What is the progress of cutting-edge technology in the chemical fiber industry? And listen to the project leader for you to come in detail

At present science and technology innovation in the field of fiber material is driving the development of disruptive fiber industry, modern fiber material applications beyond the traditional fiber, become an advanced manufacturing, intelligent and functional consumer products, medical and health, and environmental protection, modern agriculture and the construction industry, new Key basic materials and core materials such as energy, and an important breakthrough in the structural reform of the supply side of the country.

At present, fiber materials have become one of the fastest growing and most active scientific and technological fields in the world. The “ 13th Five-Year National Key Seminar Program” supports 15 projects in the textile field, including the promotion of key basic materials technology in the chemical fiber field. Industrialization is an important measure to promote the development of high-performance composite materials , advanced structural materials, new functional materials, and green fiber materials.

March 15, by the Chinese Ministry of Science and Technology Development Textile Industry Association and China Chemical Fiber Industry Association co-sponsored Basic materials and technology to enhance the field of chemical fiber industrial Seminar held at the National Exhibition Center (Shanghai). Li Zhinong, researcher of the Ministry of Science and Technology of the Ministry of Science and Technology, Xiong Sen, relevant 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 the Ministry of Science and Technology of China Textile Association, China Leaders of the Chemical Fiber Association and China Textile Institute attended the exchange seminar. The conference focused on the related content of fiber materials, and eight professors and experts from universities, research institutes and enterprises shared results from basic frontiers, major common technologies and applications.

The meeting was chaired by Wang Yuping, vice president of China Chemical Fiber Industry Association.

In his speech, Jiang Shicheng said that the report of the 19th National Congress stated that innovation is the first driving force for development and the strategic support for building a modern economic system. The industry should aim at the forefront of the world's science and technology, strengthen basic research, achieve forward-looking basic research, and make major breakthroughs in leading original achievements. It is necessary to strengthen the application of basic research, expand the implementation of national major science and technology projects, highlight key common technologies, leading-edge technologies, modern engineering technologies, Subversive technological innovation. We hope that through this seminar to share the results of the special industry, chemical fiber industry to jointly promote the development of high quality.

Li Lingshen also said at the meeting that the high-tech and other high-tech materials have brought about rapid changes in people's lives. The current position of China's textiles is "technology, fashion, green", while fiber materials will be in technology and Green plays a pivotal role. It can be said that the research of fiber materials will strongly promote the overall healthy development of the textile industry.

1. High-efficiency preparation technology of recycled polyester fiber

Project Leader: Wang Huaping, Vice President of Donghua University Research Institute

The project has a total of 4 technological innovations, namely, high-efficiency recycling of waste products and physical and chemical regeneration technology, heterogeneous high-efficiency alcoholysis and BHET direct regeneration polymerization technology, high-efficiency recycling of waste polyester, and preparation of low-melting polyester. And the "new package old" composite direct spinning technology.

The project took the lead in realizing the scale recycling of waste polyester textiles of 200,000 tons, and built a Chinese solution for the development of recycled polyester industry. It changed the international polyester foam material physical or chemical single treatment technology to realize recycled fiber. both cost and performance, enhancing the overall recycling rate of waste textiles.

2. Key technologies for high quality flame retardant fiber and products

Project leader: Wang Rui, Dean of School of Materials Science and Engineering, Beijing Institute of Fashion Technology

Many domestic and foreign institutions have carried out research on flame retardant technology, and have made some progress, but there are problems such as low flame retardant efficiency, poor durability, large amount of smoke, serious droplets, and high cost. Research on high quality flame retardant fibers and products.

The key technology of high-quality flame retardant fiber and products is to solve the structure design and controllable equipment of high-efficiency flame retardant, high dispersion and migration of flame retardant, synergy between flame retardant and smoke suppression, fiber flame retardancy and processability, fiber The problem of melt spinning and burning droplets is seriously contradictory.

In the future, flame retardant fiber will develop in four research and development directions: long-lasting green and high-quality flame retardant fiber, functional composite flame retardant fiber, comfortable flame retardant fiber and new high performance flame retardant fiber.

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

Project leader: Zhao Chuncai, deputy general manager of Xinfengming Group Co., Ltd.

The project has three innovations: one is the whole process engineering simulation and product development system innovation; the second is the process innovation of polyamide 6 polymerization; the third is the integration innovation of spinning key technology and equipment modularization. Through innovative research, we have established a high-efficiency preparation system for polyester and polyamide processes, achieving professional design and development, and leading the future development of the industry.

