Carbon fiber raw filaments have a great impact on the carbon fiber industry. my country’s independent productivity of high-end products needs to be improved.

In the carbon fiber industry chain, the upstream mainly includes raw fiber and production equipment suppliers, the midstream is carbon fiber and carbon fiber composite material manufacturers, and the downstream is application. Carbon fiber raw filaments are located in the upstream of the carbon fiber industry chain and are spun from materials such as polyacrylonitrile. The performance of raw fibers has a great impact on the quality and cost of carbon fiber. It generally needs to have excellent specific strength, specific modulus, high temperature resistance, corrosion resistance, radiation resistance, fatigue resistance and other characteristics.

According to different raw materials, carbon fiber precursors can be divided into polyacrylonitrile-based carbon fiber precursors, pitch-based carbon fiber precursors, viscose-based carbon fiber precursors, etc.; according to different K numbers, carbon fiber precursors can be divided into large Tow carbon fiber precursor, small tow carbon fiber precursor, etc. Among them, polyacrylonitrile-based carbon fiber precursors have obvious performance advantages, with the largest output and the widest range of applications; small-tow carbon fiber precursors have better stability and are in greater demand in high-tech industries such as aerospace and aerospace.

The preparation of carbon fiber raw filaments requires a variety of processes. The spinning process is one of the key steps. In my country and the global market, dry-jet wet spinning and wet spinning are the mainstream processes. Dry-jet wet spinning has the advantages of high product quality and fast spinning speed. With other advantages, the product performance and spinning speed of wet spinning are also constantly improving. In the global carbon fiber raw yarn market, Japan’s Toray, Toho, and Mitsubishi, and Germany’s SGL are the leading manufacturers. Taking Japanese companies as an example, Toray and Mitsubishi use two spinning processes at the same time, and Teijin uses wet spinning. spinning process.

According to the “2021-2025 Carbon Fiber Raw Filament Industry In-depth Market Research and Investment Strategy Suggestions Report” released by the Industrial Research Center, in In the Chinese market, the main carbon fiber raw filament manufacturers include Hengshen Co., Ltd., Zhongfu Shenying, Guangwei Composite Materials, Jilin Carbon Valley, etc. Hengshen Co., Ltd. and Guangwei Composite Materials adopt two processes: dry-jet wet spinning and wet spinning. Fu Shenying adopts dry-jet wet spinning process, and Jilin Carbon Valley adopts wet spinning process. Jilin Carbon Valley can produce large and small tow carbon fiber raw filaments. In 2020, my country’s carbon fiber raw filament consumption is approximately 103,000 tons, of which domestic raw filaments account for approximately 38%. Among domestic raw filament consumption , Jilin Carbon Valley accounts for about 50%. Jilin Carbon Valley is the largest supplier of carbon fiber raw filaments in my country.

Carbon fiber has excellent performance and a wide range of downstream applications. It can be used in many fields such as electronics, machinery, industrial equipment, wind power, automobiles, ships, rail transportation, aerospace, etc. After continuous development, my country’s carbon fiber production strength has continued to improve, but the demand for high-end carbon fiber and composite materials is still highly dependent on external sources. In the changing international political and economic situation, the risk of stable supply of carbon fiber products relying on imports is high. my country must achieve independent production of high-end products. As a raw material for production, carbon fiber raw silk has an equally urgent need for high-end development.

Industry analysts said that my country is transforming from a manufacturing power to a manufacturing power. The market demand for high-performance materials is growing rapidly, and high-end carbon fiber and Composite materials have broad room for development, but my country’s production capacity is weak and its demand is highly dependent on foreign countries. The performance of carbon fiber raw filaments directly affects the quality and production cost of carbon fiber products, and is one of the key links in the technological upgrading of my country’s carbon fiber industry. In the future, carbon fiber raw filament manufacturers that are recognized in the high-end market will have greater development potential.