"Textile Light" Weihai Set Up, The Industry'S Big Coffee Sharing Carbon Fiber Weaving / Molding Processing Technology

Carbon fiber is an indispensable strategic new material for national economy and national defense construction. It is one of the most important reinforcements of advanced composite materials. It has high technology content, wide radiation and strong power, and is widely used in aerospace, energy equipment, transportation, construction engineering, physical education, leisure and other fields.

In order to strengthen the industry exchange, promote the development of carbon fiber braiding / molding technology, enhance the performance of carbon fiber products, meet the needs of national defense construction and various fields of national economy, and further promote the scientific and technological progress in the textile industry, in November 26th, the "textile light" carbon fiber weaving / molding processing technology and applied scientific and technological achievements promotion activities organized by the China Textile Industry Federation science and technology development department, the textile optical science and technology education foundation and the textile industry science and technology development center were held in Weihai, Shandong province. The activities include the Weihai development and Reform Commission, the Weihai Lingang Economic and Technological Development Zone Management Committee, the National Engineering Laboratory for carbon fiber preparation and engineering, the Shandong carbon fiber technology innovation center, and the school of materials science and engineering of Qiingdao University.

The activity has invited many experts in the related fields of textile industry chain. The conference focuses on the application of high-performance fibers and composite materials represented by carbon fiber in launch vehicles, satellites, Universiade aircraft and high-end defense industry high-end equipment. It also focuses on the applications of high-voltage transmission cables, equipment manufacturing, transportation, new energy vehicles, medical, wind power, sports and leisure, and explores how to build the whole industry chain from raw silk to carbon fiber prepreg / braiding / molding to final products, to meet the needs of national defense and national economic fields, and to promote the development of high-performance fibers and composite materials represented by carbon fiber.

Director Peng Yanli, Vice Minister of science and Technology Development Department of China Textile Union, Yu Ping, Secretary General of textile science and technology education foundation, Zhang Cuizhu, deputy director and deputy director of the Weihai development and Reform Commission, member of the Party Working Committee of Weihai port economic and Technological Development Zone, deputy director of the administrative committee, Cai Shuguang, director of the National Engineering Laboratory of carbon fiber preparation, and Li Shu Xiang, chief scientist of the Weihai composite material Limited by Share Ltd, the deputy director general of Shandong carbon fiber technology innovation center, general manager of Weihai development Fiber Co., Ltd., textile research institutes and scientific research personnel in charge of higher education institutions, the relevant technical personnel and management personnel of the national carbon fiber production, weaving and molding processing enterprises, the key laboratory leaders of the industry, and the responsible person of the industrial technology innovation center, etc., attended the meeting. Gao Yong, vice secretary of the China Textile Industry Federation party Committee and secretary general, vice president Li Lingshen, deputy director general of China Textile Union, director of science and technology development department, and textile science and technology education foundation. The meeting was chaired by Li Lingshen, Peng Yanli and Wang Yuping respectively.

Li Lingshen presided over the leadership session.

Gao Yong said in his speech that the high quality development of textile industry depends on the upgrading of intelligent manufacturing, new materials and industry. Carbon fiber as a high-performance material is not only a representative material of the textile industry, but also a representative of China's new material field. All countries are competing to develop new materials. Other countries are also concerned about the development of high-end fibers in China. The textile industry has not solved the problem of dressing in traditional sense. With the development of new materials, it has penetrated into all aspects of human life. In recent years, China's carbon fiber has developed rapidly. T700, T800 and T1000 have been realized, and the capacity is gradually expanding. In the future, we need to work in two directions. On the one hand, we should work hard on fiber preparation, improve consistency, maturity and quality. On the other hand, we should consider the application and promotion of fiber market. All links should consider how to expand the application area of carbon fiber, not only to focus on aerospace, military industry, but also to pay attention to a wide range of civilian areas, such as transportation, health, power transmission and other fields. Special knitting technology in carbon fiber technology is very important. We have a great gap with foreign countries. He hopes to further mature the carbon fiber processing technology through this promotion.

