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Low viscosity for excellent flow and wetting properties in casting and impregnation processes.
High purity with minimal volatile organic compounds (VOCs), supporting compliance with industrial safety standards.
Excellent adhesion to metals, glass, and composite substrates without requiring surface priming.
Good thermal stability and chemical resistance after full cure with compatible hardeners.
Consistent reactivity profile enabling predictable gel time and pot life across batch production.
Electrical insulation systems for transformers, reactors, and high-voltage bushings.
Structural adhesive formulations for aerospace and automotive composite bonding.
Casting and encapsulation of electronic components and sensors.
Matrix resin in fiber-reinforced polymer (FRP) laminates for corrosion-resistant tanks and piping.
Tooling and mold-making applications requiring dimensional stability and low shrinkage.
| Chemical Type | Bisphenol-A based liquid epoxy resin |
| Product Form | Clear, amber-colored liquid |
| Appearance | Homogeneous, transparent, free from gels or suspended particles |
| Epoxy Equivalent Weight (EEW) | 184–190 g/eq |
| Viscosity at 25°C | 12,000–14,000 mPa·s |
| Chloride Content | ≤ 800 ppm |
| Softening Point | Not applicable (liquid at room temperature) |
| Storage Stability | 12 months at 20–25°C in sealed original packaging |
Q1: What is the primary function of Sanmu SM828 A in epoxy formulations?
A: Sanmu SM828 A serves as a reactive diluent and viscosity modifier, enabling improved processability without significantly compromising the final cured network’s thermal and mechanical performance.
Q2: Is SM828 A compatible with common amine and anhydride hardeners?
A: Yes — SM828 A demonstrates broad compatibility with standard aliphatic and aromatic amines, as well as cyclic anhydrides, supporting flexible formulation design across coating, adhesive, and encapsulation systems.
Q3: How does SM828 A affect pot life and cure kinetics?
A: As a mono-functional reactive diluent, it generally extends working time compared to higher-functionality resins, while maintaining acceptable reactivity under conventional thermal curing conditions.
Q4: Can SM828 A be used in food-contact or electronics-grade applications?
A: SM828 A is formulated for industrial epoxy systems where low volatility and controlled reactivity are valued; suitability for regulated end-uses requires full formulation validation by the end user against applicable safety and performance requirements.
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