Carbon Fiber Industry From Scratch To Achieve "Three Early"
Industrial production of carbon fiber "from scratch"
Carbon fiber is inorganic fiber material with carbon content of more than 90%, which is made from polyacrylonitrile, asphalt and other chemical materials as precursors, by pre oxidation and carbonization. Due to its characteristics of light weight, high strength, high temperature resistance, corrosion resistance, fatigue resistance, conductivity, heat conduction and other carbon materials, and at the same time, it has the softness and workability of fiber materials. Carbon fiber has been widely used in three major fields, such as aerospace, industrial application and sports leisure, and is one of the fastest growing materials in recent years.
Material is the basis and premise of equipment. There is a saying of "one generation of materials and one generation of equipment" in the industry. The research and development of carbon fiber in China started in the early 60s of last century. However, due to many reasons such as system mechanism, basic science, engineering technology, industrial equipment and so on, it has been stuck on the low performance carbon fiber level. The key technology of high performance carbon fiber industrialization has not been effectively cracked.
Since 2000, China has attached great importance to the development of carbon fiber. The key technology of carbon fiber was included in the national high technology research and development plan ("863" plan) and the "high performance polyacrylonitrile carbon fiber basic science problem" in fifteen. It was listed in the national "973" plan in 11th Five-Year. In 12th Five-Year, the strategic emerging industries plan made carbon fiber as one of the key points. The development and Reform Commission, the Ministry of science and technology and the Ministry of industry and commerce also increased support for the industrialization of carbon fiber.
Xu Lianghua, a researcher at the National Center for carbon fiber engineering and technology, School of materials science and engineering, Beijing University of Chemical Technology, believes that under the support of national policies, China's carbon fiber industry has developed greatly from scratch, industrial scale and technological level.
industry Progress to achieve "early three"
Vice president of China Chemical Fiber Industry Association Xiang Dong Zhao In recent years, the progress of China's carbon fiber industry can be summarized as "three early": one is to take shape, two is to go to the top level, and three is to meet the needs of national economic and social development.
Taking shape means domestic production. carbon fibre The scale of industrial production has become a reality. According to experts, at present, the key technology of the whole process of industrial production of T300 grade carbon fiber in China has basically achieved the breakthrough of localization, forming a technology of carbon fiber industrialization with high independent intellectual property rights, which has reached the capacity of scale production of thousand ton scale, and the product has partly replaced the import.
The initial level means that China has made breakthroughs in the research and development of the more advanced high-performance carbon fibers and industrial production. At present, China's T700 class carbon fiber has completed the construction process of the pilot and 100 ton lines in some areas and enterprises, and has initially realized industrialization, and is carrying out a high level industrialization production and construction. T800 grade carbon fiber has broken through the key technology of preparation, and is ready for entering the engineering stage. In addition, M50J high modulus carbon fiber has also broken through the key technology of development.
Domestic carbon fiber has already been able to meet the needs initially. The development of high-end carbon fiber products and composites is in line with the needs of the development of national defense science and technology industry. Whether we can continuously improve the level of China's national defense self-protection is an important symbol to measure the development level of carbon fiber industry. Our country uses nearly 10 thousand tons of carbon fiber every year, of which 2000 tons of domestic carbon fiber have been applied in the high-end equipment such as launch vehicles, satellites, large aircraft and so on.
With the rapid development of the carbon fiber industry, China has nurtured leading enterprises such as Jiangsu Heng Shen, Zhongfu eagle, Weihai development and other carbon fibers, forming the industrial cluster effect. Up to now, there are more than 30 carbon fiber production enterprises in China, and the production line has reached 20 thousand tons.
Xu Jian, an expert committee of the "863" plan expert committee and an expert advisory committee on the development of strategic emerging industries, said that China has already made relevant high-performance carbon fibers, but it has not solved the problem of comprehensive parallelism in terms of technology, technology and equipment. The real gap is ten years.
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