Kevlar is a new high-tech synthetic fiber, with high strength, high modulus and high temperature, acid and alkali, light weight and excellent performance. It claims to have found in the material world significance "New Era" in. It is actually p-phenylenediamine and terephthalic acid chloride condensation polymerization of all para-aramid polymer, in our country generally referred to as aramid fibers.
Kevlar fiber is the highest strength synthetic fiber, which has chemical resistance, high insulation resistance, high tensile strength and initial elastic modulus and other characteristics. Currently used in high-tech areas of manufacturing tire cord, rubber reinforcing materials, special ropes and bullet-proof vests and other industrial fabrics and aerospace, defense and military.
Aramid fiber market, prospects poetry eye Nansheng
Since the sixties of the last century was discovered Kevlar, aramid fibers have gradually come out more. Currently, academia according to its structure will be divided into aramid aramid fibers, aramid and Kevlar ortho three pairs. Among them, the DuPont walk in the aramid fiber industry at the top. They are not only the first successful development of the aramid fiber, and took the lead in industrial development. Even today a few years later, DuPont Kevlar fiber in terms of new product development, production and regulatory touch, or are still in the market share in the world-class level.
Development of the aramid fiber developed countries than in Europe and America started very late, and some of the key aspects of technical engineering for a long time did not achieve a breakthrough. And because much of the world has been the aramid fiber as strategic materials to regulate, so the relevant technology is never disclosed or transferred, the implementation of the policy of blockade monopoly. Superposition of various factors causing the country aramid fiber industry, technology, product quality and production capacity are in developed countries there is a certain gap. One of the most prominent problem is still not cross the border of the solvent, resulting in the need to import most raw materials have to be resolved.
Thankfully, it is because China's economic construction in various aspects need a lot of Kevlar and composite materials. Therefore, the state will develop Kevlar composites as a one of the key areas of special fiber "second five" development. At the same time, the parties of aramid fiber and Jaguar frequent. The first is a breakthrough in the relevant research institutions aramid key engineering technology, and finally to the industry abroad 40 years of monopoly of the past.
In addition, the June 13, 2011, China's largest production base in Yantai special fiber of a company announcement, the company's commitment to the national "863" key project - 1000 tons of para-aramid industrialization project successfully put into operation, the product has been officially listed. It is understood that there are a number of large-scale kiloton and under construction para-aramid production line.
With respect to the localization of the para-aramid production, the meta-aramid currently used in domestic high-tech sector is also showing significant growth. Aramid fiber and composite materials because of its high strength, light weight, corrosion resistance, flame retardant insulation properties primarily used in aerospace and other high-end high-speed rail project. For example, China's self-developed high-speed trains on the application of the aramid paper honeycomb sandwich structure material as high-speed trains. The benefits not only reduces the weight of the train itself, so that the role of energy-saving high-speed train is very obvious, but also greatly reduces the noise it produces. Now, with the state decided to develop high-speed rail, the large aircraft project and other sophisticated areas of aerospace engineering at the same time, let aramid fiber composite materials also ushered in a historic opportunity for development.
Aramid fibers in the civilian aspects of the use of the broader, has been with our daily production and life blend. Wherein the aramid pulp fibers as a substitute for asbestos in the most widely applied. As we all know, asbestos and its products has been recognized as a potent carcinogen. As countries around the world boycott asbestos environmental transported to the deepening of some developed countries such as America and Europe have already banned the use of asbestos and its products.