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

NPC 904 904H 905H Epoxy Resin

NPC904904H905HEpoxyResinbyNanpingChemicalisahigh-performancebrominatedepoxyresinserieswithexcellentflameretardancy,thermalstabilityandelectricalinsulation,commonlyusedinPCBsubstrates,encapsulation,andadvancedcompositesforaerospaceandelectronicsapplications.
  • npc 904 904h 905h epoxy resin_feb34c42
  • npc 904 904h 905h epoxy resin_feb34c42

Features Of NPC 904 904H 905H Epoxy Resin

  1. High thermal stability with glass transition temperature (Tg) exceeding 120 °C after full cure.

  2. Excellent chemical resistance to acids, alkalis, and solvents in demanding industrial environments.

  3. Low viscosity formulation enabling easy processing, impregnation, and air-release during casting or laminating.

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

  5. Optimized for dual-cure systems — compatible with both amine and anhydride hardeners for flexible formulation design.

Typical Applications Of NPC 904 904H 905H Epoxy Resin

  1. Electrical encapsulation and potting of high-voltage transformers and power electronics.

  2. Structural adhesives for aerospace composite bonding and metal-to-composite joints.

  3. Matrix resin for filament-wound pressure vessels and corrosion-resistant piping systems.

  4. High-performance coatings for marine and offshore infrastructure requiring long-term UV and salt-spray resistance.

  5. Laminating resin for FR-4 grade printed circuit board (PCB) substrates and prepreg manufacturing.

Specifications Of NPC 904 904H 905H Epoxy Resin

Chemical TypeBisphenol-F based liquid epoxy resin
Product FormClear to pale amber viscous liquid
AppearanceHomogeneous, transparent, free of suspended particles or gels
Epoxy Equivalent Weight (EEW)180–195 g/eq
Viscosity at 25 °C12,000–16,000 cP
Chloride Content≤ 750 ppm
Volatiles Content≤ 0.3 wt%
Primary ApplicationsHigh-reliability electrical insulation, structural composites, protective coatings


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