Industry Challenge
Modern electric and hybrid vehicles demand higher voltages, higher temperatures, and tighter production cycles.
Automotive armature coils operate in environments where:
- Extreme Heat – Repeated thermal cycling causes conventional insulation to crack or expand, reducing reliability.
- High Voltage Stress – Voltage spikes increase the risk of dielectric breakdown and premature failure.
- Low Production Efficiency – Long curing times slow down high-volume manufacturing.
Manufacturers need an epoxy insulation system that delivers superior thermal stability, electrical safety, and faster processing.
The YQXPolymer Solution
YQXPolymer High-Performance Epoxy System is engineered specifically for automotive armature coil insulation. It eliminates the limitations of traditional materials with:
- Higher Heat Resistance – Glass transition temperature (Tg) of 50 °C ensures dimensional stability during thermal cycling.
- Faster Curing – Gel time of 520 s at 120 °C, about 7 % faster than typical systems, boosting production throughput.
- Exceptional Electrical Safety – Dielectric strength of 27 kV/mm and volume resistivity of 2.3 × 10¹⁵ Ω·cm provide long-term high-voltage protection.
- Superior Mechanical Strength – Flexural strength of 125 MPa and tensile strength of 65 MPa withstand vibration and mechanical shock.
- Environmental Compliance – Solvent-free, low VOC formulation meets REACH, RoHS, and IATF 16949 requirements.
Key Technical Data
| Property | Unit | YQX Polymer |
| Mixing ratio | wt. | 100 : 20 |
| Mixed viscosity (25 °C) | Pa·s | 2.5 |
| Gel time (120 °C) | s | 520 |
| Glass transition temperature (TMA) | °C | 50 |
| Flexural strength | MPa | 125 |
| Tensile strength | MPa | 65 |
| Breakdown voltage | kV/mm | 27 |
| Volume resistivity | Ω·cm | 2.3 × 10¹⁵ |
| Dielectric constant (25 °C, 1 kHz) | – | 4.3 |
| Dielectric loss (25 °C, 1 kHz) | % | 0.7 |
These results match over 95 % of leading international specifications such as VATL—making YQX Polymer a true drop-in replacement for well-known imported brands.
Application Scenarios
- Vacuum Pressure Impregnation (VPI)
Ultra-low mixed viscosity guarantees deep penetration into every winding gap, creating a dense moisture-proof insulation layer. - End-Turn Encapsulation & Potting
Provides strong mechanical support and long-term protection against salt fog, condensation, and automotive fluids. - EV Traction & Start-Stop Motors
Meets Class F/H insulation ratings for continuous high-temperature, high-speed operation.
Market Advantages
- Direct Import Replacement – Full parameter alignment with global brands lowers supply-chain costs and lead times.
- EV Growth Ready – Perfect fit for the expanding electric vehicle and hybrid market with higher voltage requirements.
- Higher Productivity – Faster gel time shortens production cycles for OEMs and Tier-1 suppliers.
Conclusion
As the automotive industry accelerates toward electrification and higher power density, YQX Polymer High-Performance Epoxy System delivers superior thermal stability, outstanding electrical insulation, and efficient processing.
It is not just a competitive alternative to traditional imported resins—it is a new benchmark for reliability and manufacturing efficiency in modern armature coil insulation.
Contact Us
YQX Polymer
📧 Email: [email protected]
📞 Phone / WeChat: +86-135-4070-2776
🌐 Website: www.yqxpolymer.com
