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High purity bisphenol A-based epoxy resin with consistent molecular weight distribution.
Excellent mechanical strength and dimensional stability after curing.
Superior chemical resistance to alkalis, dilute acids, and solvents.
Low volatility and low halogen content, supporting RoHS-compliant formulations.
Optimized viscosity for easy handling and compatibility with common amine and anhydride hardeners.
Electrical insulation systems for transformers, reactors, and bushings.
Structural adhesives in automotive and aerospace composite bonding.
Protective coatings for marine and industrial steel infrastructure.
Encapsulants and potting compounds for electronic components and PCBs.
Matrix resin for fiber-reinforced laminates in wind turbine blades and sporting goods.
| Chemical Type | Bisphenol A diglycidyl ether (DGEBA) |
| Product Form | Liquid resin |
| Appearance | Pale yellow to water-white transparent liquid |
| Epoxy Equivalent Weight (EEW) | 185–192 g/eq |
| Viscosity (25°C) | 12,000–15,000 mPa·s |
| Chlorine Content | ≤ 700 ppm |
| Softening Point | Not applicable (liquid at room temperature) |
| Storage Stability | Stable for ≥12 months at <25°C in sealed containers |
Q1: What are the primary application areas for Sanmu SM618?
A: Sanmu SM618 is widely used in high-performance coatings, electrical laminates, adhesives, and composite matrices where excellent chemical resistance, thermal stability, and mechanical strength are required. It is especially suited for industrial maintenance coatings and printed circuit board (PCB) prepregs.
Q2: How does SM618 compare to standard liquid DGEBA resins in terms of reactivity and handling?
A: SM618 exhibits moderate reactivity—slightly lower than low-molecular-weight DGEBA resins due to its controlled molecular weight distribution and optimized viscosity. This offers improved pot life during processing while still enabling efficient curing with common amine or anhydride hardeners.
Q3: Is SM618 compatible with common epoxy curing agents and modifiers?
A: Yes, SM618 demonstrates broad compatibility with aliphatic and aromatic amines, cycloaliphatic amines, anhydrides, and polyamide hardeners. It also blends well with reactive diluents, flexibilizers, and fillers commonly used in industrial epoxy formulations.
Q4: What are the recommended storage conditions to maintain product stability?
A: Store SM618 in tightly sealed containers at temperatures between 10°C and 30°C, away from direct sunlight and moisture. Prolonged exposure to elevated temperatures or humidity may lead to viscosity increase or premature gelation.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
