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Three minutes to understand the material of the cable sheath

The cable sheath is the outermost layer of the cable, as the most important barrier to protect the safety of the internal structure of the cable, and protects the cable from mechanical damage during and after installation. Cable sheaths are not intended to replace the reinforced armor inside the cable, but they can provide a fairly high level of protection with limited means. In addition, the cable jacket also provides moisture, chemical, ultraviolet and ozone protection. So, what are the materials for the cable sheath?

1. Cable sheath material: PVC

The cable material is made of polyvinyl chloride as the basic resin, adding stabilizers, plasticizers and additives such as calcium carbonate and other inorganic fillers, additives and lubricants, and then mixing, kneading and extruding particles.

Polyvinyl chloride can be formulated to be used in various environments and applications. It has low cost, good flexibility, quite strong, and has fire/oil-proof materials.

However, this material contains substances harmful to the environment and the human body, and there are many problems when applied to special environments. With the enhancement of people's awareness of environmental protection and the improvement of material performance requirements, higher requirements are put forward for PVC materials.

2. Cable sheath material: PE

Due to its excellent electrical insulation properties and good processing properties, polyethylene is widely used as a coating material for wires and cables, and is mainly used in the insulation and sheath layers of wires and cables.

Excellent electrical performance and extremely high insulation resistance. Polyethylene can be hard and very hard, but low-density PE (LDPE) is more flexible and has excellent moisture resistance. Properly formulated PE has excellent weather resistance.

The linear molecular structure of polyethylene makes it extremely easy to deform at high temperatures. Therefore, in the application of PE in the wire and cable industry, the polyethylene is often cross-linked to make the polyethylene into a network structure, making it strong at high temperatures. Anti-deformation ability.

Cross-linked polyethylene (XLPE) and polyvinyl chloride (PVC) are both used as insulation materials for wires and cables, but XLPE wires and cables are more environmentally friendly than PVC wires and cables, and they have better performance.

3. Cable sheath material: PUR

PUR cable is one of the cables. The material of PUR cable has the advantages of oil and wear resistance, while PVC is made of ordinary materials. In the cable industry in the past few years, the position of polyurethane has become increasingly important. At a certain temperature, the mechanical properties of this material are similar to those of rubber. The combination of thermoplasticity and elasticity results in TPE thermoplastic elastomer.

Widely used in industrial machinery and equipment, transmission and transmission control systems, various industrial sensors, testing instruments, electronic appliances, household appliances, electromechanical, kitchen and other equipment, used in the power supply and signal connection of occasions such as harsh environment and oil-proof.

4. Cable sheath material: TPE/TPR

Thermoplastic elastomers have excellent low-temperature properties without the capital required for thermosetting materials. It has good chemical and oil resistance, and is very flexible. Good abrasion resistance and surface texture, but not as durable as PUR.

5. Cable sheath material: TPU

Polyurethane cable refers to a cable that uses polyurethane material as insulation or sheath. Its super abrasion resistance refers to the super abrasion resistance of the cable sheath and insulation layer. The polyurethane material used in the cable is generally called TPU, which is a thermoplastic polyurethane elastomer rubber. Mainly divided into polyester type and polyether type, hardness range (60HA-85HD), wear resistance, oil resistance, transparency, good elasticity, TPU not only has excellent high wear resistance, high tension, high tensile strength, toughness and It is resistant to aging and is a mature environmentally friendly material.

The application fields of polyurethane sheathed cables include marine application cables, industrial robots and manipulator cables, port machinery and gantry crane cables, and mining engineering machinery cables.

6. Cable sheath material: Thermoplastic CPE

Chlorinated polyethylene (CPE) is usually used in very harsh environments. It has the characteristics of light weight, very hard, low friction coefficient, good oil resistance, good water resistance, excellent chemical resistance and UV resistance, and low cost.

The above is the whole content of the materials of the cable sheath. This is cable knowledge from Henan Tano Cable Co.,Ltd. I hope it will helpful to you.
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