With the implementation of major energy development strategies such as "West to East Power Transmission" and "North to South Power Transmission," China's cable industry is experiencing rapid growth. Industry experts predict that in the next five to ten years, driven by the long-term demand from ongoing urbanization and industrialization, the wire and cable sector will see an average annual sales growth of 4% to 8%. This growth is expected to continue steadily, but challenges remain.
One key issue facing the industry is the limitations of cables themselves, which can hinder future development. Waterproofing, while not a new concept, has become increasingly critical in various applications. Whether it's tunnels, bridges, roads, or even our homes, water resistance is essential. In recent years, home waterproofing has emerged as a new concept, closely tied to interior decoration. Waterproof materials are fundamental to renovation projects, and poor waterproofing can lead to structural issues and indoor pollution.
In residential settings, waterproofing primarily focuses on areas like kitchens, bathrooms, balconies, terraces, and damp walls. Improper waterproofing can cause leaks, mold, and other problems that significantly affect daily life. As living standards improve, homeowners are becoming more aware of the importance of effective waterproofing. However, the variety of available materials and inconsistent construction techniques still pose challenges for many families when selecting the right solutions.
Cables play a vital role in both daily life and industrial infrastructure. With the increasing use of underground power cables, the need for improved cable protection and quality control has never been greater. Quality management must be integrated throughout the entire production process, including operator self-inspection and cross-process checks. These measures are crucial for ensuring product quality and enhancing the economic efficiency of manufacturers.
Cable waterproofing methods are generally divided into two categories: longitudinal and radial. Longitudinal waterproofing often uses water-blocking yarns, powders, or tapes, which contain hydrophilic substances that expand upon contact with water, preventing moisture from spreading along the cable’s length. Radial waterproofing, on the other hand, is typically achieved through extrusion of HDPE non-metallic sheaths or the application of metal jackets via hot pressing, welding, or cold drawing.
When installing cables, their long-term performance should be a top priority. Since cables are often laid directly in the ground, the outer layer must provide strong protection. The cable core is usually wrapped with insulating tape, followed by mica tape to ensure compactness. Cable glands should be secured with multiple layers of tape, and proper environmental protection, such as epoxy resin treatment, should be applied. Before use, the material must be fully dried. A final layer of heat-shrinkable tubing can also be added for extra protection.
Tianjin Cable General Plant’s rubber and plastic cables are designed for long-term water exposure and high-pressure environments. They offer excellent electrical insulation and flexibility, making them suitable for submersible pumps, coal mines, underwater operations, and lighting systems. These cables use high-density plastic with built-in waterproof properties. In contrast, standard cables have limited water resistance, and while some use water-blocking tapes or gel-filled designs, they often come with higher costs, reduced electrical performance in wet conditions, and potential fire risks.
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