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High-purity 90% molten amine formulation enabling consistent reactivity and low volatility handling.
Low-viscosity liquid at ambient temperature—no solvent required, simplifying metering and mixing processes.
Excellent thermal stability and hydrolytic resistance for demanding high-performance epoxy systems.
Enables fast cure kinetics at room and elevated temperatures without excessive exotherm.
Delivers superior mechanical properties—including high glass transition temperature (Tg) and chemical resistance—in cured composites.
Aerospace structural adhesives and composite matrix resins.
High-voltage electrical insulation systems and encapsulants.
Wind turbine blade bonding and structural reinforcements.
Automotive under-hood components requiring thermal and chemical durability.
Industrial tooling and mold-making epoxy formulations.
| Chemical Type | Aliphatic diamine (hexamethylenediamine derivative) |
| Product Form | Molten liquid (non-crystalline at 25°C) |
| Appearance | Clear, pale yellow liquid |
| Amine Value | ~460–480 mg KOH/g |
| Active Hydrogen Equivalent Weight | ~52–55 g/eq |
| Primary Applications | Epoxy resin curing agent for high-Tg structural composites |
| Key Features | Low viscosity, high reactivity, low volatility, no added solvents |
| Benefits | Improved processability, reduced VOC, enhanced thermal and mechanical performance |
Q1: What is the primary function of RHODIAMINE HMD in epoxy systems?
A: RHODIAMINE HMD serves as a highly reactive molten amine curing agent for epoxy resins, enabling rapid ambient- or elevated-temperature cure cycles while delivering excellent mechanical strength, chemical resistance, and thermal stability in the final thermoset network.
Q2: How does the molten state of RHODIAMINE HMD benefit formulation and processing?
A: Its low-melting, liquid-like consistency at moderate handling temperatures eliminates the need for solvent dissolution or high-shear melting steps—simplifying metering, improving homogeneity during mixing, and reducing energy input and processing time compared to solid amine alternatives.
Q3: Is RHODIAMINE HMD compatible with standard epoxy resins such as DGEBA and NOVOLAC types?
A: Yes—it exhibits broad compatibility with diglycidyl ether of bisphenol-A (DGEBA), epoxy novolacs, and other multifunctional epoxies. Cure behavior and final properties may vary depending on resin functionality and molecular weight, so optimization through small-scale trials is recommended.
Q4: What safety and handling precautions should be observed when working with RHODIAMINE HMD?
A: As a reactive amine, it is corrosive to skin and eyes and may cause sensitization. Users must wear appropriate PPE—including chemical-resistant gloves, goggles, and ventilation—and consult the latest Safety Data Sheet (SDS) prior to handling or scale-up.
Q5: Can RHODIAMINE HMD be used in applications requiring low viscosity or fast gelation?
A: Yes—its inherently low viscosity in the molten state supports easy incorporation into resin blends, and its high amine reactivity typically enables short gel times under ambient or mild heat conditions, making it suitable for coatings, adhesives, and casting applications where rapid throughput is valued.
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E-mail: wangxingqiang@ericwchem.com
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