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I am sure you would say think of the carbon material coal, but coal carbon material can be more than one kind of family. From graphite to diamond, from carbon fiber to carbon nanotubes, graphene from fullerenes to carbon material can be described as colorful extended family, all walks of life application of carbon materials. Elemental carbon material is the earliest human use, human use of carbon materials with the development of the history of human civilization, we recall past lives this carbon material.
Chinese people were the first use of carbon materials, from literature and archaeological point of view, no later than the Han Dynasty had coal. "Han. Geography ", said:" Yu Zhang County out of stone, combustible for pay "Yu Zhang County, Jiangxi Province, Nanchang in this neighborhood, referred to here as the salary combustible stone, in fact, coal. Coal has been used for the masses then seen daily lives. 18th-century Industrial Revolution, opened the era of industrial coal as fuel, until today coal is our most important source of energy, the national coal power generating capacity of 80% of the total.
Another carbon material exists in the form of diamond, India is the world's first discovery of diamonds, 3,000 years ago, India was the only origin of diamonds. Since 2500 years ago to the early 18th century India Krishna, Penner River and its tributaries is the world's only diamond output place, the history of many famous diamonds such as the Mountain of Light (kohi-noor), Orlov (orloff) and the great Mogul (great mogul) are from India, but India's diamond production is very small. To 1725 and the discovery of diamonds mined in Brazil, so Brazil to overtake India, became the most important producer of the world's diamonds. 1867 after the discovery of alluvial sand deposits in South Africa and a lot of native South kimberlite pipe makes the world's most important diamond producing countries, its long-term yields in the world, and thus opened a new era in the diamond industry. 1905, in South Africa's sub-Azar discovered the world's largest kimberlite Yanyan barrel - Puliemier Rock barrel and found the largest diamond (Cullinan diamond) here. South Africa has the world's largest production and the most modern Pooh Tia diamond mine.
Although the use of human carbon material is very early, but real human understanding of the carbon material is the recent 200-300 year thing. 1722, Rainey · Ruiou Mo discovered iron into steel process will absorb a substance, today people know that this is carbon. 1772, Anton Wan · Lavoisier proved that diamonds are entirely composed of carbon. He burned charcoal and diamonds, found neither produce water, carbon dioxide and the same quality of formation. It had been thought that graphite is a form of lead, but Carl Wilhelm Scheele proved its the same in 1779 and charcoal, but mixed with a small amount of iron and carbon dioxide will be released after nitric acid oxidation through. 1786, French scientist Claude Berthollet, Gaspar Monge and Funchal · Augustin · VANDERMONDE to Lavoisier on the method used to prove the diamond, graphite is also primarily composed of carbon. After leaving the burning graphite iron same, so they think are necessary in graphite iron structure. Lavoisier in his textbook in 1789 will be listed as carbon chemical elements. 1985, scientists discovered a new elemental carbon fullerenes, which include buckyballs, carbon nanotubes, and so on. Discoverer Robert Curl, Harold Kroto and Richard Smalley and therefore won the 1996 Nobel Prize in Chemistry.
Here is the introduction of a carbon fiber history, people always want to give the story of the important historical figures tall on the plate, carbon fiber appearance is no exception, and that is man's foes Edison invented the light bulb. Open contemporary history, we were surprised to find people looking for light bulb filament material than Edison a person, as early as 1860 the British had already started 约瑟夫斯旺 carbon wire as filament material, but failed to solve the poor Swann vacuum bulb problem, so the carbon filament will shine when oxidized in an oxygen environment, the lamp time is too short. After a year of carbon filament Edison solve problems but also solve the problem of vacuum, and patented the light bulb lit 45 hours (the present-defective products must be returned to the negative feedback, but then it has great significance ), but it is mankind enters the sign lamp era. This time the British Swann thoroughly disappointed, really should be a sentence: a loser for Kou is king, until today if we do not review the history of carbon fiber filament Swann to find the story may never filed, but we also applaud those who have made outstanding contributions not successful predecessors. This story seems to have a perfect ending, the hero of carbon filament first stage of history, and finally lived a happy life (hey, a little fairy tale ending mean). But grab a Cheng Yaojin, 1910 Coolidge invented the tungsten drawing method, so that the tungsten filament became the first candidate. Dim carbon filament had to leave, was abandoned in the corner, after four or five decades of time in limbo jealously guarding lonely, desolately sad.
