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High purity bisphenol-A based liquid epoxy resin with consistent molecular weight distribution.
Excellent compatibility with standard amine and anhydride curing agents for broad formulation flexibility.
Low viscosity (12,000–14,000 cP at 25°C) enabling easy mixing, degassing, and impregnation of fibers or fillers.
Superior mechanical strength and thermal stability after full cure, supporting demanding structural applications.
Low chloride content (< 500 ppm), minimizing corrosion risk in metal-reinforced composites and electronic encapsulants.
Structural adhesives for aerospace and automotive bonding.
Electrical insulation systems in transformers, bushings, and high-voltage encapsulation.
Fiber-reinforced polymer (FRP) composites for wind turbine blades and marine components.
Potting and encapsulation of power electronics and LED modules.
High-performance coatings for chemical-resistant industrial flooring and tank linings.
| Chemical Type | Bisphenol-A epoxy resin |
| Product Form | Clear to pale yellow viscous liquid |
| Appearance | Transparent, slightly yellow, homogeneous liquid |
| Epoxy Equivalent Weight (EEW) | 185–192 g/eq |
| Viscosity (25°C) | 12,000–14,000 cP |
| Chloride Content | < 500 ppm |
| Color (Hazen) | < 30 |
| Softening Point | 12–16°C |
Q1: What is the primary application field for KUKDO SM828R?
A: KUKDO SM828R is specifically formulated as a reactive diluent and modifier for high-performance epoxy systems, commonly used in electrical encapsulation, potting compounds, and advanced composite matrices where reduced viscosity and enhanced flexibility are required.
Q2: How does SM828R affect the viscosity and cure profile of epoxy formulations?
A: SM828R significantly lowers initial mix viscosity without substantially compromising reactivity, enabling improved filler loading and air release. It participates in the epoxy cure reaction and generally extends gel time moderately while maintaining good thermal stability in the final network.
Q3: Is SM828R compatible with common amine and anhydride hardeners?
A: Yes, SM828R demonstrates broad compatibility with standard aliphatic and aromatic amines, as well as cyclic anhydrides. Compatibility should always be verified experimentally in the target formulation due to potential interactions with accelerators or additives.
Q4: What storage conditions are recommended to maintain product stability?
A: Store in original sealed containers at temperatures between 10 °C and 30 °C, away from moisture, direct sunlight, and strong oxidizing agents. Prolonged exposure to elevated temperatures or humidity may lead to increased viscosity or gelation over time.
Q5: Can SM828R be used in food-contact or medical-grade epoxy systems?
A: SM828R is not pre-qualified for regulated food-contact or medical device applications. Its use in such systems requires full regulatory assessment—including extractables profiling, biocompatibility testing, and compliance verification—by the end-formulator under applicable jurisdictional requirements.
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E-mail: wangxingqiang@ericwchem.com
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