At present, the technological innovation in the field of fiber materials is promoting the disruptive development of the fiber industry. Modern fiber materials applications have surpassed traditional fibers and become advanced manufacturing, smart and functional consumer goods, medical and health, environmental protection and protection, modern construction and agriculture, and new Key fundamental materials and core materials such as energy, as well as important breakthroughs in structural reforms at the national supply side.

At present, fiber materials have become one of the world’s fastest growing and most active science and technology fields. “The 13th Five-Year National Specialized Research Program Special Project” supports a total of 15 projects in the field of textiles, including technological upgrading of key basic materials in the field of chemical fiber. Industrialization is an important measure to promote the development of high-performance composite materials, advanced structural materials, new functional materials, and green fiber materials. The

On March 15, the seminar on technology upgrading and industrialization of key basic materials in the chemical fiber field co-sponsored by the Ministry of Science and Technology of the China National Textile and Apparel Council and the China Chemical Fiber Industry Association was held at the National Convention and Exhibition Center (Shanghai). Gao Zhinong, researcher of the Ministry of Science and Technology of the Ministry of Science and Technology, and Xiong Sen, responsible person in charge, Jiang Zhijun, director of the High Technology Center of the Ministry of Science and Technology, Jiang Shicheng, academician of the Chinese Academy of Engineering, Li Lingshen, vice president of the China Textile Association, and president of the Chinese Academy of Sciences, and the China Textile Technology Department, China Leaders of Chemical Fiber Association, China Textile Institute attended the seminar. The conference focused on the development of related content of fiber materials. Eight professors and experts from universities, research institutes, and enterprises shared the results from the foundation frontier, major common key technologies, and applications. The meeting was chaired by Wang Yuping, vice president of China Chemical Fiber Industry Association.

In his speech, Jiang Shicheng stated that the report of the Nineteenth Congress proposed that innovation is the primary driving force for development and the strategic support for the construction of a modern economic system. The industry should aim at the forefront of science and technology in the world, strengthen basic research, achieve forward-looking basic research, and lead a major breakthrough in original achievements. It is necessary to strengthen the application of basic research, expand the implementation of major national science and technology projects, highlight key common technologies, leading-edge technologies, modern engineering technologies, Disruptive technology innovation. It is hoped that through this exchange meeting, industry-specific achievements will be shared to jointly advance the high-quality development of the chemical fiber industry.

Li Lingshen also stated at the meeting that high-tech such as differentiation and functionalization of fiber materials has brought about rapid changes in people’s lives. The current orientation of China’s textile industry is “technology, fashion, and green” and fiber materials will be used in technology and Green plays a decisive role. It can be said that the research of fiber materials will vigorously promote the overall healthy development of the textile industry.

1. Highly efficient preparation technology of recycled polyester fiber

Project leader: Wang Huaping, vice president of the Institute of Donghua University

The project has a total of four technological innovations, namely, the efficient recycling of used products and physical and chemical process regeneration technologies, heterogeneous high-efficiency alcoholysis and BHET direct regeneration polymerization technologies, and the specialized production technology for the efficient regeneration of waste polyester, low melting point polyester preparation. And "a new package of old" composite spinning technology. The

The project has taken the lead in realizing the large-scale recycling of 200,000 tons of waste polyester textiles, built a Chinese program for the development of recycled polyester industry, changed the international polyester cloth foam physics or chemical treatment, and achieved a recycled fiber. The balance between cost and performance has comprehensively improved the recycling rate of waste textiles.

2. Key technologies for high-quality flame-retardant fibers and products

Leader of the project: Wang Rui, Dean of School of Material Science and Engineering, Beijing Institute of Clothing Technology

Many institutions at home and abroad have carried out research on flame retardant technology and have made certain progress. However, there are problems such as low flame retardance, poor durability, large amount of smoke, serious droplets, and high costs. Research on high-quality flame-retardant fibers and products.

The key technologies for high-quality flame-retardant fibers and products are to solve the problems of structural design and controllable equipment for high-efficiency flame retardants, high dispersion and inhibition of migration of flame retardants, synergy between flame retardance and smoke suppression, and the contradiction between fiber flame retardancy and processability. Melting spinning forming and burning droplets serious contradiction problems.

In the future, flame-retardant fibers will develop in four directions of research and development: long-term green environmental protection high-quality flame-retardant fibers, functional composite flame-retardant fibers, comfort-resistant flame-retardant fibers, and new high-performance flame-retardant fibers.

3. Flexible and efficient preparation technology of polyester and polyamide fibers

Project Leader: Zhao Fengcai, Deputy General Manager of Xinfengming Group Co., Ltd.

The project has three innovations: First, full-process engineering simulation and product development system innovation; second, polyamide 6 polymer process innovation; third, integrated innovation of spinning key technology and equipment modularity. Through innovative research, a full-process high-efficiency preparation system for polyester and polyamide has been established, professional design and development have been realized, and leading the industry's future development.

