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

Chang Chun BE-501X-75 Epoxy Curing Agent

ChangChunBE-501X-75EpoxyCuringAgentisahigh-performancealiphaticpolyaminehardenerfromChangChun’sBEseries,offeringexcellentflexibility,lowtemperaturecuringcapability,andoutstandingadhesiontopolymersandmetals.Idealfordemandingcoatings,compositesandadhesiveswherefastcureandchemicalresistancearecritical.
  • chang chun be 501x 75 epoxy curing agent_27e704d4
  • chang chun be 501x 75 epoxy curing agent_27e704d4

Features Of Chang Chun BE-501X-75 Epoxy Curing Agent

  1. High reactivity with standard bisphenol-A and bisphenol-F epoxy resins at ambient to moderate elevated temperatures.

  2. Excellent chemical resistance post-cure, including resistance to alkalis, solvents, and mild acids.

  3. Low viscosity formulation enabling easy handling, precise metering, and improved filler dispersion.

  4. Good thermal stability with glass transition temperature (Tg) exceeding 120 °C in cured systems.

  5. Low volatility and non-hazardous classification under standard transport regulations (UN3082).

Typical Applications Of Chang Chun BE-501X-75 Epoxy Curing Agent

  1. Electrical encapsulation and potting compounds for transformers, reactors, and power modules.

  2. High-performance structural adhesives in automotive and rail transportation assemblies.

  3. Coating systems for corrosion protection of steel substrates in marine and industrial environments.

  4. Composite matrix resin for filament-wound pressure vessels and wind turbine blade components.

  5. Underfill and conformal coating formulations in electronics packaging and PCB protection.

Specifications Of Chang Chun BE-501X-75 Epoxy Curing Agent

Chemical TypeAmine-based aliphatic polyamine adduct
Product FormLiquid
AppearancePale yellow to amber clear liquid
Specific Gravity (25 °C)0.94–0.97 g/cm³
Viscosity (25 °C)250–400 mPa·s
Amine Value380–420 mg KOH/g
Flash Point (COC)≥120 °C
Storage Stability≥12 months at 5–30 °C in sealed original container


Chang Chun BE-501X-75 Epoxy Curing Agent – Frequently Asked Questions (FAQ)

Q1: What is the primary functional role of BE-501X-75 in epoxy systems?

A: BE-501X-75 is a latent, low-viscosity amine-based curing agent designed to provide controlled reactivity and extended pot life at ambient temperatures, while enabling rapid and thorough cure upon thermal activation—typically above 120 °C.


Q2: How does BE-501X-75 compare to conventional DICY-type hardeners in terms of processing safety and handling?

A: Unlike traditional dicyandiamide (DICY) hardeners, BE-501X-75 exhibits improved dust control and reduced inhalation risk due to its liquid form and lower volatility, supporting safer industrial handling without requiring specialized respiratory protection under standard ventilation conditions.


Q3: Is BE-501X-75 compatible with standard bisphenol-A and bisphenol-F epoxy resins?

A: Yes, BE-501X-75 demonstrates broad compatibility with common liquid and solid epoxy resins, including diglycidyl ether of bisphenol-A (DGEBA) and bisphenol-F (DGEBF), delivering consistent gel times and mechanical performance across typical formulation ranges.


Q4: What storage conditions are recommended to maintain long-term stability?

A: Store in original sealed containers at temperatures between 5 °C and 30 °C, away from direct sunlight and moisture. Under these conditions, BE-501X-75 maintains chemical stability for at least 12 months from date of manufacture.



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