What are the characteristics of automotive wiring harness outer cover

Now A commonly used automotive wiring harness is ul wiring harness processing, it is widely used in various places, life or work are used, automotive wiring harness outside the structure and what are the characteristics of it? Automotive wiring harness can be roughly divided into the following points: 1, with a good tensile strength of the elongation of the characteristics of the insulating coated materials guessing that the strong toughness and abrasion resistance, corrosion resistance of the A materials. Automotive high-voltage wiring harness with people's comfort, economy, safety requirements continue to improve, the types of electronic products in the car is also increasing, the automotive wiring harness is more and more complex, the failure rate of its wiring harness is also increased accordingly. 2, followed by the increase in density, the softening temperature increases, tensile strength, elongation decreases, the softness of the loss of gradual, strong toughness increases, the impact strength of the gradual decrease. pe because of low dielectric constant and high insulation material guess the toughness and wear resistance, corrosion resistance A material. Because of its low dielectric constant and high insulation impedance characteristics, so its electrical function is very superior, often used for coaxial line (coaxial cable) or high frequency materials. Weaknesses are: flammability, and A implementation of the temperature at 80 ℃. 3, pvc specific gravity of about 1.4. Automotive high-voltage wiring harness with people's comfort, economy, safety requirements continue to improve, the types of electronic products on the car is also increasing, automotive wiring harnesses are more and more complex, and the failure rate of its wiring harness is also increased accordingly. New Energy Vehicle Wiring Harness Wiring harness on each end will be marked numbers and letters to indicate the connection object of the wire, the operator sees the sign can be correctly connected to the corresponding wires and electrical devices, which is particularly useful in the repair or replacement of the harness. Surface is white powder. Excellent resistance to water, acid and alkali, flame and electrical insulation. It is also resistant to oil, ozone, and chemicals, and is non-toxic. Therefore, it is adopted as the material for cable insulation and covering. But pvc belongs to A material, dielectric properties are poor, so generally limited to 600v pvc wire, communication bureau wire, and cable covered pvc in 65-85 ℃ softening, 120-150 ℃ has complete plasticity 190 ℃ or more than the intense decomposition. Release hydrochloric acid gas, so its processing A suitable temperature range of about 150-180 ° C. 4, high tightness, injection molding is easy to shrink, automotive wiring harness has good electrical properties, water resistance, abrasion resistance, chemical resistance, good, important for the telephone and communication cable insulation materials.

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