In the future, in terms of basic research, the project will realize the polyester, polyamide copolymerization, spinning forming and structural evolution mechanism, and the whole process engineering simulation; in key technologies, 3 to 5 original, system integration innovations and autonomy will be formed. Intellectual property polyester and polyamide flexible and efficient preparation of key technology systems; In the application of demonstration, built 5 to 8 demonstration projects with the driving effect and industrialization demonstration bases, to promote the flexible and efficient production of polyester fiber production capacity of 4 million tons , Polyamide 6 fiber production capacity of 500,000 tons. Through these technologies, the flexible and efficient preparation technology of polyester and polyamide fibers has reached the international advanced level.

4. High-quality polylactic acid fiber and its large-scale preparation and application of textiles

Project Leader: Professor Yu Muhuo, Donghua University

Polylactic acid fiber is the vanguard of the health, green, and environmental industries. New biomass fibers include natural fibers, recycled fibers and synthetic biomass fibers. Polylactide fiber belongs to synthetic biomass fiber. The raw materials come from the agricultural and sideline products such as cassava, corn cob and straw. The energy consumption of the production process is low, only 66% of PET, and the amount of carbon dioxide produced in the production process is 0.3 kg. Other polymers More than 2 kilograms, it belongs to low-carbon environment-friendly products. Polylactic acid fibers are expected to partially replace polyester due to their similar properties.

5. High-performance polyester and polyamide 66 industrial yarn preparation technology

Project Leader: Dr. Zhang Xianming, Zhejiang University of Science and Technology

The project's landmark achievements include two, one is the development of the second-generation melt polycondensation reactor, the successful preparation of a polyester melt with an intrinsic viscosity of more than 1.05 dl/g, and successive development of pilot and industrial-scale viscosity-increasing reactors. The device has been successfully commissioned on the production line. The second is that the production capacity of the polyamide 66 airbag wire production line has reached 10,000 tons/year, and the strength of the airbag wire measured by the Shenma Laboratory has reached 8.25 cN/dtex, and the strength of the industrial wire has reached 8.97 cN/dtex.

6. Bio-based polyester, polyamide efficient polymerization spinning technology

Leader of the project: Liu Xiucai, Chairman and CEO of Kaysai Bio-Industry Co., Ltd., and Shue Chang Chang, Jiangsu Guowang Hi-Tech Fibers Co., Ltd.

Liu Xiucai focused on the progress in the R&D and industrialization of Cathay Bio-based polyamides. Kaisai Bio-Industry Co., Ltd. is the first and only company in the world that uses biotechnology to implement large-scale, long-chain dicarboxylic acids, bio-butanol, bio-based pentamethylenediamine and other revolutionary industrialization technologies. In recent years, Kaisai Biological has developed bio-based pentamethylenediamine and produced bio-based polyamides with excellent performance, and completed its industrialization trial run in 2014. In 2016, Kaisai Biological Xinjiang Wusu Production Base commenced construction and it is expected to achieve an annual production capacity of 50,000 tons of bio-based pentamethylenediamine, an annual production capacity of 100,000 tons of bio-based polyamide, and an annual production capacity of 30,000 tons of long-chain dibasic acid. The base will be put into production soon.

When Bian Shuchang talked about the subject's goals, he pointed out two of the key technologies to solve. Among them, the bio-based PTT continuous polymerization and melt direct spinning technology needs to solve is the bio-based PTT efficient catalytic and thermal stabilization technology, the development of multi-chamber reverse flow esterification, dual fast-switching vacuum system, low-temperature five-kettle continuous polymerization technology and key Equipping and conquering key technologies for high-volume bio-based PTT melt spinning. Bio-based PTT functionalization and differential spinning technology need to solve the development of a dedicated composite spinning box and components, as well as the preparation of bio-based PTT and PET, ECDP, PBT and other two-component composite fibers to form 60,000 tons/year bio-based PTT Polymer spinning technology demonstration.

7. Development and application of high-quality pigmented fiber

Leader of the project: Senior Engineer Jin Jian of China Textile Academy

The liquid coloring fiber is added with a coloring agent in the spinning solution or the melt, and the colored fiber is obtained through spinning, which eliminates the dyeing process, reduces the waste water discharge, and has outstanding environmental friendly features. At present, the output of China's raw liquid coloring fiber is about 4.5 million tons, which only accounts for about 10% of the total chemical fiber production, and there is huge room for future growth.

The objectives of the project are three: First, focusing on polyester fibers and polyamide fibers; Second, breaking through the key core technologies in all links of the entire industry chain; Third, establishing the quality of pigment/dye, masterbatch and fiber integration. And basic color detection methods and standard systems, establish fiber preparation and application of technical specifications and databases. Focusing on these three goals, we have broken through the development of high-quality raw liquid colored fibers for efficient preparation and high-level application of industrialization technology, upgrading the overall technological innovation chain of China's raw liquid colored fiber industry, and enhancing the overall competitiveness of the industry.