【Ten Years of Rapid Development in Chemical Equipment】2212–2025: China’s First Pilot Plant for Producing Micro-grade High-Strength Polyoxymethylene Fibers at a Rate of 50 tons per year

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Give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Great Development in Chemical Engineering Equipment】Regular updates and summaries are available – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** Recently, reporters learned from the Kailuan Group’s Pilot Demonstration Platform for the Transformation of Scientific and Technological Achievements in Chemical New Materials in Hebei Province that China’s first industrial-scale demonstration facility for producing micro-grade high-strength polyoxymethylene fibers at a rate of 50 tons per year has, after nearly two months of trial production, shown stable operation. The strength of the produced products exceeds the design values by 10%, reaching 10.0 grams/denier, thus filling a gap in this field both domestically and internationally. 　　It is understood that the steady operation of this device marks the addition of a new member to the series of micron-level polyoxymethylene fiber products that Kailuan Group has been developing through independent research over a period of twelve years. High-strength polyoxymethylene fibers, also known as high-strength polyoxymethylene wires, possess a range of excellent properties including high stiffness, self-lubrication, resistance to seawater and solvents, wear resistance, fatigue resistance, creep resistance, tolerance to extreme temperatures, and good dimensional stability. Polyoxymethylene high-strength fibers are novel synthetic fibers manufactured using polyoxymethylene, a polymer material known as \"steel substitute\", as the raw material. They possess a breaking strength of over 9.0 grams/denier, with a fiber diameter as low as 50 microns. These fibers can be applied in areas such as deep-sea mooring cables, marine farms, high-end building materials (such as self-leveling materials), filtration equipment, powder metallurgy, and as frameworks for precision manufacturing processes. 　　Due to the high crystallinity, solvent resistance, and tendency to decompose of polyoxymethylene materials, it is extremely difficult to produce microscale fiber products in a continuous and stable manner. Over the more than 70 years since the invention of polyoxymethylene materials, numerous companies and research institutions at home and abroad have conducted years of research on polyoxymethylene spinning with the goal of achieving micron-level dimensions and high strength, yet they have yet to overcome the dual bottlenecks related to specialized technical equipment. 　　Since 2013, Kailuan Group has successively built four pilot and industrial demonstration facilities for the synthesis, modification, and spinning of polyoxymethylene. It has been granted nearly 20 invention patents, establishing a system that promotes the mutual improvement of process technology and equipment control as well as the development of independent intellectual property rights. As a result, it was the first to develop high-strength microscale polyoxymethylene fibers, representing a new form of productive capacity. The group now possesses a range of microscale polyoxymethylene fiber products, including industrial fibers, coarse-denier fibers, fine-denier fibers, specialty-shaped fibers, colored fibers, and high-strength fibers.