Suzhou Volsun Electronics Technology Co., Ltd.
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VOLSUN-PPS
VOLSUN
The Flame Retardant PPS Rope for EV Winding represents a critical innovation in electric vehicle (EV) motor technology, providing superior thermal management and fire safety in high-performance winding applications. Constructed from polyphenylene sulfide (PPS) fibers, this advanced technical rope combines exceptional heat resistance with inherent flame retardancy, making it ideal for insulating and securing windings in electric motors and power electronics. Its unique combination of mechanical strength, chemical resistance, and dielectric properties addresses the demanding operational requirements of modern electric vehicles.
Composed of 100% PPS fibers, the rope achieves a UL 94 V-0 flame rating without requiring additional flame retardant additives . Its limiting oxygen index (LOI) of 50% exceeds industry standards for flame resistance, ensuring self-extinguishing behavior in fire conditions . The material maintains structural integrity during brief exposure to temperatures up to 260°C (500°F), providing valuable time for thermal runaway mitigation in EV systems.
Designed for continuous operation at 200°C (392°F), the PPS rope outperforms traditional insulation materials like polyester and nylon in high-heat environments . It exhibits minimal thermal shrinkage and retains 89% of tensile strength after 3 months of exposure to 93°C (200°F) conditions, ensuring long-term reliability in demanding motor applications .
The rope combines high tensile strength with excellent flexibility, facilitating easy handling and precise placement during motor assembly. Its low moisture absorption (<0.02%) ensures consistent dielectric performance in humid environments, with volume resistivity exceeding 10¹⁴ ohm·cm. The fiber structure provides effective electrical insulation between winding layers while allowing heat dissipation from copper conductors.
Category | Specification | Value | Test Method |
Thermal Properties | Continuous Operating Temperature | 200°C (392°F) | UL 746B |
Short-Term Exposure Temperature | 260°C (500°F) | ASTM D648 | |
Thermal Index | 240°C (464°F) | UL 746B | |
Flammability Ratings | UL Flame Class | UL 94 V-0 | UL 94 |
Limiting Oxygen Index | 50% | ASTM D2863 | |
Mechanical Properties | Tensile Strength Retention (3 months @93°C) | 89% | Internal Testing |
Moisture Absorption | <0.02% | ASTM D570 | |
Electrical Properties | Volume Resistivity | >10¹⁴ ohm·cm | IEC 60093 |
Provides insulation and spacing between winding layers in high-power traction motors, withstanding the elevated temperatures generated during rapid acceleration and regenerative braking cycles. Its flame retardancy enhances battery safety systems in the event of thermal runaway.
Used as insulation in inverters, converters, and battery management systems where high temperatures and electrical isolation are critical. The rope's chemical resistance makes it suitable for contact with cooling fluids and lubricants common in EV powertrains.
Insulates high-current conductors in fast-charging stations and on-board chargers, maintaining performance during extended operation at maximum load. Its fire resistance adds a safety layer in public charging facilities.
Adaptable to high-temperature industrial motor applications including servo motors, generators, and drives used in manufacturing equipment, providing longer service life compared to conventional insulation materials.
PPS offers a unique combination of high-temperature resistance, inherent flame retardancy, and chemical stability that addresses the key challenges in EV motor design . Unlike traditional materials, it maintains performance in the thermal cycling conditions typical of electric vehicles, reducing maintenance needs and extending motor life.
With its UL 94 V-0 rating and 50% LOI, the rope prevents flame spread between motor components during thermal events . It maintains structural integrity longer than standard insulation materials, providing critical time for vehicle safety systems to activate protective measures.
Yes, PPS is virtually impervious to all common automotive fluids including oils, coolants, and battery electrolytes . This chemical resistance prevents degradation that could compromise insulation performance or mechanical strength in EV powertrain environments.
The rope is manufactured in diameters ranging from 0.5 mm to 10 mm to accommodate various winding configurations. Custom lengths and braided constructions are available to meet specific motor design requirements, with minimum order quantities depending on specifications.
