Recently, China's first kilometer-class second-generation high-temperature superconducting tape in Shanghai Superconducting Technology Co., Ltd. is located in Fengxian industrial area within the superconducting production workshop officially off the assembly line, which is the first single root length The second generation of high temperature superconducting tape up to 1000 meters marks another big step towards the industrialization of China's HTS technology. Shanghai high-temperature superconducting tape industry took the lead in the country force In the third quarter of 2011, the company was founded. At the end of 2012, the self-design and processing of the clean-room decoration and production equipment was completed. In May 2013, the second-generation high-temperature superconducting wire production line with independent intellectual property rights was completed in China. After 60 days of system commissioning And tackling the battlefield challenge in Shanghai, this piece of land in China's most powerful economic development to achieve the trial production of kilometer strip. In less than 2 years, Shanghai Shangda Superconducting Co., Ltd has finished the road of high temperature superconducting tapes industry that the developed countries such as the United States, Japan and Germany have ten years to go. Professor Cai Chuan-bing, Technical Director and Director of the Superconductivity and Applied Technology Research Center of Shanghai University, recently issued the "strongest voice" of the rapid development of China's superconducting industry at the European Conference on Applied Superconductivity held in Italy. In fact, "Western powers" were surprised Endless. Xue Hua, general manager of the company excitedly told me that the Chinese dream of high-temperature superconducting industry, along with this long second-generation high-temperature superconducting tape was released, getting closer and closer to reality. High-temperature superconducting material in the end why? Cai Chuan-bing can be described as numerous household items. The transnational technical expert who actively promoted the transformation of university's scientific and technological achievements into enterprises exudes the passion of entrepreneurs and still carries the scholar's elegance. He has been engaged in high temperature superconducting materials research in the Microsystems Institute of Chinese Academy of Sciences (formerly Shanghai Institute of Metallurgy, Chinese Academy of Sciences), Osaka University, University of Birmingham, UK and Leibniz Institute in Germany. In 2005, he was the first "Pujiang Talent Project" Support the introduction from overseas and set up "Superconductivity and Applied Technology Research Center" in Shanghai University. According to him, high temperature superconducting material refers to the oxide superconducting material with zero resistance effect under the condition of low liquid nitrogen temperature. With its unique zero-resistance characteristics, it can realize high-current transmission without loss and its current carrying capacity per unit area is 150 times that of conventional copper and aluminum wires. It is widely used in many fields such as electric power, electronics , military and medical fields. From the first discovery of superconductivity in 1911 to 1985, superconducting materials are all metals or alloys that work only in liquid helium, commonly referred to as cryogenic superconducting materials or conventional metallic superconducting materials. In 1986, scientists began to touch the oxide ceramic material perspective, superconducting transition temperature exceeds liquid nitrogen temperature, these materials are called high-temperature superconducting materials. In fact, the high temperature is only relatively speaking, its temperature is still below minus 196 degrees Celsius, but due to the running medium from the scarce liquid helium, can be converted to liquid nitrogen everywhere, the use of costs dropped, adiabatic insulation conditions are easier to provide and security . At present, high temperature superconducting materials have been developed to the second generation. Cai Chuanbing said that the first generation of high temperature superconducting tape in the Bi-based oxide high temperature superconductor powder prepared using the traditional drawing process is derived, its liquid nitrogen temperature region of the irreversible field is low, AC loss, difficult to meet the exchange of transmission and Strong magnetic field application requirements; the same time, the production process can not be separated from the precious metal silver, making it difficult to reduce the cost of the market can not be large-scale promotion. The second generation of high temperature superconducting tapes is based on the thin film epitaxy technology on the metal base tape, making high temperature superconductivity possible for a wide range of applications in power engineering. Even more valuable is its availability in inexpensive Ni or Ni-based alloys, General stainless steel strip through the appropriate buffer layer epitaxial growth, the material cost is much lower than the first generation, with a very high price, is expected to soon be able to reach