Recently, a research team headed by Dr. Feng Xinxing established by the Military Equipment Research Institute of the Logistics Support Department of the Central Military Commission successfully developed a new technical route for the preparation of flame-retardant polyamide by copolymerization. . This route solves a series of engineering production technical problems, synthesizes flame-retardant polyamide materials, whose vertical combustion performance reaches UL94 V-0 level, and oxygen index is greater than 28, and mass-produces 1.5-20D filaments and short fibers to achieve industrialized production. .
Polyamide, commonly known as nylon (PA), is one of the basic materials of textile fibers and engineering plastics. It is widely used because of its light weight, good wear resistance and high strength. It is used in industrial products, textiles and clothing, military industry and other fields, and is the most widely used material in the field of engineering plastics. Among them, polyamide materials dominate military logistics equipment. In developed countries such as the United States and Europe, polyamide fiber products account for nearly 70%.
Previously, the cutting-edge production technology of high-performance polyamide was mainly controlled by the United States, Japan and Germany, and China could only produce the most conventional products. Due to the poor flame retardant properties of ordinary polyamide fiber, its vertical combustion can only reach UL94 V-2 level and the oxygen index is about 24, which limits the application of polyamide fiber in the field of combat protective quilts. The research and development of high-strength flame-retardant polyamide materials has become a topic of common concern and research in today’s academic community and industry.
This flame-retardant fiber can be widely used in combat uniforms, combat equipment, tents, sleeping bags, etc. It can also be used in flame-retardant workwear, aircraft, ships, and high-speed rail interiors and carpets, which not only improves their durability and comfort, but also reduces weight by nearly 20%. Currently, this technology has applied for 14 invention patents and granted 5 patents.
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