What material selection should be paid attention to for automotive wiring harnesses?

　　As the neural network of automobiles, the selection of materials for automotive wiring harnesses has a significant impact on the performance, safety, and service life of vehicles. When choosing automotive wiring harness materials, the following aspects need to be considered:

　　1、 Electrical connection materials

　　Wire material

　　Copper wire: Copper wire is widely used in traditional fuel vehicles due to its good conductivity and stability. Copper wire has high conductivity, which can provide better conductivity and reduce distortion and attenuation during signal transmission. Meanwhile, copper wire is resistant to oxidation and corrosion, making it suitable for use in harsh environments.

　　Aluminum wire: With the increasing awareness of environmental protection and energy conservation, aluminum wire is becoming more and more widely used in new and electric vehicles due to its lightweight and cost advantages. Aluminum wire has a low density and light weight, which helps to reduce the overall weight of the car and improve fuel economy. At the same time, the thermal expansion coefficient of aluminum wire is relatively small, making it less prone to breakage during use and reducing the possibility of malfunctions.

　　Terminal material

　　A terminal is a hardware component commonly made of copper, which is crimped onto a wire to achieve the function of connection and signal transmission. There are various types of terminals, including ring terminals, nut shaped terminals, female terminals, male terminals, and sleeve terminals.

　　2、 Protection and covering materials

　　Adhesive tape

　　Tape is mainly used to wrap around the surface of wire harnesses to prevent exposed wires and provide protection. According to the material, adhesive tape can be divided into PVC tape, cloth tape, fiber adhesive tape, paper tape, etc. PVC tape has the characteristics of acid and alkali resistance, UV resistance, and wear resistance, but its applicable temperature range is relatively narrow; TPE tape has the characteristics of low temperature resistance, abrasion resistance, aging resistance, good flexibility, and excellent waterproof and oil resistance, which is suitable for various complex and changeable automotive applications.

　　Pipeline

　　Pipelines such as corrugated pipes, PVC pipes, etc. are used to wrap and protect wire harnesses, preventing damage from external factors. These pipeline materials need to have good wear resistance, corrosion resistance, and certain flame retardant properties.

　　Sealing components

　　Seals are mainly used for sealing wire harnesses to ensure waterproof and dustproof performance at connections. Common types of seals include blind plugs, blind plugs, and seals.

　　3、 Fixed and positioning materials

　　The selection of materials such as brackets (cable trays) and positioning components (such as staples and zip ties) must ensure the stable fixation and reasonable layout of the wiring harness in the vehicle, in order to reduce damage to the wiring harness caused by vibration or collision.

　　4、 Other considerations

　　High temperature resistance: For wiring harnesses that need to work in high temperature environments, such as those in the engine compartment, high-temperature resistant materials such as PUR or cross-linked high-temperature cables should be selected.

　　Cost: While meeting performance requirements, it is also necessary to consider the cost of wire harness materials to control the manufacturing cost of the entire vehicle.

　　Environmental friendliness: With the increasingly strict environmental regulations, choosing wire harness materials with good environmental friendliness is also one of the factors that car companies need to consider.

　　In summary, the selection of automotive wiring harness materials needs to comprehensively consider multiple aspects such as conductivity, stability, lightweight, cost, high temperature resistance, and environmental friendliness. Car companies should choose appropriate wire harness materials based on the specific application scenarios and technical requirements of the vehicle model to ensure its performance and safety.