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Fast-reacting aliphatic amine-based curing agent for rapid ambient-cure epoxy systems.
Excellent compatibility with standard liquid epoxy resins (e.g., DGEBA types).
Low viscosity enables easy handling, precise metering, and improved filler dispersion.
Provides good mechanical strength, chemical resistance, and adhesion to metals and concrete.
Non-crystalline liquid formulation ensures consistent performance across storage temperatures.
Structural adhesives for automotive and aerospace assembly.
Repair mortars and anchoring grouts in construction and infrastructure.
Electrical potting and encapsulation compounds for industrial electronics.
High-performance coatings for steel and concrete protection.
Composite matrix resins in filament winding and pultrusion processes.
| Chemical Type | Aliphatic polyamine adduct |
| Product Form | Liquid |
| Appearance | Clear, pale yellow liquid |
| Viscosity (25°C) | 200–400 cP |
| Specific Gravity (25°C) | 0.92–0.96 |
| Amine Value | 380–420 mg KOH/g |
| Reactivity Profile | Ambient-cure (20–25°C), gel time ~30–60 min (with EPON 828 at 10 phr) |
| Storage Stability | 12 months in sealed container at 5–30°C |
Q1: What is the primary function of T31L in epoxy systems?
A: T31L is a modified amine-based curing agent designed to initiate and accelerate the crosslinking reaction of liquid and solid epoxy resins, delivering balanced pot life, rapid ambient-cure development, and good mechanical properties in final cured films.
Q2: Is T31L suitable for ambient-cure coatings and adhesives?
A: Yes — T31L is specifically formulated for ambient-temperature curing applications, including protective coatings, flooring systems, and structural adhesives where forced drying or oven curing is not feasible.
Q3: How does T31L compare to standard aliphatic amines in terms of handling and odor?
A: T31L offers significantly reduced volatility and milder amine odor compared to conventional aliphatic amines, improving workplace safety and user comfort during mixing and application without compromising reactivity.
Q4: What types of epoxy resins is T31L typically compatible with?
A: T31L demonstrates broad compatibility with standard DGEBA-type liquid epoxy resins (e.g., EPON 828, YD-128) and many solid bisphenol-A epoxy resins, though optimal performance requires formulation-specific evaluation and adjustment.
Q5: What is the typical dosage range for T31L in epoxy formulations?
A: Dosage depends on resin type, desired cure profile, and end-use requirements, but T31L is generally used at low concentrations — typically ranging from 0.1% to 2% by weight relative to the epoxy resin — and should be optimized through small-scale trials.
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