Amivion PEA-403 is a trifunctional polyetheramine epoxy curing agent based on a poly(propylene oxide) triol backbone with primary amine end groups. The product belongs to the T-series polyetheramine family (equivalent in type to T-403 grade), characterized by three reactive primary amine groups attached to a flexible poly(propylene oxide) chain structure. The polyether backbone imparts a combination of low viscosity, good flexibility in cured systems, and compatibility with epoxy resins, polyurea systems, and polyurethane precursors. Amivion PEA-403 is used in epoxy casting, wind energy composites, flexible coatings, potting compounds, and polyurea elastomer formulations where a soft and flexible cross-linked network, low temperature performance, and processability at ambient conditions are required.
Key Features
- Trifunctional Amine for Three-Dimensional Cross-Linking: Amivion PEA-403 carries three primary amine groups per molecule, enabling formation of a three-dimensional cross-linked epoxy network with a single hardener component. Trifunctionality provides a higher cross-link density contribution per equivalent compared to difunctional polyetheramines, while the flexible polyether backbone moderates the resulting Tg and improves impact and fatigue resistance in demanding structural applications.
- Flexible Poly(Propylene Oxide) Backbone: The poly(propylene oxide) segments in Amivion PEA-403 introduce significant chain mobility into the cured epoxy or polyurea network, reducing brittleness and improving resistance to crack propagation, thermal cycling, and impact loading. This flexibility is particularly valuable in wind turbine blade laminates, structural adhesives, and potting compounds operating under dynamic mechanical stress.
- Low Viscosity for Processing: The liquid state and relatively low viscosity of Amivion PEA-403 facilitate formulation of low-viscosity two-component epoxy systems suitable for vacuum infusion, resin transfer moulding (RTM), and casting applications. Low-viscosity systems improve wet-out of fibrous reinforcements and enable filling of complex mould geometries without extensive heating.
- Good Low-Temperature Performance: Cured epoxy systems containing Amivion PEA-403 retain good toughness and flexibility at sub-ambient temperatures, a result of the low glass transition contribution from the polyether segments. This thermal performance profile is relevant to applications in cold climate environments, cryogenic service potting compounds, and structural components subject to wide temperature swings during service.
- Compatibility with Polyurea and Polyurethane Systems: In addition to epoxy curing agent applications, Amivion PEA-403 is compatible with isocyanate-based systems for polyurea elastomer and polyurea-epoxy hybrid formulations. This versatility extends the product’s utility across coating, lining, and elastomer applications where rapid ambient cure and durable mechanical performance are required.
Typical Applications
Amivion PEA-403 is used as the curing agent or reactive component in epoxy casting resins, composite laminates, and polyurea elastomer systems. In wind energy applications, it is evaluated in infusion and casting resin systems for rotor blade manufacturing, where good wet-out, ambient or moderate-temperature cure, and long-term fatigue resistance are required. In structural composites and adhesives, Amivion PEA-403 contributes to improved impact and peel strength in demanding bonding applications. Potting and encapsulation compounds for electrical and electronic assemblies benefit from the combination of ambient cure, good dielectric properties, and flexibility at low temperatures.
Additional applications include flexible protective coatings and linings for concrete and steel structures requiring crack-bridging capability and resistance to dynamic deformation; polyurea spray coatings for waterproofing and corrosion protection; adhesive systems for bonding substrates with different coefficients of thermal expansion; and general-purpose casting resins for tooling, patterns, and decorative applications. Amivion PEA-403 is also used as a reactive modifier blended with other amine hardeners to adjust the flexibility, pot life, and processing window of two-component epoxy formulations.
Technical Specifications
- Chemical Type: Poly(propylene oxide) triamine (trifunctional polyetheramine; T-403 type)
- CAS No.: 39423-51-3
- Functionality: 3 (trifunctional; three primary amine end groups)
- Nominal Molecular Weight: ~440 g/mol (to be confirmed based on the final specification sheet)
- Appearance: To be confirmed based on the final specification sheet.
- Amine Value: To be confirmed based on the final specification sheet.
- Active Hydrogen Equivalent Weight (AHEW): To be confirmed based on the final specification sheet.
- Viscosity at 25°C: To be confirmed based on the final specification sheet.
- Color (APHA): To be confirmed based on the final specification sheet.
- Water Content: To be confirmed based on the final specification sheet.
Thermal Stability
- Amivion PEA-403 is thermally stable under normal storage and handling conditions.
- Avoid exposure to strong oxidizing agents, strong mineral acids, and temperatures significantly above the recommended storage maximum. Decomposition upon heating may release amine vapors; handle in well-ventilated areas.
Storage Recommendations
- Recommended maximum storage temperature: To be confirmed based on the final specification sheet.
- Store in a cool, dry, well-ventilated area away from heat sources, direct sunlight, and moisture.
- Keep containers tightly sealed to prevent CO₂ absorption, moisture uptake, and oxidative discoloration.
- Avoid contact with strong acids, strong oxidizing agents, aldehydes, and isocyanates outside of intended use.
Packaging & Transport
- Standard Packaging: To be confirmed based on the final specification sheet.
- UN Number: To be confirmed based on the final specification sheet.
- Transport Class: To be confirmed based on the final specification sheet.
Amivion PEA-403: Safety & Handling
Amivion PEA-403 should be handled in accordance with applicable safety procedures for polyetheramine compounds. The product may cause skin sensitization and eye irritation upon contact, and respiratory irritation upon vapor or mist exposure. Personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing should be worn during handling, mixing, and spray application. Adequate ventilation should be maintained to control amine vapor concentrations in enclosed work areas. Users should review the Safety Data Sheet prior to use and implement the engineering controls and personal protective measures specified therein.
Safety Data Sheet and destination-compliant labeling information are available upon request. For related products, see also Amivion PEA-301 and Amivion MAA-1000.