Get Rid Of Carbon Fiber Development Dilemma &Nbsp; Recycling Is The Key.

A few days ago, Jiangsu Lianyungang Eagle Eagle Bicycle Co., Ltd. produced only 6 kilograms of carbon fiber bicycle with independent intellectual property rights. Its main raw material carbon fiber is provided by Zhongfu divine eagle carbon fiber limited liability company.

This bicycle has passed the European carbon fiber bicycle quality certification, the price is only the same kind of imported carbon fiber bicycle 1/3.

The first phase of the company's annual production of 100 thousand carbon fiber bicycles will start construction in the year.

Compared with ordinary bicycle, carbon fiber

Carbon fiber is closer to our daily life. This kind of fibrous carbon material is 100 times thinner than its hair. Its density is less than 1/4 of steel, but its tensile strength is 7~9 times that of steel. Its tensile elasticity is higher than that of steel. Its carbon fiber is lighter than aluminum and harder than steel.

Because of its light weight, the quality of CFRP is about 20% of that of steel, and even the strength and strength of similar steel can be achieved according to fiber grade and directivity.

In addition, carbon fibers are not rusty. The use of carbon fiber materials can significantly reduce the weight of products, thereby significantly improving fuel efficiency, and the production of aircraft and cars can save a lot of fuel.

Due to its high strength, high modulus, high temperature resistance, corrosion resistance, electrical conductivity and thermal conductivity, carbon fiber has become a new chemical material with two characteristics, namely carbon material, strong tensile strength and fiber softness and workability. It is a new generation of reinforced fiber.

At present, carbon fiber is not only widely used in aerospace and military industry, but also has huge application space in automotive components, wind turbine blades, nuclear power, oil drilling, sporting goods, carbon fiber composite core cables and building reinforcement materials.

Predicament: production technology is far behind developed countries.

Since the application of carbon fiber is related to national defense and military industry, the technology and production equipment of carbon fiber are strictly confidential.

Japan, the United States and other major production companies have long been highly confidential and unwilling to pfer high performance special raw silk production technology, nor do they sell high performance special precursor products, and the possibility of complete technology introduction is also very small.

According to He Fu, a researcher at Shanxi Institute of coal chemistry, Chinese Academy of Sciences, China has made breakthrough progress in the T300 general level industrialization. The 100 ton and 1000 ton carbon fibers have been put into production. The T700 level is undergoing pilot scale enlargement, and the T800 level is being developed in the laboratory.

At present, the quality of products of one or two units in China has exceeded T300 level performance index, reaching T400 level, and can be produced in small quantities.

This is in the 80s Japan Dongli company's carbon fiber research and development level.

Judging from the overall situation, China is currently in the pition period from T300 general level to high-performance T700 and T800.

But because of

Predicament two: small scale, quantity and multiple R & D

Our research on carbon fiber is not very late. Although some progress has been made, it has been developing slowly over the years.

According to Qian Bao Zhang Gao, founder of Jin Du energy and chemical engineering studio of Shanghai Qing Du information technology company, China started the research on PAN based carbon fiber in 1960s by the Institute of Applied Chemistry of the Chinese Academy of Sciences since 1960s, and a continuous pilot plant was completed in early 70s.

Later, the Shanghai synthetic fiber research institute, the Shanxi coalification Institute of the Chinese Academy of Sciences, Beijing University of Chemical Technology and Shandong Polytechnic University also began their research work, and passed the pilot test in the middle of 80s, and entered the industrialization trial production stage. A pilot plant with an annual output of several hundred kilograms to several tons and a pilot plant with an annual output of tens of tons were successively built.

But generally speaking, there is a big gap between the advanced level of technology and the level of production and quality.

Since entering the twenty-first Century, the domestic carbon fiber industry has developed rapidly. Anhui Hua Wan carbon fiber company first introduced the annual production capacity of 500 tons of raw silk and 200 tons of PAN based carbon fiber production equipment, and successfully filled the gaps in the industrialization production of China's carbon fiber and raw silk industry.

Since the beginning of 2000, China's carbon fiber has been diversifying towards technology, abandoning the original manufacturing technology of nitric acid precursor, and using one step wet spinning technology with two methyl sulfoxide as solvent.

At present, a few domestic carbon fiber products developed by independent technology have reached the international standard of similar products.

According to Qian Bozhang, in recent years, the relevant ministries and commissions of the state have taken the industrialization process of carbon fiber technology as a strategic task of our country.

Subsequently, some enterprises successively joined the ranks of carbon fiber production.

At present, there are different production regulations in Jilin, such as Shenzhou carbon fiber company, Shandong Tiantai new material Limited by Share Ltd, Zhejiang Jiaxing Zhong Bao Carbon Fiber Co., Ltd., Baoding Swan chemical fiber group, Dalian Xingke Carbon Fiber Co., Ltd., Shanxi Heng Tian Textile New Fiber Technology Co., Ltd.

In view of the complexity of the production process of carbon fiber, there are no more than 12 enterprises in the world.

They are Japan's Dongli, Toho and MITSUBISHI Liyang, Cytec, Hexcel, Hexcel, Zoltek, Amoco, SGL, Korea, Taiwan, Taiwan and so on.

Leading manufacturers include Japan's MITSUBISHI Liyang, Toho and Dongli, as well as Cytec, Hexcel and so on.

