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