Jiangsu Aokai PTFE High-Temperature Tape for EV Charging System

Take a look at the PTFE high-temperature fabric manufacturer from Jiangsu Aokai New Materials. In the electric vehicle charging ports and the entire high-voltage charging system, PTFE high-temperature tape (also known as Teflon tape or PTFE adhesive tape) features high temperature resistance (up to over 260°C), superior electrical insulation, a low friction coefficient, chemical corrosion resistance, anti-adhesion and flame retardancy. With these comprehensive properties, it has become an indispensable key material.

In the high-voltage electrical system of electric vehicle charging ports, the core value of PTFE high-temperature tape lies in providing reliable electrical insulation, heat resistance protection and long-term durability for high-voltage wiring harnesses.

High-voltage Wiring Harness Wrapping & InsulationThe charging gun cable contains multiple strands of high-voltage wires that require dependable insulation protection. Boasting excellent electrical insulation performance (with a dielectric strength of 30-40 kV and high breakdown voltage) and the capability to withstand continuous high temperatures generated during the operation of high-voltage wiring harnesses, PTFE high-temperature tape is widely wrapped around the outer insulation layer of single high-voltage wire cores. It forms a robust insulating barrier and effectively prevents short-circuit risks.

Identification & Marking of High-voltage WiringTo meet the safety identification requirements for high-voltage components in electric vehicles, some PTFE high-temperature tapes are specially manufactured in striking orange, dedicated to marking high-voltage wiring of new energy electric vehicles (EVs). Meanwhile, such orange PTFE tape retains outstanding heat resistance, insulation, slippage resistance and chemical resistance.

Interlayer Protection for Charging Pile CablesIn the sophisticated structure of new energy vehicle charging pile cables, a wrapping layer of PTFE tape is arranged outside the rubber insulation layer of power wire cores and above the braided shielding layer of signal control wire cores, serving as a core protective barrier. Leveraging the high temperature resistance, insulation and chemical corrosion resistance of PTFE tape, this design ensures stable operation of cables under harsh charging conditions with long-duration and high-current output, avoids interlayer friction damage and improves overall safety performance.

Beyond high-voltage electrical insulation, PTFE tape also plays a vital role in resisting environmental erosion and mechanical wear. With an extremely low surface friction coefficient (approx. 0.1), it delivers excellent anti-adhesion and wear resistance. Charging gun cables are prone to friction with the ground or other components during dragging and handling. Wrapping PTFE tape around the root of charging ports and key cable parts can effectively reduce wear and friction noise, and extend the service life of cables. In addition, fabric-based sleeve covers provide soft wear-resistant protection, especially suitable for the root of charging interfaces.

From the core insulation and identification of high-voltage cables inside charging guns, interlayer protection of charging pile cables, to friction and mechanical protection under extreme working conditions, PTFE high-temperature tape, with its outstanding comprehensive performance, is one of the critical materials to ensure the safety, reliability and durability of electric vehicle charging systems.

The above content is provided by Jiangsu Aokai New Material Technology Co., Ltd.

If you need in-depth information on detailed parameters, application scenarios and customized solutions for our full range of products including PTFE high-temperature fabrics, PTFE high-temperature tapes, PTFE high-temperature mesh belts, seamless fusing machine belts, single-sided PTFE coated fabrics, high-temperature resistant conveyor belts and high-temperature resistant fiberglass fabrics, please feel free to contact us via the following methods:

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