The Flame Retardant PPS Rope for EV Winding represents a critical innovation in electric vehicle (EV) motor technology, providing superior thermal management and fire safety in high-performance winding applications. Constructed from polyphenylene sulfide (PPS) fibers, this advanced technical rope combines exceptional heat resistance with inherent flame retardancy, making it ideal for insulating and securing windings in electric motors and power electronics. Its unique combination of mechanical strength, chemical resistance, and dielectric properties addresses the demanding operational requirements of modern electric vehicles.
Composed of 100% PPS fibers, the rope achieves a UL 94 V-0 flame rating without requiring additional flame retardant additives . Its limiting oxygen index (LOI) of 50% exceeds industry standards for flame resistance, ensuring self-extinguishing behavior in fire conditions . The material maintains structural integrity during brief exposure to temperatures up to 260°C (500°F), providing valuable time for thermal runaway mitigation in EV systems.
Designed for continuous operation at 200°C (392°F), the PPS rope outperforms traditional insulation materials like polyester and nylon in high-heat environments . It exhibits minimal thermal shrinkage and retains 89% of tensile strength after 3 months of exposure to 93°C (200°F) conditions, ensuring long-term reliability in demanding motor applications .
The rope combines high tensile strength with excellent flexibility, facilitating easy handling and precise placement during motor assembly. Its low moisture absorption (<0.02%) ensures consistent dielectric performance in humid environments, with volume resistivity exceeding 10¹⁴ ohm·cm. The fiber structure provides effective electrical insulation between winding layers while allowing heat dissipation from copper conductors.
Category | Specification | Value | Test Method |
Thermal Properties | Continuous Operating Temperature | 200°C (392°F) | UL 746B |
Short-Term Exposure Temperature | 260°C (500°F) | ASTM D648 | |
Thermal Index | 240°C (464°F) | UL 746B | |
Flammability Ratings | UL Flame Class | UL 94 V-0 | UL 94 |
Limiting Oxygen Index | 50% | ASTM D2863 | |
Mechanical Properties | Tensile Strength Retention (3 months @93°C) | 89% | Internal Testing |
Moisture Absorption | <0.02% | ASTM D570 | |
Electrical Properties | Volume Resistivity | >10¹⁴ ohm·cm | IEC 60093 |
Provides insulation and spacing between winding layers in high-power traction motors, withstanding the elevated temperatures generated during rapid acceleration and regenerative braking cycles. Its flame retardancy enhances battery safety systems in the event of thermal runaway.
Used as insulation in inverters, converters, and battery management systems where high temperatures and electrical isolation are critical. The rope's chemical resistance makes it suitable for contact with cooling fluids and lubricants common in EV powertrains.
Insulates high-current conductors in fast-charging stations and on-board chargers, maintaining performance during extended operation at maximum load. Its fire resistance adds a safety layer in public charging facilities.
Adaptable to high-temperature industrial motor applications including servo motors, generators, and drives used in manufacturing equipment, providing longer service life compared to conventional insulation materials.
PPS offers a unique combination of high-temperature resistance, inherent flame retardancy, and chemical stability that addresses the key challenges in EV motor design . Unlike traditional materials, it maintains performance in the thermal cycling conditions typical of electric vehicles, reducing maintenance needs and extending motor life.
With its UL 94 V-0 rating and 50% LOI, the rope prevents flame spread between motor components during thermal events . It maintains structural integrity longer than standard insulation materials, providing critical time for vehicle safety systems to activate protective measures.
Yes, PPS is virtually impervious to all common automotive fluids including oils, coolants, and battery electrolytes . This chemical resistance prevents degradation that could compromise insulation performance or mechanical strength in EV powertrain environments.
The rope is manufactured in diameters ranging from 0.5 mm to 10 mm to accommodate various winding configurations. Custom lengths and braided constructions are available to meet specific motor design requirements, with minimum order quantities depending on specifications.
