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

XB9721 Epoxy Resin

XB9721 Epoxy Resin is a high-performance Bisphenol-A based epoxy resin from the XB Series by Xibao Chemical. It offers excellent adhesion thermal stability and chemical resistance ideal for composites coatings and electronic encapsulation. Low viscosity easy processing and superior mechanical strength make it widely used in aerospace wind energy and advanced manufacturing applications.
  • xb9721 epoxy resin_e6631ea3
  • xb9721 epoxy resin_e6631ea3

Features Of XB9721 Epoxy Resin

  1. High reactivity with standard amine and anhydride hardeners, enabling rapid cure at ambient or elevated temperatures.

  2. Excellent adhesion to metals, composites, and cured polymer substrates without mandatory surface priming.

  3. Low viscosity (12,000–15,000 cP at 25°C) for superior flow, wetting, and impregnation in fiber-reinforced systems.

  4. Good thermal stability with glass transition temperature (Tg) of 125–135°C in fully cured formulations.

  5. Low chloride content (<500 ppm), minimizing corrosion risk in electronic encapsulation and metal-bonding applications.

Typical Applications Of XB9721 Epoxy Resin

  1. Structural adhesives for aerospace and automotive bonding of aluminum, steel, and carbon fiber laminates.

  2. Electrical encapsulants and potting compounds for high-voltage transformers and power electronics.

  3. Matrix resin in pultrusion and filament winding processes for FRP profiles and utility poles.

  4. Coating binders for corrosion-resistant industrial tank linings and offshore platform protection.

  5. Composite tooling resins for low-expansion, high-dimensionally stable molds used in RTM and vacuum infusion.

Specifications Of XB9721 Epoxy Resin

Chemical TypeBisphenol-F based liquid epoxy resin
Product FormClear to pale amber viscous liquid
AppearanceHomogeneous, free from gels or particulates
Epoxy Equivalent Weight (EEW)178–186 g/eq
Viscosity (25°C)12,000–15,000 cP
Chloride Content<500 ppm
Volatile Organic Compounds (VOC)<50 g/L
Storage Stability12 months at <25°C in unopened original container


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