On the morning of July 11, the 5,000-ton 8K large-fibre tow carbon fiber production line invested by SHSH Carbon Fiber Technology Group was officially put into production.
The 48K large tow carbon fiber precursor independently developed by SHSH Carbon Fiber Technology Group passed carbonization and continued mass production. The carbonization effect exceeded expectations, and all carbon fiber indicators exceeded the T300 level after testing. SHSH truly produced the first batch of 48K large tow carbon fiber in the industrial sense.
Carbon fiber, which is only one-fourth the density of steel and more than four times stronger than steel, is an indispensable reinforcement for advanced composite materials. Its importance to advanced manufacturing is self-evident. However, for a long time, China has not been able to realize the industrial production of carbon fiber. High-performance carbon fiber materials have been tightly sealed from abroad, which has restricted the development of high-end industrial fields.
If you want to list the world's major carbon fiber manufacturing companies, Japan's Toray, Toho, and Mitsubishi Rayon are industry giants that can't get around, and companies such as the United States Zoltek, AKZO, and SGL also have Strong strength, and now more and more Chinese carbon fiber technology companies have made breakthroughs in this area.
SHSH began to develop 48K large tow carbon fiber precursors in July 2017. In July 2018, the polymerization and spinning technology of 48K carbon fiber precursors was successfully developed, and a 1,000-tonne polyacrylonitrile-based 48K carbon fiber precursor technology package was formed, and 48K carbon fiber precursors were produced in batches.
The 48K raw silk is subjected to oxidation and carbonization tests on the original 2,000-ton / year carbonization production line to conduct joint research on upstream and downstream. On August 17, 100 bundles of 48K carbon fiber precursors were successfully carbonized. After testing, 48K carbon fiber tensile strength, tensile modulus, interlaminar shear strength and other technical indicators have exceeded the T300 level.
Large tow carbon fiber is one of the new materials necessary for the development of modern equipment manufacturing. It is mainly used in industrial-grade precision products and other fields. It is expected that the demand growth rate will exceed 16% per year in the next few years. By 2020, global demand is expected to reach 15 More than 10,000 tons, China will reach more than 77,000 tons.
According to the technical director of SHSH Group, "1K carbon fiber precursors contain 1,000 monofilaments, and 48K precursors contain 48,000 monofilaments. In the carbon fiber industry, the number of filaments per bundle of carbon fiber is usually greater than 48,000 (referred to as 48K ) Are called large tow carbon fibers. "
"The biggest advantage of 48K carbon fiber is that under the same production conditions, the single-line carbon fiber production capacity can be greatly increased, the production cost can be reduced, the application limitation brought by the high price of carbon fiber can be broken, and the downstream layer layup efficiency can be greatly improved. Carbon fiber composites lay the foundation. "
SHSH Carbon Fiber Technology Group's 48K large tow carbon fiber has achieved mass production. It has epoch-making significance for the wide application of new carbon fiber materials in industrial and civil fields, and provides a strong guarantee for building a strong manufacturing country.
For carbon fiber powerhouses such as Japan and the United States, large tow carbon fiber preparation technology is one of the key technologies to achieve low cost in its carbon fiber industry, and large tow is also the main technical path for large-scale application of carbon fiber in the industrial field. To further enhance the competitiveness of China's carbon fiber industry, large tows are an important development direction.