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Fast-reacting aliphatic amine-based curing agent for room-temperature and elevated-temperature epoxy systems.
Low viscosity (< 500 cP at 25°C) ensures excellent mixability and air-release in formulated resins.
Superior chemical resistance—particularly to alkalis, solvents, and mild acids—after full cure.
Low volatility and non-hazardous classification per GHS (no skin sensitization or acute toxicity warnings).
Enables high glass transition temperature (Tg > 120°C) in cured epoxy networks without post-baking.
Structural adhesives for aerospace composite bonding and metal-to-composite assembly.
High-performance coating systems for industrial flooring and corrosion-resistant tank linings.
Electrical encapsulation and potting compounds for power electronics and EV battery modules.
Wind turbine blade adhesive joints and repair formulations requiring rapid green strength development.
Tooling and mold-making resins where dimensional stability and low exotherm are critical.
| Chemical Type | Aliphatic polyamine adduct |
| Product Form | Liquid |
| Appearance | Clear, pale yellow liquid |
| Density (25°C) | 0.92–0.94 g/cm³ |
| Viscosity (25°C) | 350–450 cP |
| Amine Value | 210–230 mg KOH/g |
| Primary Applications | Epoxy resin curing for structural adhesives, coatings, and composites |
| Key Features | Room-temperature cure, low odor, hydrolytic stability |
Q1: What types of resins is HDX-960E compatible with?
A: HDX-960E is specifically formulated for use with epoxy resins, including liquid bisphenol-A and bisphenol-F types, as well as certain novolac and cycloaliphatic epoxies. Compatibility should be confirmed via small-scale formulation testing under intended processing conditions.
Q2: How does HDX-960E affect pot life and cure speed compared to conventional amine curing agents?
A: HDX-960E offers a balanced reactivity profile—providing extended pot life at ambient temperature while enabling efficient thermal cure at elevated temperatures (typically 80–120 °C). It avoids the rapid exotherm or premature gelation sometimes seen with highly reactive aliphatic amines.
Q3: Is HDX-960E suitable for applications requiring low volatility and reduced odor?
A: Yes—HDX-960E is a low-volatility, non-yellowing curing agent with minimal amine odor, making it well-suited for indoor applications, coatings, and systems where worker exposure and ambient air quality are key considerations.
Q4: What is the typical dosage range for HDX-960E in epoxy formulations?
A: Dosage depends on formulation requirements and desired performance profile, but HDX-960E is typically used at low concentrations—generally ranging from 0.1% to 2% by weight relative to the epoxy resin—and is often blended with other co-curing agents to fine-tune properties.
Q5: Does HDX-960E require post-cure to achieve optimal chemical resistance?
A: While HDX-960E achieves functional cure at moderate temperatures, a controlled thermal post-cure (e.g., 1–2 hours at 100–110 °C) is recommended to maximize crosslink density, hardness, and long-term resistance to solvents and chemicals.
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