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China Suppliers Factory Semi-Conductive Cotton Tape for Enhanced Conductivity and Flexibility on Irregular Surfaces
Product Description
Semi conductive tape for cables plays an important role in cable manufacturing and maintenance. Its main characteristics and applications are as follows:
1. Characteristics
Semi conductive tape used in cables has a low electrical resistivity, which allows it to play a specific electrical role in the cable structure.
During the stretching process, the semi conductive tape can maintain its conductivity unchanged, which is a key factor in ensuring the electrical performance stability of the cable under different working conditions.
Semi conductive tape can maintain stable performance at overload temperatures (such as 130 ℃/266 ℉), which is crucial for the safe operation of cables in high-temperature environments.
It has good compatibility with various cable and conductor materials, and can tightly bond with the insulation layer to form a smooth interface.
Solvent resistance, UV resistance, and moisture resistance characteristics enable semiconducting tapes to maintain stable performance in various complex environments, extending the service life of cables.
2. Application
In cable manufacturing, semiconducting tape is commonly used for conductor shielding and insulation shielding. Its function is to improve the electric field distribution inside the cable, avoid partial discharge, and thus enhance the electrical resistance of the cable.
In power system maintenance, semiconducting tape is also commonly used for rapid repair of cables, such as solving repair problems of cable joints, terminals, shielding layers, and edges of semiconducting layers.
In high electric field environments, semiconducting tapes can evenly distribute electric fields and reduce electric field stress, thereby protecting cables from electrical faults such as electrical breakdown.
For certain specific specifications of cables (such as cables below 5KV), semiconducting tape can also be used to extend the shielding layer to meet specific electrical performance requirements.
3. Precautions for use
When using semiconducting tape, it is usually necessary to wrap it in a semi overlapping manner to ensure the continuity and stability of electrical performance.
During the wrapping process, it is necessary to fully stretch the semiconducting tape to ensure a tight fit with the cable surface and avoid the formation of bubbles or wrinkles.
Although semiconducting tape has the characteristics of solvent resistance, UV resistance, and moisture resistance, it is still necessary to avoid prolonged exposure to harsh environments during use to avoid affecting its performance.
Parameters
Common Specification Table
| Properties | Thickness (mm) | Grammage (g/m²) | Tensile strength (g/m²) | Elongation (%) | Surface resistance (Ω) | Volume Resistance (Ω.cm) |
|---|---|---|---|---|---|---|
| Single-layer | 0.25±0.03 | 230±20 | ≥100 | ≥12 | ≤1000 | ≤1X10⁵ |
| 0.3±0.03 | 250±20 | ≥100 | ≥12 | ≤1000 | ≤1X10⁵ | |
| Double-layer | 0.3±0.03 | 250±20 | ≥100 | ≥12 | ≤1000 | ≤1X10⁵ |
| 0.35±0.03 | 260±20 | ≥100 | ≥12 | ≤1000 | ≤1X10⁵ | |
| Support customizing other specifications | ||||||
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Frequently Asked Questions
Semi conductive tape is primarily used for conductor shielding and insulation shielding. It improves the electric field distribution inside the cable, reduces electric field stress, and prevents partial discharge, thereby enhancing the overall electrical resistance and safety of the cable.
Yes, the semi conductive tape features excellent heat resistance, allowing it to maintain stable performance even under overload temperatures of up to 130 ℃ (266 ℉).
No. One of its key features is conductivity stability, meaning it can undergo stretching during installation while keeping its electrical conductivity unchanged, ensuring stable performance.
It should be wrapped in a semi-overlapping manner. During wrapping, the tape must be fully stretched to ensure a tight, secure fit against the cable surface, avoiding any bubbles or wrinkles.
Yes, while standard single-layer and double-layer thicknesses range from 0.25mm to 0.35mm, custom specifications are fully supported to meet specific project and cable design requirements.