In the future, in terms of basic research, the project will realize polyester, polyamide copolymerization, spinning forming and structural evolution mechanism, and full process engineering simulation; in the key technologies, 3 to 5 original, system integration innovation and autonomy will be formed. IP polyester, polyamide key technologies for efficiently producing flexible system; application exemplary aspect, 5 to 8 having completed the driving effect of the demonstration projects and industrialization demonstration base, promote the efficient preparation of flexible polyester fiber capacity 4,000,000 t , polyamide 6 fiber capacity of 500,000 tons. Through these, the polyester and polyamide fiber flexible and efficient preparation technology has reached the international advanced level.

4. High-quality polylactic acid fiber and its textile scale preparation and application

Project leader: Professor Yu Muhuo of Donghua University

Polylactic acid fiber is the vanguard of the health, green and environmental protection industries. Biomass new fibers include natural fibers, regenerated fibers, and synthetic biomass fibers. Polylactic acid fiber belongs to synthetic biomass fiber. The raw material comes from agricultural and sideline products such as cassava, corn cob and straw. Its production process consumes low energy, only 66% of PET, and the amount of carbon dioxide produced during the production process is 0.3 kg. Other polymers Both are above 2 kilograms and are low carbon environmentally friendly products. Since the polylactic acid fiber properties similar to PET, it is expected to replace part of polyester.

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

Project leader: Zhang Xianming, Ph.D., Zhejiang University of Science and Technology

The project has two landmark achievements. One is the development of a second-generation melt polycondensation reactor to successfully prepare a polyester melt with an intrinsic viscosity of more than 1.05 dl/g, and successively develop pilot and industrial grade viscosity-increasing reactors. The unit has been successfully commissioned on the production line. Second, the production capacity of the polyamide 66 airbag wire production line has reached 10,000 tons/year. The Shenma laboratory has tested the airbag wire strength to 8.25 cN/dtex and the industrial wire strength to 8.97 cN/dtex.

6. Bio-based polyester and polyamide high-efficiency polymer spinning technology

Project leader: Liu Xiucai, Chairman and CEO of Kaisai Bio-Industry Co., Ltd., and Jiangsu Shuwang Gaoke Fiber Co., Ltd.

Liu Xiucai highlighted the progress in the development and industrialization of Kaiser Bio-based polyamide. Kaisai Bio-Industrial Co., Ltd. is the world's first and currently the only industry that uses biotechnology to implement long-chain diacids, biobutanol, biopentylamine and other revolutionary industrial technologies. In recent years, Kaiser Biotech has developed bio-based pentamethylenediamine and produced bio-based polyamide with excellent performance. In 2014, it completed the industrial test run. In 2016, Kaisai Bio-Uusu Wusu production base started construction. It is expected to realize an annual production capacity of 50,000 tons of bio-pivalamethylene diamine, 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 in the near future.

When talking about the objectives of the project, Bian Shuchang pointed out two of the key technologies to solve. Among them, the bio-based PTT continuous polymerization and melt direct spinning technology need to solve the bio-based PTT high-efficiency catalysis and thermal stabilization technology, the development of multi-chamber reverse process esterification, two-way fast switching vacuum system, low-temperature five-cylinder continuous polymerization technology and key Equipment, to overcome the key technology of large-capacity bio-based PTT melt direct spinning. Bio-based PTT functionalized and differential spinning technology needs to solve the problem of developing exclusive composite spinning boxes and components, and preparing bio-based PTT and PET, ECDP, PBT and other two-component composite fibers to form 60,000 tons/year bio-based PTT Demonstration of polymer spinning engineering technology.

7. Development and application of high quality raw liquid coloring fiber

Project leader: Jin Jian, Senior Engineer, China Textile Science Research Institute

The raw liquid coloring fiber is a coloring agent added to a spinning solution or a melt, and is spun to obtain a colored fiber, thereby eliminating the dyeing process, reducing waste water discharge, and having outstanding environmentally friendly characteristics. At present, the production of coloring fiber for raw liquid in China is about 4.5 million tons, which accounts for only about 10% of the total production of chemical fiber. There is huge room for growth in the future.

The project has three objectives: one is to focus on polyester fiber and polyamide fiber; the other is to break through the key core technologies in all links of the whole industry chain; the third is to establish the quality of pigment/dye, masterbatch and fiber integration. And basic color detection methods and standard systems, establish fiber preparation and application technical specifications and databases. Focusing on these three goals, we have developed a high-efficiency preparation and high-level application industrialization technology for high-quality raw liquid coloring fibers, improved the overall level of China's raw liquid coloring fiber industry technology innovation chain, and improved the overall competitiveness of the industry.