Custom wire harness fabricators in choosing which insulation materials to use

What kinds of insulating material wiring harnesses are used by custom wiring harness manufacturers in the selection of wiring harnesses? And what are the requirements of harness processing for harness insulation materials? Take a look at the performance and application range of PVC, PE, PP, XLPE, PU and TPE insulation materials in the wiring harness. PVC (our commonly used PVC wires are 1007 \ 1015 \ 1061, 1430, 1571)-PVC plastic is a multi-component mixed material based on PVC resin. According to the requirements of various wires and cables, plasticizers, stabilizers, fillers, flame retardants and processing AIDS (lubricants) are added to the PVC formula. Ultraviolet absorbers, colorants and special purpose additives are mainly used for insulation and sheathing (mainly 70, 80, 90 and 105 degrees). Basic judgment method: When burning, yellow flame, black smoke, green flame at the bottom, stench. PE (our commonly used 3266 \ 3385)-Polyethylene has excellent electrical insulation (dielectric constant and dielectric loss tangent tgδ are very small), good chemical stability, very low air permeability and small water absorption, small specific gravity, non-toxic, and good plasticity, easy to process and shape. It is mainly used for communication cable insulation. Basic judgment method: the surface is bright, when burning, the flame is yellow and blue, dripping, with a slight candle smell. PP-The appearance of polypropylene is white waxy solid, transparent, non-toxic, small water absorption, only 0.03-0.04%, flammable. The specific gravity is 0.91, which is the smallest of the commonly used plastics. Mainly used for core wire insulation. Basic judgment method: the surface is relatively smooth, compared with PE, harder, when burning, the flame is yellow and blue, dripping, there is a bad smell, and then there is a slight candle smell. XLPE/XL-PVC-Thermosetting material, mainly used for insulation, XLPE maximum temperature rating up to 150 degrees. Basic identification method: cut a section of wire to remove the conductor, burn it from the middle with fire, and then break the wire with force. The section is very round. PU-with good physical and chemical properties, it is often used for the sheath of connecting wires and spring wires of engineering machinery and other equipment. Basic identification method: magnetic, good elasticity, expansion and dripping when burning. TPE/PO (Thermoplastic Elastomer)-Low Smoke Zero Halogen flame retardant fuel.

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