1850s, carbon filament debut again, really admire the carbon filament endurance, estimated Zhen Huan also beats. The rescue carbon filament is Air Force base. At that time a bunch of grandchildren and Russians launched the space race, need to find a space shuttle ablative material, informed carbon melting point 3600 ℃, high temperature strength, so the carbon filament Please obediently back to the lab. After a series of studies, carbon filament and a grand return to the stage of history, this changed a mad cool hanging fried days drag name: carbon fiber. At the same time the American company Union Carbide UCC also entered the development ranks. 1959, the world's first listing of viscose-based carbon fiber Thornel-25 is the UCC's products. Tensile strength Thornel-25 only 1290MPa, modulus 175GPa. In the same year the Japanese invented by Akio Kondo PAN-based carbon fiber, which is what we call the PAN-based carbon fibers. Akio Kondo important contribution has two aspects, one can prove polyacrylonitrile manufacture carbon fiber, one draw polyacrylonitrile fibers can be carbonized to go through pre-oxidized into carbon fibers, laid the foundation for the route PAN carbon fiber. But Akio Kondo did not create a high-performance carbon fibers, because of his carbon fiber process line create crystal orientation disorder, this will in the future focus of our presentation. So in 1962 the Japanese company manufacturing PAN carbon fiber has not been successful, and the second year the British Watt improved the production process, in the pre-production process for raw silk yarn carbon oxygen tension applied to the filament, the crystal orientation is close to parallel axial carbon fiber, to obtain a high-performance carbon fibers. Thus PAN carbon fibers into high-speed development period, in 1965 the Japanese Otani fir Lang invented the pitch-based carbon fiber, and in 1970 began to commercialization, although pitch-based carbon fiber and no PAN-based carbon fibers are widely used, but in high modulus carbon fiber in the field or pivotal the. Toray companies in 1971 with the American company Union Carbide produced T300 carbon fiber, really let China shame, 30 years earlier than us. Toray thereby become the world's first carbon fiber manufacturer Toray is currently a global leader in the marketing of carbon fiber.
In 1972, the company began producing American Hercules PAN-based carbon fiber with carbon fiber fishing rod in Japan, the United States with a carbon fiber golf club
1973, the Japanese Toho Rayon company began producing PAN-based carbon fiber (0.5 tons / month) Toray company expansion 5 tons / month
1974, carbon fiber fishing rod, golf club rapid development of Japan's Toray expansion 13 tons / month
1975, the commercialization of carbon fiber tennis racket American UCC company announced mesophase pitch manufacture using high modulus pitch-based carbon fiber "Thornel-P" American UCC's performance commercialization of pitch-based carbon fiber
1976, Toho Rayon Company and the U.S. Seram Nice technical cooperation with the United States Hegelishi Sumitomo Chemical (Hercules) set up a joint company
1979, Japan Carbon Company and Asahi Kasei Corporation Founded sun carbon fiber
1980, Boeing raised demand for high-strength, high elongation of the carbon fiber
In 1981, the establishment of Taiwan's Formosa Plastics carbon fiber research center, Mitsubishi Rayon Company and the U.S. Hitco companies for technical cooperation
1984, Taiwan's Formosa and the United States Hitco companies for technical cooperation, Toray company successfully developed high-strength carbon fibers in the mold T800, strength of 5510MPa.
In 1986, the company successfully developed high-strength Toray carbon fiber in the mold T1000, strength of 7020MPa.
In 1989, the company successfully developed Toray high modulus carbon fiber M60 Strong
In 1992, the company successfully developed Toray high modulus carbon fiber Strong M70J, Young's moduli of up to 690GPa
China from the late 1960s started to develop carbon fiber, has over 30 years of history. 1976 Chinese Academy of Sciences Institute of Coal Chemistry built China's first PAN-based carbon fiber production line to expand testing, product performance basically reached Toray's T200, the country also known as high-strength carbon fiber type I. China from the "Plan" started to develop high-strength carbon fiber type II (equivalent T300), but after 20 years, the product performance standards have not yet reached the T300 is still in the pilot stage amplification. Experts believe that restricting the development of carbon fiber "bottleneck" is not really the quality of PAN precursor clearance. And on the international market a full range of commercial carbon fibers began in the 1970s, 1970s, the introduction and development of golf clubs and fishing rods application period, mainly in Japan. In the early 1980s, carbon fiber began to be widely used in aircraft and aerospace vehicles as a structural material, mainly used in Europe and North America. Then, people raise the awareness of carbon fiber, began to regard it as a kind of high-quality materials, and in the mid-1980s has been rapid growth. In the mid-1980s, Airbus began as a primary structural material CFRP applications on their aircraft, and, as in the application of carbon fiber, carbon fiber market and the new sport of tennis have the sword of steady expansion.
Although after the live 1991 Gulf War, the development of the aviation industry into recession, the global economy began to standstill, demand growth carbon fiber also tend to slow, white mid-1990s, the carbon fiber industry should begin to become the new demand growth. In particular, Europe and North America beginning on the carbon fiber used in the pressure vessel, this growth is very significant, because some areas of the earthquake in 1995, accelerated the demand for seismic retrofit applications. In the future, the main application areas are expected to focus on carbon fiber for industrial applications, and this demand will steadily increase. In addition, the new area of the space program and related applications under steam and will promote the industrial application of carbon fiber.
