In the modern automobile manufacturing process, whether it is a fuel vehicle or a new energy vehicle, the automotive wiring harness system carries the core task of the entire vehicle electrical transmission, especially automotive high-voltage wires, energy storage cables, thin-walled wires, etc. As the degree of vehicle intelligence continues to increase, the number and complexity of wiring harnesses also increase. In order to improve system stability and ensure the safety of the entire vehicle, the selection of high-performance cable sheath materials has become an inevitable trend. Flame-Retardant TPU (Thermoplastic Polyurethane) materials are gradually becoming an important choice in the field of automotive wiring harness sheaths due to their excellent comprehensive performance.
TPU materials can achieve good self-extinguishing properties after adding flame retardants. Even in the event of a high-temperature short circuit or external fire source, the outer layer of the wiring harness material can block the spread of flames in a very short time, significantly reducing the chance of fire. Compared with traditional PVC materials, flame-retardant TPU not only meets the UL94 V-0 level flame retardant standard, but also has long-term thermal stability, and can still maintain structural integrity in high temperature environments.
Automotive wiring harnesses are often faced with mechanical stresses such as friction and extrusion during assembly and use. Flame-retardant TPU has extremely strong wear resistance and tear resistance, which can effectively avoid internal cable failures caused by damage to the sheath. This material performs well under harsh working conditions, especially suitable for wiring harness layouts in engine compartments, high-temperature areas, and near moving parts.
Compared with other highly flame-retardant materials, flame-retardant TPU has good softness and resilience while maintaining flame retardancy. The wiring harness can be flexibly bent during installation to adapt to different structural spaces, reduce construction difficulty, and improve wiring efficiency. At the same time, this flexibility can also alleviate the stress concentration generated during the operation of the wiring harness, preventing early aging and breakage.
Modern automobile manufacturing has increasingly stringent requirements for material environmental protection. Flame-retardant TPU materials do not contain halogens, do not release toxic and corrosive gases when burned, and are more in line with international environmental standards such as RoHS and REACH. This not only helps automobile manufacturers to enhance their brand environmental protection image, but also provides convenience for later recycling and reuse.
Flame-retardant TPU materials can be adjusted according to different application scenarios, providing products with different hardness, color, flame retardant grade and temperature resistance to meet various wiring harness requirements from traditional fuel vehicles to new energy electric vehicles. Its highly customized characteristics provide more space for vehicle design while enhancing the safety redundancy of the wiring harness system.
As automotive electrical systems continue to upgrade, the performance requirements of wiring harness materials are also increasing simultaneously. Flame-retardant TPU materials are gradually replacing traditional materials and becoming the new mainstream of automotive wiring harness sheaths with their flame retardancy, mechanical strength, flexibility and environmental protection advantages. For automakers pursuing safety, durability and sustainability, flame-retardant TPU is undoubtedly an important choice for the future.
