China built the world's first annual output of 30 tons of high strength and high modulus polyimide fiber production line

2017-02-27

Recently, a reporter from the Jiangsu Xiannuo new Mstar Technology Ltd was informed that a professor of Beijing University of Chemical Technology, Jiangsu Xiannuo chairman Wu Dezhen led the innovation team, has developed and built at home and abroad, the first annual output of 30 tons scale high strength high modulus polyimide fiber production line, which indicates that this kind of fiber preparation industry to further forward, and realize small mass production.

Polyimide, as the most advanced polymer material, has been widely used in the fields of film, resin, engineering plastics and so on. And its fiber, especially high strength and high modulus products are little-known. It is understood that, after a number of developed countries in foreign countries with high strength and high modulus as the goal of polyimide spinning for many years of research, has not been successful, mainly the spinning process and related equipment problems can not be solved.

Wu Dezhen introduction, the integration of the spinning process of polyamic acid solution of the invention of the innovation team of solidification, drafting, imidization, achieved from polyimide prepolymer and polyamic acid solution of directly obtained high strength high modulus polyimide fiber. "The need for special structure of monomer synthesis of polyimide can be dissolved in a solvent, and if the polyamic acid, many monomers can be used, so as to improve the performance of molecular structure design, the cost will also be effectively controlled. In addition, the common solvent used in the preparation process can be recycled, and no environmental pollution can be generated." This technology has broken through the bottleneck of the preparation of high strength and high modulus polyimide fiber, has completely independent intellectual property rights, of which 3 core patents authorized by the United States, to reach the international advanced level.

According to reports, the high strength and high modulus polyimide fibers, the tensile strength reached 3.5GPa, much higher than the common market products, anti deformation ability, glass transition temperature reached 340 degrees Celsius, 5% thermal decomposition temperature reached 550 degrees Celsius, not easily soft, not easy to burn. The preliminary application shows that it has the advantages of light weight, high strength and high modulus, and can be used in the fields of Aeronautics and Astronautics, military and so on.