Zhang Cuizhu reviewed the history of the foundation's development. She hoped that more companies would donate to the foundation in the future and work together to make greater contributions to the scientific and technological work in the industry. This public welfare promotion campaign is the eleventh public interest promotion campaign supported by the textile science and technology education foundation this year. It is also the fifty-fifth of the foundation's support for the promotion of public welfare scientific and technological achievements in 2010. She said that most of the scientific and technological achievements introduced at the technology promotion conference were awarded the "textile light" Technology Award project, which was donated by Ningbo Dafa Chemical Fiber Co., Ltd. and Shandong Yingli Industrial Co., Ltd. It is hoped that the technical experts will fully exchange and learn from each other.

In the keynote session, 9 experts from universities and enterprises shared the contents of "14th Five-Year" carbon fiber technology development, technology, equipment, development, application, patents and other contents.

Keynote Presenter: Peng Yanli, director of science and Technology Development Department of China Textile Industry Federation

Speaker: Professor Xu Lianghua of Beijing University of Chemical Technology

Topic: "14th Five-Year" carbon fiber technology development outlook

Xu Lianghua introduced the development status, existing problems and future development trend of domestic carbon fiber. On the whole, China's carbon fiber has entered a stage of steady development, and the domestic polyacrylonitrile carbon fiber technology system has been established. The theme technology direction is clear, which basically meets the needs of the current application in the national textile industry. Specifically, carbon fiber technology R & D strength is continuously strengthened, enterprise technological innovation vitality is unprecedented, independent innovation ability has been strengthened, hematopoietic function has been continuously improved, military application has achieved remarkable results, and carbon fiber has been making low-cost progress. The main problems lie in the insufficient performance of national defense industry, the lack of consistency in quality and stability, instability in the industrial field, poor technology and high price. The future development goal of carbon fiber technology is demand traction + technology promotion, from the current stage of demand traction to material selection application. The principles of technological development are innovation promotion, application guidance, integration of the army and the people, the support of the people, the breakthrough of key technologies, the support of independent innovation and the support of industrial development. We have made breakthroughs in developing and developing high-end applications of carbon fiber.

Speaker: Professor Chen Li of Tianjin University of Technology

Key technologies and applications of carbon fiber three dimensional braiding and composites

Chen Li introduced the design, manufacture and application of multi axial composite materials. Three dimensional woven structure is the fastest growing form of reinforcement. Multi axial woven composites have five yarns: warp, weft, tie yarn, + theta skew yarn and theta skew yarn, which can improve in-plane shear properties. The advantage of multi axial woven composites is that the in-plane fiber orientation angle and stacking order are designed and the out of plane properties are better than laminated composites. The conclusion is: a new type of multi axial woven composite material has been developed. "Skew yarn layer can be flexibly designed. Multi axial woven composites have excellent in-plane shear properties, and the impact resistance of multiaxial woven composites is better than laminated composites. A multi axial woven composite solid shaft has been developed. The multi axial woven composite material solid shaft has excellent torsion resistance. Carbon fiber three-dimensional braiding and its composite materials are widely used in the aerospace field.

Speaker: Professor Xu Weilin, Wuhan Textile University

Topic: modification of carbon fiber surface and construction of its color

Due to the special characteristics of high performance fiber structure, it is difficult to dye. Xu Weilin introduced the dyeing of high quality carrier of aromatic high performance fiber, the construction of surface color of aromatic high-performance fiber products, and the color nano layer assembly of atomic deposition on the surface of carbon fiber. The colorful world has put forward new color requirements for high-performance fibers, such as colorful spacesuit, various color shell computers, airships, and high temperature solder joints without black spots. Starting from the physical and chemical structure and properties of fiber materials, the research method of unconventional color construction is studied, and the corresponding equipment and technology are developed to achieve the high quality and colorful colors of high-performance fibers and their products. The advantage of this method is to simulate the chromophoric mechanism of biological structure in nature, and to prepare a non coloured structure color fiber membrane on carbon fiber and its fabric surface, which can effectively solve the problem of carbon fiber color rendering. The simple pattern and large area preparation of the fabric surface color coating are achieved, and the prepared film has good color stability and service durability, and has practical application prospects. The ultrafine, uniformly dispersed, controllable structure of metal and its oxide nano film can be prepared by ALD, which can be used for the structural coloring, oxidation resistance, self cleaning and absorbing properties of carbon fibers. ALD technology realizes the functionalization of carbon fiber and its fabric, and eliminates the problem of solution residue caused by traditional technology, avoids industrial pollution and saves energy.

