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Offers excellent flexibility and impact resistance in cured epoxy systems.
Provides good chemical resistance, particularly to alkalis and solvents.
Delivers low exotherm during cure, enabling safe processing of thick-section castings.
Enables extended pot life at ambient temperatures for improved processing window.
Compatible with standard liquid epoxy resins (e.g., DGEBA types) without solvent addition.
Industrial flooring and protective coatings for concrete substrates.
Electrical encapsulation and potting compounds for transformers and busbars.
Marine and offshore anti-corrosive coating systems.
Adhesives and structural bonding formulations requiring toughness and durability.
Repair mortars and grouts for infrastructure maintenance.
| Chemical Type | Polyamide adduct |
| Product Form | Liquid |
| Appearance | Amber to brown viscous liquid |
| Primary Applications | Epoxy resin curing agent for coatings, adhesives, and composites |
| Key Features | Low-temperature cure capability, flexible cured film, good adhesion |
| Benefits | Reduced VOC potential, no formaldehyde, non-sensitizing formulation |
| Storage Stability | Stable for ≥12 months at 20–25°C in sealed containers |
| Recommended Mix Ratio (by weight) | 100 parts epoxy resin : 35–45 parts Aradur 125 |
Q1: What is the primary function of Aradur 125 in epoxy systems?
A: Aradur 125 is a polyamide-based curing agent designed to react with epoxy resins, enabling crosslinking at ambient or slightly elevated temperatures. It imparts flexibility, good adhesion, and chemical resistance to the cured network, making it suitable for protective coatings and industrial maintenance applications.
Q2: Is Aradur 125 compatible with standard bisphenol-A and bisphenol-F epoxy resins?
A: Yes, Aradur 125 demonstrates broad compatibility with common liquid and solid bisphenol-A and bisphenol-F epoxy resins. Optimal performance is achieved when formulation parameters—including resin type, molecular weight, and viscosity—are considered during system design.
Q3: How does humidity affect the curing performance of Aradur 125?
A: As a polyamide curing agent, Aradur 125 exhibits relatively good tolerance to moderate ambient humidity during application and cure—unlike highly moisture-sensitive amine types. However, prolonged exposure to high relative humidity may influence surface dry time and final film appearance, so controlled application conditions are recommended for critical performance requirements.
Q4: Can Aradur 125 be used in food-contact or potable water applications?
A: Aradur 125 is not pre-qualified for direct food-contact or potable water applications under major global regulatory frameworks. Formulators intending such use must conduct full system-level compliance testing and obtain appropriate regulatory approvals based on the final cured product’s intended service conditions.
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