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Low-viscosity liquid formulation enables excellent mixing and wetting with epoxy resins.
Fast room-temperature cure profile without requiring elevated post-cure temperatures.
High crosslink density delivers superior chemical resistance and mechanical strength.
Low exotherm during curing enhances safety and dimensional stability for thick-section castings.
Compatible with standard bisphenol-A and bisphenol-F epoxy systems.
Electrical potting and encapsulation of transformers, sensors, and PCBs.
Structural adhesives for aerospace and automotive composite bonding.
High-performance flooring and industrial coatings requiring abrasion resistance.
Wind turbine blade bonding and repair formulations.
Marine-grade protective coatings for hulls and offshore equipment.
| Chemical Type | Amine-based aliphatic polyamine adduct |
| Product Form | Clear to pale yellow liquid |
| Appearance | Homogeneous, free from sediment or haze |
| Density (25°C) | 0.94–0.97 g/cm³ |
| Viscosity (25°C) | 250–350 mPa·s |
| Amine Value | 220–240 mg KOH/g |
| Reactivity (Gel Time with DGEBA at 25°C) | 60–90 minutes |
| Shelf Life (Unopened, 25°C) | 12 months |
Q1: What is the primary chemical class of SM2125?
A: SM2125 is a modified amine-based epoxy curing agent, designed to offer balanced reactivity, low volatility, and improved compatibility with standard bisphenol-A and bisphenol-F epoxy resins.
Q2: Is SM2125 suitable for ambient-cure applications?
A: Yes — SM2125 is formulated to enable effective curing at room temperature, though full property development may benefit from mild thermal post-cure (e.g., 60–80 °C for 1–2 hours), depending on film thickness and formulation design.
Q3: How does SM2125 compare to conventional aliphatic amines in terms of pot life and handling safety?
A: SM2125 offers extended pot life compared to highly reactive aliphatic amines, reducing exothermic risk during mixing and application. It also exhibits lower vapor pressure and reduced skin sensitization potential, supporting safer industrial handling when used with appropriate PPE.
Q4: What types of epoxy systems is SM2125 typically recommended for?
A: SM2125 is widely used in protective coatings, electrical encapsulants, adhesive formulations, and composite matrices where moderate cure speed, good adhesion to metals and composites, and acceptable flexibility are required.
Q5: How should SM2125 be stored to maintain stability?
A: Store in original sealed containers under dry, cool conditions (below 30 °C) and away from moisture, strong oxidizing agents, and direct sunlight. Prolonged exposure to humid air may lead to surface blushing or viscosity increase due to amine-carbamate formation.
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E-mail: wangxingqiang@ericwchem.com
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