Chlorine Content≤ 800 ppm
Hydrolyzable Chloride≤ 150 ppm
Softening PointNot applicable (liquid at room temperature)


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