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High purity bisphenol A-based epoxy resin with consistent molecular weight distribution.
Excellent thermal stability and low volatility for safe handling and processing.
Superior adhesion to metals, glass, and composite substrates.
Low viscosity at elevated temperatures, enabling easy impregnation and coating application.
Compatible with standard amine and anhydride curing agents for versatile formulation design.
Electrical insulation systems for dry-type transformers and reactors.
Structural adhesives in aerospace and automotive composite bonding.
Prepregs and laminates for high-performance printed circuit boards (PCBs).
Encapsulation and potting compounds for power electronics and LED modules.
Wind turbine blade matrix resins requiring enhanced mechanical integrity and fatigue resistance.
| Chemical Type | Bisphenol A diglycidyl ether (DGEBA) epoxy resin |
| Product Form | Amber to light yellow viscous liquid |
| Appearance | Clear, homogeneous liquid without sediment or haze |
| Epoxy Equivalent Weight (EEW) | 185–195 g/eq |
| Viscosity (25°C) | 12,000–16,000 mPa·s |
| Chloride Content | ≤ 800 ppm |
| Softening Point | 12–16°C |
| Volatiles Content | ≤ 0.3 wt% |
Q1: What is the primary function of Sanmu E-20R in epoxy formulations?
A: Sanmu E-20R serves as a standard-grade liquid Bisphenol A epoxy resin, primarily used as the base polymer matrix in two-component epoxy systems. It provides excellent adhesion, chemical resistance, and mechanical strength after curing with suitable hardeners.
Q2: Is Sanmu E-20R compatible with common amine-based hardeners?
A: Yes, Sanmu E-20R is fully compatible with aliphatic, cycloaliphatic, and aromatic amine hardeners, as well as anhydride and phenolic curing agents. Optimal stoichiometry and cure schedules should be determined experimentally based on the specific hardener and end-use requirements.
Q3: How does Sanmu E-20R compare to higher-molecular-weight solid epoxy resins in terms of processing?
A: As a low-viscosity liquid resin, Sanmu E-20R offers easier handling, improved wetting of fillers and reinforcements, and simplified mixing without solvent or heating assistance—making it especially suitable for casting, potting, adhesive, and coating applications requiring good flow and self-leveling behavior.
Q4: Can Sanmu E-20R be used in food-contact or potable water applications?
A: Sanmu E-20R is not pre-certified for direct food-contact or potable water applications. Its suitability for such uses depends on full formulation compliance—including hardener selection, post-cure conditions, and third-party testing against relevant regulatory frameworks. Customers must validate final cured system performance per applicable regional requirements.
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E-mail: wangxingqiang@ericwchem.com
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