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

HDX-850B Curing Agent

HDX-850B Curing Agent is a high-performance aliphatic polyamine hardener from the HDX Series by Hangzhou Hengda Chemical—designed for epoxy resins requiring rapid cure, low viscosity, and excellent weather resistance. It delivers superior flexibility, chemical resistance, and low-temperature reactivity without blush formation—ideal for coatings, adhesives, and composite applications demanding durability and clarity.
  • hdx 850b curing agent_4eb89d7b
  • hdx 850b curing agent_4eb89d7b

Features Of HDX-850B Curing Agent

  1. Low-viscosity liquid formulation enables excellent mixing and dispersion in epoxy resin systems.

  2. Fast ambient-cure capability with full handling strength achieved within 6–8 hours at 25°C.

  3. High thermal stability, supporting continuous service temperatures up to 120°C after full cure.

  4. Low exotherm profile minimizes internal stress and warpage in thick-section castings and laminates.

  5. Compatible with standard DGEBA and novolac-type epoxy resins without pre-drying or special handling.

Typical Applications Of HDX-850B Curing Agent

  1. Electrical encapsulation and potting of transformers, sensors, and power modules.

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

  3. High-performance flooring and grouting systems in industrial and cleanroom environments.

  4. Wind turbine blade root joints and structural reinforcements requiring rapid turnaround.

  5. Tooling and mold-making compounds where dimensional stability and low shrinkage are critical.

Specifications Of HDX-850B Curing Agent

Chemical TypeAmine-functionalized aliphatic polyether
Product FormClear to pale yellow liquid
AppearanceHomogeneous, low-viscosity liquid
Primary ApplicationsEpoxy resin curing for electrical, structural, and industrial coatings
Key FeaturesAmbient-curing, low exotherm, high Tg, moisture-tolerant
BenefitsReduced processing time, improved interfacial adhesion, extended pot life vs. conventional amines
Storage Stability12 months in sealed container at 15–25°C
Shelf Life24 months unopened under recommended conditions


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