Major Breakthrough in Domestic High-End Aramid! Independent Mass Production of 5000-Ton Grade High-Strength/High-Modulus PPTA Fiber Achieved
Time：2025-10-30Number of Views：205
On October 17, 2025, the China National Textile and Apparel Council organized a scientific and technological achievement appraisal meeting in Yangzhou City, Jiangsu Province, for the "Key Technologies for Green Preparation of High-Strength/High-Modulus Para-Aramid" project, jointly completed by Sinochem High Performance Fiber Materials Co., Ltd. and Donghua University. The appraisal committee concluded that the project's achievements have reached internationally advanced levels. A brief introduction of the project's research findings is as follows:
Project Research Background
High-performance para-aramid (PPTA) is a critical strategic material for China, possessing both military and economic value. It is widely used in aerospace, military, ballistic protection, and various other fields, making it an important dual-use material. By 2025, the global market demand for PPTA is projected to reach 120,000 tons, with an annual growth rate exceeding 9%. China's military and high-end manufacturing sectors alone require nearly 10,000 tons of high-strength products annually. Since the industrialization of PPTA fiber in 1972, US-based DuPont and Japan's Teijin have held an absolute advantage in high-end manufacturing and downstream applications due to their technological accumulation. As of 2024, their respective production capacities account for 40% and 35% of the global total, with high-strength/high-modulus products occupying a significant market share. Although domestic Chinese enterprises have made considerable progress in PPTA manufacturing technology and industrial development with policy support, they still face challenges such as poor batch stability, small scale, weak capabilities in differentiated products and downstream application technologies, making it difficult to meet high-end demands. Therefore, the development of industrial-scale technology for high-end PPTA fibers is urgently needed.
To meet the needs of major national projects, achieve rapid development in China's high-performance fiber industry, and fill the gaps in domestic high-performance fiber technology, Sinochem High Performance Fiber Materials Co., Ltd. has established an annual production capacity of 5,000 tons of high-strength/high-modulus aramid fiber, utilizing proprietary production technology. This initiative aims to promote the high-quality, stable development of China's high-end PPTA fiber, differentiated products, and downstream product industries, thereby enhancing international competitiveness. The project has broken through the "bottleneck" of large-scale, stable production technology for high-strength/high-modulus PPTA fiber in China and achieved the localization of the key equipment industry chain.
Major Project Innovations
· Developed low-temperature solution polycondensation process control technology for high-capacity reactors, enabling the stable production of PPTA with high molecular weight and narrow distribution.
· Overcame the technology for rapid and efficient dissolution of high molecular weight para-aramid polymer, enhancing the uniformity of PPTA fiber in industrial production.
· Developed liquid crystal spinning and high-modulus, low-strength-loss heat treatment technology for high-modulus para-aramid, as well as fine-denier per filament liquid crystal spinning technology for high-strength para-aramid. The initial modulus of the high-modulus 1500D product reached 837 cN/dtex, and the breaking strength of the high-strength 1000D product reached 24 cN/dtex.
· Established a calcium chloride recycling technology for the polymerization process, where the recovered calcium chloride solution meets the requirements for the polymerization process.
Project Industrialization and Application Status
The project has successfully established a 5,000 ton/year high-strength/high-modulus PPTA fiber production line, which has entered the industrial operation phase. The integrated polymerization and spinning processes are fully automated and operating at designed capacity and efficiency. Product quality and stability are steadily improving, with performance meeting the demands of the high-end market. The company is currently supplying various specifications of high-strength and high-modulus fiber products to the market.
Project Research Background
High-performance para-aramid (PPTA) is a critical strategic material for China, possessing both military and economic value. It is widely used in aerospace, military, ballistic protection, and various other fields, making it an important dual-use material. By 2025, the global market demand for PPTA is projected to reach 120,000 tons, with an annual growth rate exceeding 9%. China's military and high-end manufacturing sectors alone require nearly 10,000 tons of high-strength products annually. Since the industrialization of PPTA fiber in 1972, US-based DuPont and Japan's Teijin have held an absolute advantage in high-end manufacturing and downstream applications due to their technological accumulation. As of 2024, their respective production capacities account for 40% and 35% of the global total, with high-strength/high-modulus products occupying a significant market share. Although domestic Chinese enterprises have made considerable progress in PPTA manufacturing technology and industrial development with policy support, they still face challenges such as poor batch stability, small scale, weak capabilities in differentiated products and downstream application technologies, making it difficult to meet high-end demands. Therefore, the development of industrial-scale technology for high-end PPTA fibers is urgently needed.
To meet the needs of major national projects, achieve rapid development in China's high-performance fiber industry, and fill the gaps in domestic high-performance fiber technology, Sinochem High Performance Fiber Materials Co., Ltd. has established an annual production capacity of 5,000 tons of high-strength/high-modulus aramid fiber, utilizing proprietary production technology. This initiative aims to promote the high-quality, stable development of China's high-end PPTA fiber, differentiated products, and downstream product industries, thereby enhancing international competitiveness. The project has broken through the "bottleneck" of large-scale, stable production technology for high-strength/high-modulus PPTA fiber in China and achieved the localization of the key equipment industry chain.
Major Project Innovations
· Developed low-temperature solution polycondensation process control technology for high-capacity reactors, enabling the stable production of PPTA with high molecular weight and narrow distribution.
· Overcame the technology for rapid and efficient dissolution of high molecular weight para-aramid polymer, enhancing the uniformity of PPTA fiber in industrial production.
· Developed liquid crystal spinning and high-modulus, low-strength-loss heat treatment technology for high-modulus para-aramid, as well as fine-denier per filament liquid crystal spinning technology for high-strength para-aramid. The initial modulus of the high-modulus 1500D product reached 837 cN/dtex, and the breaking strength of the high-strength 1000D product reached 24 cN/dtex.
· Established a calcium chloride recycling technology for the polymerization process, where the recovered calcium chloride solution meets the requirements for the polymerization process.
Project Industrialization and Application Status
The project has successfully established a 5,000 ton/year high-strength/high-modulus PPTA fiber production line, which has entered the industrial operation phase. The integrated polymerization and spinning processes are fully automated and operating at designed capacity and efficiency. Product quality and stability are steadily improving, with performance meeting the demands of the high-end market. The company is currently supplying various specifications of high-strength and high-modulus fiber products to the market.
Sinochem High Performance Fiber Materials Co., Ltd. has built its own marketing network system and leverages Sinochem's international sales platform. It has established strong cooperative relationships with entities such as the PLA General Logistics Department, the PLA General Armaments Department, Jiangsu Hengtong, and Shenzhen Changfei, possessing a solid customer base. The products are stably supplied to numerous application fields including ballistic protection, automotive industry, industrial equipment, and aramid composites. They have received high market recognition and have successfully entered the supply chains of major leading enterprises.
