my country’s successful research and development of copolymerized flame retardant polyamide

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 technical problems in engineering production, and synthesizes flame-retardant polyamide materials. Its vertical combustion performance reaches UL94 V-0 level, and its oxygen index is greater than 28. It also produces 1.5-20D filaments and short fibers in batches, realizing industrial production. .

Polyamide, commonly known as nylon (PA), is one of the basic materials for textile fibers and engineering plastics. It has high strength and is widely used in industrial products, textiles and clothing, military industry and other fields. It is the most used material in the field of engineering plastics. Among them, polyamide materials are dominant in military logistics equipment. In developed countries such as the United States and Europe, polyamide fiber products account for nearly 70%.

In the past, 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 retardancy of ordinary polyamide fibers, its vertical combustion can only reach UL94 V-2 level, and its oxygen index is about 24, which limits the application of polyamide fibers in the field of combat protective clothing. The research and development of high-strength flame-retardant polyamide materials has become a common concern and research topic in the academic and industrial circles.

The flame-retardant fiber can be widely used in combat uniforms, combat carrying equipment, tents, sleeping bags, etc., and can also be used in flame-retardant tooling, aircraft, Ships, high-speed rail interiors and carpets can not only improve their durability and comfort, but also reduce their weight by nearly 20%. At present, the technology has applied for 14 invention patents, and 5 have been authorized.