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As the oldest type of cable, rubber insulated cable, from natural rubber to synthetic rubber, has a history of more than 100 years. In the meantime, natural rubber has been modified or synthesized with other chemicals to become synthetic rubber. Synthetic rubber or synthetic elastomer materials can also be made from other chemicals, which are superior to natural rubber and synthetic rubber. Different formulations of rubber, with different mechanical and physical characteristics. By adjusting the compound formula, cable products suitable for various environments can be manufactured. In particular, today's vigorous development of special cables, rubber cables have more important technical significance and market value, rubber insulated cables are still the highlight of investment.
Unique uses require unique cable products
As we all know, the application of wire and cable products is in every field of human existence. These fields involve all aspects of nature and human life, and thus the applied wire and cable are different. The wires and cables we often say, such as low-voltage building wires and power cables, are only a small branch of the wire and cable family. There are quite a few special-purpose cables that are not known. These special cable products, which we often call special cables, are the products that are currently advocating vigorous development. In these special products, a considerable part is rubber insulated cables. Those applications that require products that are cold-resistant, abrasion-resistant, scratch-resistant, oil-resistant, radiation-resistant, tear-resistant, and drag-resistant are only available with rubber-insulated cables. It is also the expansion of the field of human activity. The increase in the requirements for cable varieties has only advanced the advancement of cable technology, and at the same time rejuvenated the old rubber-insulated cable product. For example, special-purpose flexible cables for torsion, cold-resistant, and flame-retardant for wind power, which have characteristics of low-temperature torsion, moisture resistance, low-temperature resistance, salt spray resistance, ultraviolet rays, oil resistance, and soft mobility, are new type rubber cables that have emerged in recent years. Variety. These cables can be used in wind turbines, used as soft wires, control cables and data cables in the cabin, and used as cloth wires and power cables in the tower.
Unique cable product requires unique performance
As mentioned above, cables used in unique fields must have different properties. A cable cannot be used in various situations. In recent years, in addition to the most common cables for power tools, and with the expansion of the construction scale of industrial and mining companies such as shipbuilding, railways, mines and wind power, the demand for special performance cable products has been increasing, many of which are Rubber-insulated cables make companies that can only manufacture plastic cables exclaim. Some cable companies are still holding ordinary plastic cable products to try to persuade customers, the result is to hit the wall. For cable companies that want to expand their markets with product varieties, they should first understand the differences in the specific performance and application areas of various products, and develop new products based on their own plans. Rubber-insulated cables are special varieties of materials, processes, and properties that are different from those of plastic-insulated cables, and more than 90 percent of cable manufacturers do not have the ability to manufacture such products due to process equipment and technology. "Using plastic on behalf of rubber" is not the most technical choice In the 1970s, the world cable industry has risen to the "plastic-to-rubber" boom, replacing many of the original rubber insulated and sheathed cables with plastic insulation and sheathing. Among them, building wires and low-voltage power cables have been used successfully. In many fields of application, the application of plastic cables is not satisfactory. For example, the IEC has stipulated that replacing indoor and outdoor machine cables of air conditioners with rubber-insulated cables is a good example. Other areas such as construction machinery, ships, locomotives, traction equipment, rewinding devices, and port carrying equipment have basically discarded plastic insulated cables and rubber insulated cables. In the 110kV and above high-voltage cables, it is not only the use of cross-linked polyethylene insulated cables, the world also uses ethylene propylene rubber insulation, such as Italian Prism cable (formerly Pi Ruili cable company), ethylene propylene rubber insulated cable Already done 170 kV. Therefore, in today's technological innovation of wire and cable products, people's understanding of cable materials has begun to return to rationality, and "using plastics to replace rubber" is no longer a technology choice, and the importance of rubber-insulated wire and cable is increasingly evident.
Technological advances in equipment provide convenience for rubber cable innovation
Rubber-insulated cables must first be compounded, commonly referred to as "rubber", and must go through mixing, pressing, filtering, compressing, and depositing. Rubber processing equipment is large, complex and energy-intensive. In addition to the main rubber, in addition to the main rubber, it is necessary to add more than ten kinds of functional auxiliaries and fillers, most of which are powders, such as vulcanizing agents, softeners, calcium carbonate, talc and carbon black, and dust. The pollution is serious, the operating environment is harsh, and the raw material storage takes up a lot of space and the powder weighing is cumbersome. The old type of rubber processing equipment was rather heavy and complicated to operate. In the past ten years, the structure, performance, operation and working environment of rubber processing equipment and continuous extrusion and vulcanization units have been greatly improved. Compared with old equipment, it is no longer the same. The technological advancement of equipment not only eliminates people's "fear" of rubber processing equipment, but also provides convenience for the innovation of rubber cable products. It is easier to develop cable products with different structural performance and meet the needs of different uses.