Our research started on the carbon fiber is not late, although there has been some progress, but over the years developed more slowly. According to the Shanghai Information Technology companies autumn engine governor studio founder Energy and Chemical Engineering Qian Bo Zhang introduced the sixties and seventies of the 20th century began to study our Shanghai Synthetic Fiber Research Institute, Chinese Academy of Coal Chemistry, Beijing University of Chemical Technology, Shandong industrial university, etc. , and in the mid-1980s by the pilot into the pre-production stage of industrialization, has built a small pilot plant with an annual output from a few hundred kilograms to several tons and an annual output of dozens of tons of the pilot plant. Overall, however, whether it is technology, production capacity and product quality so with foreign advanced level there is a large gap.
In the 21st century, the rapid development of domestic carbon fiber industry, Anhui, China Anhui carbon fiber first company to introduce an annual output of 500 tons of raw silk, 200 tons of PAN-based carbon fiber production plant, successfully fill our carbon fiber and raw silk Industrial production blank.
Since 2000, China's carbon fiber technology diversification to abandon the original raw silk manufacturing technology nitric acid method, using dimethyl sulfoxide as solvent-step wet spinning technique to be successful. Currently using technology developed by a small number of self-made carbon fiber products have reached the international level.
According to Qian Zhang Bo, in recent years, the relevant state ministries and commissions have the industrialization process of carbon fiber technology as a strategic task of China. Subsequently, a number of companies have joined the ranks of carbon fiber production. At present, China has Jilin Shenzhou carbon fiber company, Shandong Tiantai New Material Co., Jiaxing, Zhejiang Bao Carbon Fiber Co., Ltd., Baoding Swan Chemical Fiber Group Co., Ltd. Dalian Branch of carbon fiber, Shanxi Heng days Technology Co., Ltd. and other new textile fiber production various sizes of carbon fiber manufacturers, the total annual production capacity of 2310 tons. According to incomplete statistics, at present and in the construction of the proposed carbon fiber manufacturers have 11, the total annual production capacity of 7100 tons raw silk, carbon fiber 1560 tons, including in the construction business for four, the total annual production capacity of raw silk 1100 tons, 470 tons of carbon fiber.
In contrast, global, because the carbon fiber production process is complex, since the size of the business world is not more than 12. They were Japan's Toray, Toho and Mitsubishi Rayon, America's Cytec Industries Inc. (Cytec), heck Sale (Hexcel) company, Zoltek (Zoltek) company, Amoco (Amoco), Germany the SGL, South Korea and Thailand as well as light industry companies China Taiwan's Formosa Plastics Corporation. Where the leading Japanese manufacturer Mitsubishi Rayon, Toray and Toho and the United States Cytec, Hexcel Corporation.
In 2008, China started and implementation of large aircraft major projects supporting the overall project, including carbon fiber, including many new chemical materials projects, with the increase in the special as the representative of the country in various fields in demand for products of carbon fiber, a lot of carbon fiber research projects or kiloton industrialization projects have been started. However, due to the lack of carbon fiber industry with core industrialization technology with independent intellectual property rights, industrial development will not happen overnight, but the opportunity for development is up.
According to reports, from technology development to industrial transformation more difficult, so the carbon fiber to realize localization also requires a lengthy process. Due to market shortages in recent years, there has been domestic "carbon fiber heat." It should be pointed out that although the current domestic market for carbon fiber products in greater demand, but there is a big risk of blind development, these projects kiloton years after the implementation of market surplus will become inevitable.
According to the relevant department predicted that world demand for carbon fiber will be approximately 13% per year rate of rapid growth, in 2010, global demand for PAN-based carbon fibers will reach 50,000 tons, to reach 60,000 tons in 2012, demand is expected to 2018 will reach 100,000 tons.
To this end, the seven major manufacturers of carbon fiber (Toray, Toho and Mitsubishi Rayon, SGL, Hexcel, Cytec and Zoltek) has announced plans to expand production in the next three to five years 78% of the total investment amounted to 879.7 million euros. Experts expect the short term, the carbon fibers in short supply.
How in the supply exceeds the demand outlook, improved rapidly upgrade pace Chinese carbon fiber industry is in urgent need of our carbon fiber workers thought.
Yancheng Xiangsheng Carbon Fiber Technology Co., Ltd. specializing in the production of short carbon fibers are mainly used for: military use chopped carbon fiber construction with chopped carbon fiber, electric with chopped carbon fiber, shielding material chopped carbon fiber, insulation material chopped carbon fiber , sporting goods with chopped carbon fiber, household items with chopped carbon fiber.