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

NPC NPEL-128 Bisphenol A Epoxy Resin

NPCNPEL-128BisphenolAEpoxyResinisahigh-purity,low-viscosityliquidresinfromNPC’sNPELseries,designedforelectronicsencapsulation,adhesivesandcomposites.Itoffersexcellentmechanicalstrength,chemicalresistance,andelectricalinsulationwithlowchloridecontentandconsistentbatchtolerance.
  • npc npel 128 bisphenol a epoxy resin_96e0052f
  • npc npel 128 bisphenol a epoxy resin_96e0052f

Features Of NPC NPEL-128 Bisphenol A Epoxy Resin

  1. High epoxy equivalent weight (EEW) of 470–490 g/eq, enabling precise stoichiometric control in curing formulations.

  2. Low viscosity at 25 °C (10,000–12,000 cP), facilitating easy handling, mixing, and impregnation in composite processing.

  3. Excellent thermal stability with glass transition temperature (Tg) of cured resin exceeding 125 °C after post-cure.

  4. Superior chemical resistance to alkalis, dilute acids, and common solvents when fully cured.

  5. Consistent batch-to-batch reproducibility, meeting stringent quality requirements for industrial composites and electrical encapsulation.

Typical Applications Of NPC NPEL-128 Bisphenol A Epoxy Resin

  1. Electrical insulation systems for medium-voltage transformers and dry-type reactors.

  2. Structural adhesives in aerospace and automotive bonding applications requiring high Tg and dimensional stability.

  3. Matrix resin for filament-wound pressure vessels and fiber-reinforced polymer (FRP) tanks.

  4. Encapsulation compounds for power electronics, including IGBT modules and high-power LED assemblies.

  5. Powder coating base resin for durable, corrosion-resistant industrial metal finishing.

Specifications Of NPC NPEL-128 Bisphenol A Epoxy Resin

Chemical TypeBisphenol A-based liquid epoxy resin
Product FormClear to pale yellow viscous liquid
AppearanceHomogeneous, transparent, free from gels or suspended particles
Epoxy Equivalent Weight (EEW)470–490 g/eq
Viscosity at 25 °C10,000–12,000 cP
Chlorine Content (Total)≤ 800 ppm
Softening PointNot applicable (liquid at room temperature)
Volatiles Content≤ 0.3 wt%


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