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High reactivity with epoxy resins, enabling rapid gelation and reduced cycle times.
Excellent low-temperature curing capability down to 5°C without compromising final mechanical properties.
Low viscosity (250–350 mPa·s at 25°C) ensures easy handling, precise metering, and superior wetting of fillers and reinforcements.
Non-halogenated formulation meets stringent environmental and safety requirements for electronics and aerospace applications.
Provides outstanding thermal stability and glass transition temperature (Tg > 140°C) in cured networks.
Encapsulants and potting compounds for high-reliability power electronics.
Structural adhesives in automotive lightweighting assemblies.
Prepregs and infusion resins for carbon fiber composites in wind energy blades.
Electrical insulation coatings for transformers and busbars.
Underfill materials for flip-chip and advanced semiconductor packaging.
| Chemical Type | Amine-functionalized aliphatic polyether |
| Product Form | Liquid |
| Appearance | Clear, pale yellow liquid |
| Density (25°C) | 1.02–1.05 g/cm³ |
| Viscosity (25°C) | 250–350 mPa·s |
| Amine Value | 380–420 mg KOH/g |
| Reactivity Profile | Fast-curing, latent-modified system |
| Storage Stability | ≥12 months at ≤25°C in sealed container |
Q1: What is the primary chemical class of HDX-60H Curing Agent?
A: HDX-60H is an amine-based curing agent, specifically formulated as a modified aliphatic polyamine with enhanced latency and reduced volatility compared to conventional aliphatic amines.
Q2: How does HDX-60H differ from standard DETA or TETA in epoxy systems?
A: HDX-60H offers improved pot life and reduced exotherm during cure, while maintaining good mechanical property development at ambient and moderate elevated temperatures. Its molecular design provides better compatibility and lower odor than traditional short-chain aliphatic amines.
Q3: What is the typical dosage range for HDX-60H in epoxy resin formulations?
A: Dosage depends on formulation requirements and target performance, but HDX-60H is typically used at low concentrations—generally ranging from 0.1% to 2% by weight relative to the epoxy resin—and is often employed as a co-curing agent or accelerator rather than a primary hardener.
Q4: Is HDX-60H suitable for applications requiring FDA compliance or food-contact safety?
A: HDX-60H is not pre-certified for food-contact use. Formulators must conduct full regulatory evaluation—including migration testing and toxicological assessment—as part of their final product qualification process. It may be considered for indirect food-contact applications where permitted by applicable regional regulations and supported by appropriate testing data.
Q5: Can HDX-60H be used in high-humidity or underwater curing conditions?
A: HDX-60H exhibits moderate moisture tolerance and can support acceptable cure development in humid environments, though prolonged exposure to standing water or condensation prior to gelation may affect film integrity. For immersion or underwater applications, supplementary formulation adjustments and performance validation are recommended.
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