One, two layer co-extrusion and single layer of different structures

Double-layer coextrusion refers to the structure formed by the outer insulation layer on the basis of the inner insulation layer, which is often used in high-voltage power cables. The single layer has only one insulating layer, which is often used in low-voltage power cables. It can be seen that the difference between double layer coextrusion and single layer is the difference in the number of insulation layers, and double layer coextrusion generally has higher density and tensile strength.

Second, the application difference between double-layer co-extrusion and single-layer

Because of the different insulation characteristics and environmental requirements required by different cables, double-layer co-extrusion and single-layer also have different applications. Double-layer coextrusion is generally used in higher voltage cables, such as generators, transformers, and power transmission cables, while single-layer is commonly used in control cables, communication cables, automotive cables, and some low-voltage power cables.

Third, the advantages and disadvantages of double-layer co-extrusion and single-layer

1. The advantages of double-layer co-extrusion: because of the two layers of insulation, the double-layer co-extrusion cable has better anti-penetration performance and durability. At the same time, double-layer coextruded cables also generally have higher temperature and pressure tolerance, and are suitable for cable applications in high temperature and high pressure environments.

2. The disadvantages of double-layer co-extrusion: because its structure is more complex than that of a single layer, the cost is relatively high.

3. Advantages of single layer: single layer cable structure is simple, so the production cost is low, and the general reliability is high. Single-layer cable also has better mechanical properties, usually because of its overall structure is more compact, so it is not easy to aging and deterioration after a long time of use.

4. Single-layer disadvantages: Single-layer cables lack the protection of the outer insulation layer, so their resistance to wear and durability may be relatively poor.

In general, double layer coextruded and single layer are different forms of cable insulation material structure. Double-layer coextruded cables have higher penetration resistance and durability, while single-layer cables are simpler and have better mechanical properties. In practical applications, cable demand will be different due to different basic environment, power transmission requirements and economic cost considerations and other factors, so it is necessary to choose the appropriate cable insulation materials according to different needs.



Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable.