Modified Aromatic Amine Epoxy Hardener Series (High Tg &Low viscostiy, Heavy-Duty Chemical Resistance)
Developed and manufactured by Shanghai Feimi , our Modified Aromatic Amine Epoxy Hardener Series represents an advanced generation of high-performance curing agents designed to conquer severe thermal, chemical, and structural environments. Unmodified aromatic amine curing agents (such as MDA or DDE) traditionally offer exceptional heat and chemical resistance, but they face major processing drawbacks—including high melting points, liquid crystallization at ambient temperatures, health/safety concerns, and slow room-temperature reactivity. Through proprietary molecular modification and blending, Feimi Material's Modified Aromatic Amine Ecure-27, Ecure-11 lowers the melting point and system viscosity, significantly improving worker handling and pot life while retaining or enhancing the core benefits of aromatic ammine chemistry: high Glass Transition Temperatures (Tg), superior resistance to strong acids/solvents, and exceptional mechanical toughness.
Product Specifications & Technical Features
Our modified aromatic amine hardeners feature consistent amine hydrogen equivalent weight (AHEW), low liquid viscosity at ambient or mild heating temperatures, and excellent compatibility with Bisphenol A, Bisphenol F, and Epoxy Novolac resins.
Typical Performance Specifications:
| Products | Ecure-11 | Ecure-27 |
|---|---|---|
| 外观 Appearance | 琥珀色或棕红色液体 Amber liquid or Brownish-red | 琥珀色或棕红色液体 Amber liquid or Brownish-red |
| 粘度(25℃,mPa.s) Viscosity | ~100 | ~100 |
| 活泼氢当量(g/mol) AHEW | 45 | 44 |
| 适合使用量(NPEL-128) Recommended Use Level | 100:24 | 100:23 |
Curing Products Performance
| Products | Ecure-11 | Ecure-27 | MDA |
|---|---|---|---|
| 粘度(25℃,mPa.s) Viscosity | ~100 | ~100 | 固体 |
| 凝胶时间 Gel time 25℃ 150g(min) | 170 | ~600 | 500 |
| 凝胶时间 Gel time 60℃ 150g(min) | 78 | 150 | |
| 玻璃化温度(℃)[1] Glass transition temperature | 156 | ~158 | 155 |
注 [1]：Standard liquid bis-phenol A epoxy+curing agent， 120℃ 1h + 150℃ 3h curing。
Key Product Advantages
- Optimized Handling & Low Ambient ViscosityChemical modification transforms solid or high-viscosity aromatic amines into easy-to-handle liquid formulations at ambient or moderate temperatures, simplifying metering, pumping, and resin mixing.
- High Thermal Stability & Superior Glass Transition Temperature (Tg)Delivers cured networks with Tg values up to 150℃~ 200℃, maintaining exceptional mechanical strength, creep resistance, and structural integrity under prolonged high-temperature exposure.
- Unmatched Corrosion & Chemical ResistanceExhibits extraordinary barrier resistance against hot concentrated acids, caustic alkalis, organic solvents, and crude oil, making it the industry standard for extreme chemical containment.
- Superior Mechanical Toughness & High Tensile/Flexural StrengthThe rigid aromatic ring architecture imparts high crosslink density, low shrinkage during cure, high impact resistance, and strong dynamic fatigue resistance.
- Extended Pot Life with Controllable Cure KineticsProvides longer room-temperature working windows for large-scale composite manufacturing (e.g., filament winding, RTM, pultrusion) while enabling rapid development of peak physical properties upon elevated-temperature post-curing.
Product Applications
- Heavy-Duty Anti-Corrosion Coatings & Linings: Internal protective linings for chemical storage tanks, oil & gas pipelines, marine ballast tanks, and industrial wastewater treatment facilities exposed to aggressive chemicals and elevated temperatures.
- Advanced Fiber-Reinforced Composites: Matrix hardener for carbon fiber and glass fiber filament winding, Resin Transfer Molding (RTM), pultrusion, and vacuum-assisted resin infusion (VARI) in aerospace, defense, and high-end industrial parts.
- Electrical & Electronic Insulation Systems: High-temperature motor impregnation varnishes, dry-type transformer casting, ignition coil potting, and high-voltage electrical insulation components.
- High-Temperature Structural Adhesives: Formulations for two-component (2K) structural adhesives, industrial repair pastes, and aerospace bonding requiring high shear and peel strength at high temperatures.
Storage and Handling
- Please refer to the MSDS.
Shelf Life and Storage Method
- At least 12 months from the date of manufacture.
- Store in a sealed container in a cool, dry place away from light; avoid prolonged exposure to air and water.
FAQ
- Q1: What are the main processing advantages of Modified Aromatic Amine Hardeners over unmodified aromatic ammines (such as MDA or DDA)?A: Unmodified aromatic ammines are typically solids or high-viscosity pastes at room temperature, requiring high melting temperatures and posing potential handling risks or crystallization issues. Modified aromatic ammines are engineered into liquid form at room or moderate temperatures, significantly lowering processing viscosity, extending pot life, and improving safety and operational ease during automated mixing, spraying, or vacuum infusion.
- Q2: Is heat post-curing mandatory for epoxy systems cured with modified aromatic amine hardeners?A: Yes. To achieve the maximum Glass Transition Temperature (Tg > 150℃), full crosslink density, and optimal chemical resistance, a thermal post-cure schedule (e.g., 80℃
120℃ initial cure followed by 140℃180℃ post-cure) is recommended. However, modified versions offer much better ambient B-staging and handling prior to heat cure. - Q3: Can Shanghai Feimi Material customize modified aromatic amine hardeners for specific viscosity or reactivity requirements?A: Yes. Feimi Material operates dedicated R&D labs and chemical synthesis lines. We can adjust the amine equivalent weight, gel time profile, color, or viscosity to perfectly match your processing machinery (such as RTM, filament winding, or two-component heated spraying) and end-use performance targets.
