Aramid fiber, the three major high-performance fibers
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Aramid fabric Aramid 1414 para-aramid fiber
At present, the overall supply of aramid fiber has exceeded demand, but the supply and demand situation of aramid 1414 is still tight. Domestic aramid fiber consumption is strong, with a compound annual growth rate of approximately 30%. We believe that with the increase in supply, domestic aramid 1313 for high-temperature filter materials may have overcapacity. Aramid 1313 has great market potential in protection fields that require a certain technical content and high-end aramid paper product applications; domestic aramid 1414 Mainly relying on imports, supply is the key.
Aramid fiber is mainly divided into two types, para-aramid fiber (PPTA) and meta-aramid fiber (PMIA). Since the 1960s, it was developed by DuPont in the United States. ) company successfully developed aramid fiber and took the lead in industrialization. In more than 30 years, aramid fiber has gone through the transition process from military strategic materials to civilian materials, and the price has been reduced by nearly half. Nowadays, foreign aramid fibers are becoming increasingly mature in terms of research and development level and large-scale production. In the field of aramid fiber production, para-aramid fiber has developed rapidly, and its production capacity is mainly concentrated in Japan, the United States, and Europe. Such as DuPont’s Kevlar fiber in the United States, Twaron fiber from Akzo Nobel in the Netherlands (already merged with Teijin), Technora fiber from Teijin in Japan, and Terlon fiber in Russia. Varieties of meta-aramid fiber include Nomex, Conex, Fenelon fiber, etc. DuPont in the United States is a pioneer in the development of aramid fibers. They are first-class in terms of new product research and development, production specifications, and market share. The Kevlar fibers they produce currently include Kevlar-49, Kevlar- 29 and more than ten brands, each brand has dozens of specifications of products. DuPont announced last year that it would expand its Kevlar fiber production capacity, and the expansion project is expected to be completed by the end of this year. Not to be outdone, well-known aramid production companies such as Teijin and Hoechst have expanded production or joined forces, and actively explored the market, hoping to become a new force in this rising industry.
The full name of para-aramid fiber is “poly-p-phenylene terephthalamide”, which is Para-Aramid fiber in English. It is a new high-tech Synthetic fiber has excellent properties such as ultra-high strength, high modulus, high temperature resistance, acid and alkali resistance, and light weight. Its strength is 5 to 6 times that of steel wire, its modulus is 2 to 3 times that of steel wire or glass fiber, and its toughness is It is 2 times that of steel wire, but its weight is only about 1/5 of steel wire. It will not decompose or melt at a temperature of 560 degrees. It has good insulation and anti-aging properties and has a long life cycle. The discovery of aramid 1414 is considered a very important historical process in the material world.
Para-aramid fiber is an important national defense and military material. In order to meet the needs of modern warfare, currently, body armors in developed countries such as the United States and the United Kingdom are Aramid material, the lightweight of aramid body armor and helmets has effectively improved the army’s rapid response capability and lethality. During the Gulf War, U.S. and French aircraft used aramid composite materials extensively. In addition to military applications, it is now widely used as a high-tech fiber material in various aspects of the national economy such as aerospace, electromechanical, construction, automobiles, and sporting goods. In terms of aviation and aerospace, para-aramid fiber saves a lot of power fuel due to its light weight and high strength. According to foreign data, during the launch process of a spacecraft, every kilogram of weight reduced means a reduction of US$1 million. the cost of. In addition, the rapid development of science and technology is opening up more new civilian spaces for aramid. According to reports, at present, para-aramid fiber products are used in body armor, helmets, etc., accounting for about 7 to 8%; aerospace materials and sports materials account for about 40%; tire frame materials, conveyor belt materials, etc. account for about 20% Around 13%, as well as high-strength ropes and other aspects.
The German Acordis company has recently developed a high-performance ultra-fine para-aramid (Twaron) product, which neither burns nor melts, and has a high With its high strength and maximum cutting ability, it can be mainly used to produce various textile and clothing equipment that are both high temperature resistant and cutting resistant, such as coated and uncoated fabrics, knitted products and needle felts. The fineness of Twaron ultra-fine filament is only 60% of para-aramid commonly used in occupational safety clothing. Use it to weave gloves, and its cutting resistance is increased by 10%. Use it to produce woven fabrics and knitted products, which have a softer feel. More comfortable. Twaron anti-cut gloves are mainly used in the automobile manufacturing industry, glass industry and metal parts manufacturing plants. They can also produce leg protection products for the forest industry and provide anti-vandal equipment for the public transportation industry. Twaron’s flame-retardant and heat-resistant properties can be used to provide equipment such as protective suits and blankets for fire brigades, heat-resistant fire-proof clothing for high-temperature operating departments such as foundries, furnaces, and glass factories, and the production of aircraft seat retardant fuel. This high-performance fiber can also be used to create automobile tires, cooling hoses, V-belts and other mechanical parts, optical fiber cables and bulletproof vests and other protective equipment, and can also replace asbestos as friction materials and sealing materials.
According to statistics from relevant departments, the total demand for aramid fiber was 360,000 tons/year in 2001, and will reach 500,000 tons/year in 2005 . The demand for aramid fiber is growing continuously, and aramid fiber is entering the market as an emerging high-performance fiber.Entered a period of rapid development.
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