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High-performance unsaturated polyester resin designed for vacuum pressure impregnation (VPI) systems.
Excellent electrical insulation properties and thermal stability up to Class H (180 °C).
Low viscosity and controlled reactivity for deep, uniform penetration into complex stator and rotor windings.
Good compatibility with common accelerators and curing agents, enabling flexible process optimization.
Low volatile organic compound (VOC) content, supporting environmentally responsible manufacturing practices.
Electrical insulation of medium- and high-voltage electric motor windings.
Vacuum pressure impregnation (VPI) of generators and alternators in power generation equipment.
Insulation systems for traction motors used in rail and industrial electric vehicles.
Encapsulation and impregnation of transformers and reactors requiring robust dielectric integrity.
| Chemical Type | Unsaturated Polyester Resin |
| Product Form | Liquid |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Viscosity (25 °C, mPa·s) | 250–450 |
| Reactive Diluent Content | Styrene, ~35–40 wt% |
| Density (20 °C, g/cm³) | 1.08–1.12 |
| Flash Point (PMCC, °C) | 35–40 |
| Primary Applications | Vacuum Pressure Impregnation (VPI) for rotating electrical machines |
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