In 2008, a large number of new chemical material projects including carbon fiber were included in the overall supporting projects of major aircraft projects launched in China. The carbon fiber products and carbon fiber products in various fields in China have been increasing. Many carbon fiber research projects or 1000 ton scale industrialization projects have been launched.

However, because China's carbon fiber industry lacks the core industrialization technology with independent intellectual property rights, the development of the industry will not happen overnight, but the opportunity for development has arrived.

According to the introduction, it is more difficult to pform from technology research to industrialization. Therefore, it is still a long process to realize the localization of carbon fiber.

In recent years, due to market shortage, "carbon fiber fever" has appeared in China.

However, it should be pointed out that although the demand for carbon fiber products is large in the domestic market at present, there is great risk for blind development.

According to the prediction of relevant departments, the demand of world carbon fiber will grow at a speed of about 13% every year. In 2010, the global demand of PAN based carbon fiber will reach 50 thousand tons, and by 2012, it will reach 60 thousand tons, and the demand is expected to reach 100 thousand tons by 2018.

To this end, seven global carbon fiber manufacturers (Dongli, Toho, MITSUBISHI, Liyang, SGL, Hexcel, Cytec and Zoltek) have announced plans to expand 78% over the next 3~5 years, with a total investment of 879 million 700 thousand euros.

Experts predict that in the short term, carbon fiber will be in short supply, but supply will probably exceed demand by 2012.

Break through the road 1: clenching fists to form a resultant force

How to rapidly upgrade the pace of upgrading China's carbon fiber industry under the prospect of supply exceeding demand? Qian Bo believes that in the domestic constraints on the development of carbon fiber, the lag of PAN raw silk level is the bottleneck restricting the production level of carbon fiber, which not only affects the quality of carbon fiber dimension, but also affects its output, production cost and market competitiveness.

At present, China urgently needs to master high performance PAN based precursor production technology and seize market opportunities.

Under the premise of improving the production technology of carbon fiber, we should make breakthroughs in the manufacturing technology of PAN based raw silk as soon as possible, develop high-quality upstream production lines, ensure the stability of carbon fiber production and product quality, thus breaking the blockade and monopoly of foreign countries in key technologies.

To this end, the major scientific research institutions and enterprises should grasp their fist to form a resultant force so as to avoid repeated introduction and duplication of research.

Qian Bozhang suggested that the support of the state should be mainly focused on the establishment of a systematic research network with different needs, while increasing investment and tax and credit policies to encourage carbon fiber production enterprises, raw material production enterprises and powerful investment enterprises, especially for the pioneering enterprises.

Although China has clear planning and target tasks for the production of carbon fiber, the phenomenon of repeated introduction and repeated research is still very serious.

The state should focus on supporting several successful enterprises, vigorously cooperate, optimize the layout, integrate resources, cooperate in tackling key problems, prevent low-level duplicated construction and blind development, and achieve the goal of making more enterprises less detours and cost savings.

Make our country a country with independent control, independent ownership of technology and industrialization development.

Qian Bozhang also suggested that we should learn from the advanced experience of other countries, strengthen the close combination of production, teaching and research, establish relevant mechanisms, and upgrade the development of high performance fiber industry to the national strategic level, so that China's carbon fiber industry can develop rapidly and healthily.

Breakthrough Road two: focus on recycling

In recent years, foreign research and development of carbon fiber technology focused on improving performance and reducing costs.

According to the demand for the development of advanced composite materials market, Japanese Dongli company has decided to phase out T300 class carbon fiber, and focus on developing carbon fiber varieties with a tensile strength of 4000 to 5000MPa and a price equivalent to T300. At the same time, because of the high cost performance of large bundles of carbon fiber, large wire bundled carbon fibers have begun to develop, such as the latest development of T6005, T7005, T700G and so on.

In addition, some enterprises attach importance to the development of environment-friendly recycled carbon fibers.

Japan's Dongli, Tei and MITSUBISHI Liyang plan jointly launch large-scale production of recycled carbon fibers to promote the recovery and utilization of high-strength and lightweight materials.

Carbon fiber products are widely used in special fields, and their service life and renewal cycle are strictly required. A large number of abandoned carbon fiber products need to be dealt with urgently.

According to Japanese MITSUBISHI Liyang estimates, the world's discarded carbon fiber is about 10 thousand tons, up to 20 thousand tons in 2010.

With the expansion of carbon fiber production capacity and the increasing use of materials, the trend towards environmental friendliness requires enterprises to pay attention to the recycling and utilization of carbon fibers.

The developed countries have already started this work: the new technology developed by the German TITK Research Institute can obtain the carbon fibers of length 20mm or 30mm to 70mm from waste carbon fiber textiles without tear treatment. The INASMET pport safety agency in Spain has developed a new way of recycling and recycling carbon fiber epoxy resin composites by chemical and thermal treatment technology, and its recycling products can be used in general carbon fiber products.

In 2009, Dongli, Japan, MITSUBISHI and Li Yang set up a joint venture to recycle and recycle carbon fibers from aircraft and other equipment.

The annual output of recycled carbon fiber will increase from a few hundred tons to the world's largest production of 1000 tons.

At present, should China learn from the advanced ideas of foreign countries and incorporate the research and development scope in the recycling of carbon fiber? After all, standing on the shoulders of giants can help us see higher and farther.