In power transmission systems, cable accessories, though less conspicuous than the main cable, are a crucial component ensuring safe power transmission. The performance of cable accessories largely depends on their core material—silicone rubber. Today, we'll delve into a silicone rubber product specifically designed for cable accessories, exploring how its superior performance strengthens the safety of the power system.
This cable accessory uses silicone rubber with a precisely designed hardness—60-70 Shore A. Some may wonder what the secret lies behind this hardness value. In fact, this hardness range is the "gold standard" verified through countless practical tests. Materials that are too hard lack flexibility and are prone to cracking due to slight deformation during cable installation or operation, leading to decreased insulation performance; materials that are too soft cannot support the structure and are easily damaged by external pressure.A Shore A hardness of 60-70 ensures that the silicone rubber possesses sufficient structural strength to withstand minor impacts and pressure during daily installation and use, while also retaining appropriate flexibility to accommodate the slight deformation of cables during operation, preventing damage due to excessive rigidity. This achieves a perfect balance between practicality and adaptability.
Besides its precise hardness, excellent flowability is another major highlight of this silicone rubber. In the production of cable accessories, different types of accessories require different molding processes, and this silicone rubber can easily adapt to three mainstream processes: high-pressure injection molding, compression molding, and extrusion molding. During high-pressure injection molding, it can smoothly fill every tiny gap in the mold, accurately replicating the complex structure of the accessory and ensuring product dimensional accuracy. During compression molding, it can be evenly distributed within the mold, ensuring consistent density throughout the accessory and improving overall performance.During extrusion molding, stable flowability ensures a smoother production process, effectively reducing issues such as air bubbles and material shortages. This strong process adaptability eliminates the need for frequent raw material changes, significantly improving production efficiency and guaranteeing high-quality production of various types of cable accessories.
As a medium- and high-voltage insulating silicone rubber, its electrical performance is undoubtedly its core competitive advantage. In power transmission, insulation performance is crucial to preventing leakage and short circuits. This silicone rubber possesses excellent electrical properties, enabling it to stably perform its insulating function under medium- and high-voltage environments, effectively blocking current leakage and ensuring the safety of power transmission. Even during long-term use, facing complex conditions such as changes in electric field and temperature fluctuations, its insulation performance does not easily degrade, maintaining a stable state. This provides solid support for the long-term safe operation of cable accessories and reduces the risk of power accidents caused by insulation failure.
Furthermore, this silicone rubber also possesses anti-pollution and anti-aging properties, which are crucial for cable accessories used outdoors or in complex environments. Outdoor cable accessories are exposed to the air for extended periods, facing the corrosive effects of pollutants such as dust, oil, and rainwater. If the material's anti-pollution capabilities are insufficient, pollutants will adhere to the surface or penetrate the interior, gradually damaging the insulation performance. At the same time, natural factors such as ultraviolet radiation and temperature fluctuations will also accelerate material aging and shorten the service life of the accessories.The anti-fouling properties of this silicone rubber effectively resist the invasion of various pollutants, maintaining surface cleanliness and internal structural stability. Its anti-aging capabilities ensure that it maintains excellent physical and electrical properties even in harsh environments over long periods, significantly extending the service life of cable accessories and reducing subsequent maintenance costs.
Its excellent weather resistance allows this silicone rubber to "cope with ease" in various environments. Whether in the scorching heat of summer or the frigid cold of winter, whether in the rainy and humid south or the dry and windy north, it maintains structural stability without cracking, deformation, or hardening. Even in areas with large diurnal temperature variations and variable climate conditions, its performance is not significantly affected, ensuring that cable accessories function normally in various climatic environments and safeguarding the stability of power transmission.
In terms of application scenarios, this silicone rubber is widely used in the field of medium and low voltage cable accessories, especially in the production of cold shrink terminals and sheaths. Cold shrink terminals are important connection components of cable lines, directly related to the insulation and sealing of the cable ends; sheaths are responsible for protecting the internal structure of the cable and resisting external damage. Thanks to its excellent performance, the cold shrink terminals produced by this silicone rubber can fit tightly to the cable, achieving reliable insulation and sealing; the produced sheaths provide robust protection for the cable, effectively extending the overall service life of the cable and providing strong support for the safe operation of medium and low voltage power transmission systems.