the current conventional copper and aluminum wire, even the conservative power companies It is difficult to resist the temptation of energy saving and efficiency. It is understood that since the late 90s of last century, the United States, Japan and other countries have made great breakthroughs in the industrialization of high temperature superconducting materials technology and soon into the commercial stage. The core of a typical high-temperature superconducting tape is a yttrium barium copper oxide superconducting layer. On the creation of superconducting kilometer-class strip using a low-cost chemical process route. The world-renowned American Superconductor Corporation formally adopted chemical solution coating technology to realize the market-oriented production of large-scale second-generation high-temperature superconducting tapes and became the largest superconducting tape supplier in the world. In the 21st century, with the developed countries such as the United States, Japan, Germany and South Korea successively realizing the industrialization of high-temperature superconducting tapes, a series of large-scale superconducting demonstration projects for smart grids are emerging and large-scale popularization is coming soon. The responsible person of the relevant office of Shanghai Economic and Trade Commission said that in order to strengthen the ability of independent innovation, seize the technological commanding height, national strategic needs and local economic innovation and transformation, it is in urgent need of relevant domestic units to develop low-cost, high-quality second generation high temperature Superconducting tape, and to achieve mass production, and then developed superconducting cables, superconducting motors, superconducting current limiter, superconducting transformers , superconducting imagers and other applications. It is based on this, a superconducting company surfaced. After returning from Germany in 2005, Cai Chuanbing set up a research team in Shanghai University and successively presided over major scientific research tasks such as "863" national key scientific and technological project of Shanghai Municipality. The team mastered the technology and equipment technology of high-temperature superconducting materials with independent intellectual property rights and established a unique low-cost technical route. A series of studies have been made on the pinning and thickness effects of new high-efficiency buffer layers and superconducting layers Results. However, how to make the research results within the school into market-oriented products requires the cooperation of capital and the investment of entities. At this time, Cai Chuan-bing's old friend, has been quietly concerned about the development of the domestic superconducting Xue Xue, and stood with him. Xue Hua Shi not only owns the Shanghai Institute of Metallurgy, Chinese Academy of Sciences Ph.D., as well as in the oil Shanghai Branch of many years of management experience. Cai Chuanbing responsible for the technology, Xue Hua is responsible for funding, China's superconducting industry was born a pair of gold partner. At the beginning of 2011, under the all-out effort and guidance of Shanghai Science and Technology Commission and Shanghai University, this gold partner planned the first superconducting company dedicated to the industrialization of HTS tape in Shanghai. Through technology transfer, Shanghai University Asset Management Co., Ltd. invested intangible assets into a superconducting company, accounting for 30% of the company's shares. Under the leadership of Xue Huashi, Shanghai Huiyang Superconducting Materials Co., Ltd. invested 70% of the company's cash. HTS will set off a power technology revolution According to the US Department of Energy's forecast, with the maturity of the second-generation high-temperature superconducting tape preparation technology, its price performance ratio will drop significantly in the next few years and will eventually be lower than the price-performance ratio of copper. Just as semiconductors bring the information age, optical Fiber brings the age of communication. High-temperature superconducting materials will fundamentally change human's way of using electricity and bring revolutionary technological progress to electric power, energy, transportation and other fields. Xue Hua said that the world's major developed countries have regarded superconducting power technology as a high-tech economy with strategic significance. The U.S. Department of Energy believes that superconducting power will be the only high-tech reserve in the power industry in the 21st century. Japan believes that the development of high-temperature superconducting power technology is the key to maintaining cutting-edge advantages in high-tech competition in the 21st century. In China, "National Medium and Long-term Scientific and Technological Development Plan" (2006-2020) established HTS as one of the cutting-edge technologies for new materials. Cai Chuan-bing said that the superconducting power Polypropylene Fiber,Pp Fiber Grade,Pp Polypropylene Fiber,Pp Fiber Polypropylene Puyang Ruidaxu New Materials Company Ltd , https://www.pyruidaxu.com
November 30, 2023