The charging pile cable is a bridge connecting the pile and the vehicle, and its performance is very important. In addition to the basic outdoor performance of the cable such as insulation and flame retardancy, the overall hardness of the cable should not be too high. The so-called charging pile cable materials generally refer to elastomer-related materials used for the insulation layer and outer layer. The material properties require oil resistance, tear resistance, weather resistance, chemical resistance, high and low resistance, etc. Heat resistance and softness, currently, TPU, TPE and PVC elastomers are the mainstream.

Among them, TPU is characterized by high strength and good wear resistance. These two points cannot be replaced by other TPE materials. The wear resistance and strength performance of TPU are much better than TPE, but the touch is not as good as TPE. Currently, the softest hardness of TPU is about 55A and above.

The main features of TPU are a wide range of hardness. As the hardness increases, the product still maintains good elasticity and wear resistance, high mechanical strength, excellent cold resistance, good processing performance, oil resistance, water resistance, mildew resistance, and recyclability. Good elasticity. Compared with TPU, TPE has a large elastic loss under high hardness.

TPE is the abbreviation of Thermoplastic Elastomer, which means thermoplastic elastomer. It is a special functional material with both plasticity and rubber elasticity. It is environmentally friendly, non-toxic and safe through injection molding, has a wide range of hardness, has excellent colorability, touch, weather resistance and fatigue resistance, and can reduce costs by recycling heat resistance.

With the increasing awareness of environmental protection, relevant environmental regulations such as EU RoHS standards and REACH regulations are gradually being implemented in the electronic and electrical field. In many cases, thermoplastic flame retardant safe and clean wire rubber has become the focus of research and development. The developed cable uses fully plastic TPE halogen-free flame retardant cable material with high performance.

SEBS-based TPE materials have low strength, are easy to precipitate, have low resilience, and have poor weather resistance and fatigue resistance. In addition, a large amount of inorganic flame retardants are added to improve the flame retardancy, and they are prone to dripping and smoke when burning. This overall decline in performance affects the service life and operational safety of the product, and also limits the application of low-smoke halogen-free flame-retardant TPE materials, especially in the field of electronic and electrical connecting wires. New energy charging pile cable materials.

At present, most insulation and protective materials for automotive wiring harnesses below 105°C are PVC materials. However, PVC materials used in domestic automotive wiring harnesses often have shortcomings such as frosted extrusion surfaces and poor low-temperature performance. In the special environment where automotive wiring harnesses are used (such as small space, poor heat dissipation, frequent mutual friction, etc.) and special requirements (thin walls, high-speed extrusion, etc.) and cost control requirements, automotive wiring harnesses are being studied, and it is necessary to further improve performance.

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