High performance fibers refer to chemical fibers with special physical and chemical structures, properties and applications, or with special functions. They generally have very high tensile strength and Young's modulus, and have other characteristics such as high temperature resistance, radiation resistance, fire resistance, high pressure resistance, acid resistance, alkali resistance and oxidant resistance. They are widely used in navigation. Aerospace, defense, military, transportation, industrial engineering, geotechnical construction, and even biomedical and electronic industries. High-performance fiber composite is a kind of composite material, which is made of high-performance fiber as reinforcing material and resin as matrix. It has many excellent properties, such as light weight, high strength, high modulus, fatigue resistance, corrosion resistance, strong designability, easy processing and moulding. High performance fibers and composites are developing in the direction of advanced manufacturing technology, low cost, high performance materials, multi-function and application expansion. In terms of application technology and industrial maturity, carbon fiber, aramid fiber and ultra-high molecular weight polyethylene fiber are the most powerful high-performance fibers. With the improvement of downstream composite forming technology, market promotion and demand are increasing and showing a trend of accelerated expansion.
At present, Japan, the United States and the European Union are the dominant players in the global industry of high performance fibers and composites. Among them, Japan has absolute advantages in the field of carbon fiber, Toray, Emperor and Mitsubishi Liyang (now Mitsubishi Chemistry) contribute half of the global carbon fiber production capacity; the United States has DuPont, the dominant company in the aramid industry, which monopolizes high-end product technology while forming price control for low-end products; Europe is in the super. High molecular weight polyethylene (HMWPE) fiber has a dominant position in the field of Dutch Dismann Company. So far, it is still the main supplier of ultra-high molecular weight polyethylene fibers in the world, and its production capacity is double that of other dominant enterprises.
Compared with many foreign giant enterprises, the development of aramid fiber in China started relatively late, and both the technical level and the scale production are in a backward stage. However, with the joint efforts of government policy support and rapid development of domestic enterprises, aramid fiber industry in China has achieved rapid development. According to the statistics of Shuiqing Muhua Research Center, the aramid fiber output in China in 2016 was about 14,000 tons (12.5% of the world), an increase of 8.3% compared with the same period last year, and the annual composite growth rate in 2011-2016 was 10.4%. From 2017 to 2021, the aramid market will continue to grow at a rate of about 10.0% under the continuous promotion of national policies.
At present, the normative work of high performance fibers and composites industry in China still needs to be strengthened. Especially in the field of high-end products, the actual product performance of enterprises is not ideal and the quality is unstable, which has a serious impact on the application and promotion of high performance fibers and composites. Relevant industry standards and application design requirements have a positive role in promoting the development of high-performance fiber industry. According to our own actual situation, and drawing on the performance characteristics of foreign high-performance fiber products, China can establish technical standards and industry standards for high-performance fiber industry. Through the establishment of norms, it can also promote healthy competition within the industry, help to establish industry benchmarks, and expand China's industrial influence in the field of international high-performance fibers and composite materials.