"China's cable industry, some high-performance materials still rely on imports, the key technology subject to the people, the overall level of the low end of the international industrial chain." Shanghai Cable Research Institute, deputy secretary Yu Shunkang in the "2013 China Cable Materials Conference" As the saying goes, China has become the world's largest cable power, but compared with world-class enterprises there is still a big gap. Although the output of many basic raw materials and products ranks among the highest in the world, some high-performance materials rely on imports .
Cable products with the structure and function of the distribution of materials can be divided into conductive materials, insulating materials, filler materials, shielding materials, sheathing materials. But some of these materials are common to several structures. In particular, thermoplastic materials such as PVC, polyethylene, etc. can be used on insulation or jacket simply by changing the composition of the ingredients.
As the market continues to raise the demand for cable materials and cable manufacturers to control costs, localization of cable materials and research and development of new materials, voices are rising. The good expectations of aluminum cable market for high-end cable materials industry put forward higher requirements.
According to statistics, during the 11th FYP period, China's new material industry has developed rapidly. In 2010, the scale of China's new material industry surpassed 650 billion yuan, an annual increase of about 20% over the previous period of the 11th FYP. "Twelve Five" new material output will reach 2 trillion yuan, an average annual growth rate of more than 25%. Among the six new types of materials that are key to supporting the development of planning, advanced polymer materials and high-performance fibers and composites have received much attention.
In fact, at present, there are about 300 domestic manufacturers of polymer materials for cables, mostly those with a sales income of 10 million yuan and about 20 companies with a sales income of more than 200 million yuan. The products of most domestic enterprises are common cable materials, and the product development capability is weak. The ordinary PVC insulation material is the main factor, and the profit mainly depends on cost control. Its downstream customers have weak technical strength and low market share.
However, enterprises with the characteristics of "technology efficiency" are fewer. Specifically, the current varieties of domestic wire and cable materials to reach more than 85% of foreign varieties, such as 35 kV below the cross-linked polyethylene insulation material has been completely localization, yield and quality have been guaranteed, supporting the shielding material inside and outside the semiconductor Also achieved localization. Silane cross-linked cable insulation material not only to achieve a two-step industrial production of products, also developed a one-step process of silane cross-linked cable insulation materials.
Overall, the gap between the level of development of China's wire and cable materials and advanced countries has been shortened, basically meeting the needs of domestic wire and cable products. However, the domestic cable manufacturers are limited, small and medium-sized enterprises, small-scale production, low investment in R & D costs, weak research and development capabilities, and relatively simple products. Therefore, the domestic cable manufacturers are less selective. And for some high-tech, high performance cable material research and development serious shortage, need to import. For example, with the accelerating construction of EHV in China, the market for EHV is promising. However, currently there are no domestically manufactures of cross-linkable PE cables that are daring to be used in high-voltage and ultrahigh-voltage cables and semi-conductive inner and outer shielding materials.
In Yu Shun Kang seems, should further shorten the gap between the three aspects of high-end cable materials and foreign countries. First of all, in order to achieve the optimization and upgrading of the industry technology and product structure, to enhance the value chain of the industry and to enhance the international competitiveness of the industry as the goal; second, the cable enterprises and research institutes to strengthen cooperation and seek "production, learning, research and use of" phase Combined with the development of new ways; once again, accelerate the new functional materials, high-performance structural materials and other fields of scientific and technological research, as soon as possible to form the world's advanced level of new materials and smart green manufacturing system.
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