Speaker: Professor Sun Yize of Donghua University

Topic: carbon fiber special braiding technology and equipment and its industrialization

Sun Yize introduced the theoretical analysis of the preform braiding technology for high performance fiber composites, and related equipment technology and products. The friction and wear mechanics model and theory of yarn in weaving are established in the analysis of friction and wear mechanics. It can predict the friction and wear condition of yarns in different braiding structure parameters. In the study of the large scale key phase sequence distribution in deep cross knitting, the conclusion is drawn that when the number of braided layers increases, as long as the first layer of sediment is distributed and the initial condition is given, the arrangement of all tracks in the path of movement can be calculated. Therefore, according to the different structure of the final fabric, different initial conditions are selected, and the corresponding arrangement of the lake is calculated. This algorithm greatly facilitates personalized weaving of preform structures with different cross sections, especially for 3D deep cross knitting with large number of layers and large scale sediments. Sun Yize also introduced the second generation 3D automatic knitting machine developed by Donghua University.

Speaker: Yu Mingming, associate professor of Shanghai Univer

Topic: carbon carbon composite design, development and Application

Yu Mingming introduced the development, design, development and application of carbon carbon composites. Carbon carbon composites (C/C) are carbon matrix composites reinforced with carbon fibers or graphite fibers. They are characterized by low density, ablation resistance, thermal shock resistance, high specific strength, stable performance at high temperature, and excellent wear resistance. In 1970s, C/C composites were first applied in aviation, aerospace and military industries. In 1990s, C/C composites were in the new process development and civilian stage, aiming to reduce costs and shorten the production cycle. In twenty-first Century, C/C composites have become one of the new key materials. Carbon / carbon composite materials can be used in the photovoltaic industry for monocrystalline silicon crucible. The automobile brake pad can significantly reduce the structural quality of the brake disc and has a long service life. Carbon and carbon composites are also used in aircraft brake discs, solid rocket motor throat linings, hypersonic vehicle front edges, and new solid rocket motors. The research direction of the composite materials research center of Shanghai Univer includes C/C preform (whole felt), C/C composite material, rubber absorbing and breathable material, and lightweight high-strength fire resistant fabric. In the long term, it has been equipped with solid rocket motors for the national high and new engineering models and various key strategic and tactical missiles, and equipped with rocket, naval, land and air forces. C/C throat liner should be used in various types of rocket engines. Some of them are displayed on the National Day 60th anniversary, the victory in the war of resistance 70th anniversary, and the 90th anniversary parade in the army. It provides supporting materials for rendezvous and docking of Shenzhou eight, Shenzhou nine, Shenzhou ten and Shenzhou eleven with Tiangong-1 and two.

Speaker: Ji Jianqiang, deputy general manager of Changzhou Hongfa new material Polytron Technologies Inc

Topic: multi axial warp knitting equipment and key technologies and industrialization of composite material preparation

Ji Jianqiang introduced the research and development background, core technology and industrialization application of multi axial warp knitting technology and equipment and key technology of composite materials and industrialization projects. The development trend of composite materials is low carbon, light weight, environmental protection and innovation, among which lightweight is an everlasting trend. Composite material is the best way to meet the needs of lightweight, low cost and high performance materials in defense industry, aerospace, wind power, rail transportation, new energy vehicles and other industries. At present, the technical bottlenecks in the development of composite materials are to enhance the variety of fabrics, the high cost of high-performance fibers, the low efficiency of composite materials, and the large-scale and mass application. The advantages of multiaxial warp knitting are high modulus of strength, quasi isotropy, good shear resistance and good resistance to delamination. The National Aeronautics and Space Administration Research Report once said, "multi axial warp knitted fabric and its stitching technology are the development trend of large composite precast parts in twenty-first Century." In response to major national demand, the company has developed multi axial warp knitting equipment and key technologies for manufacturing composite materials, and has been industrialized. The overall technology has reached or surpassed the technical specifications of similar products at home and abroad, and has been applied to wind power blades, new energy vehicles and other fields in batches.

Keynote Presenter: Wang Yuping, deputy director of science and Technology Development Department of China Textile Industry Federation

Speaker: Cong Zongjie, general manager and senior engineer of Weihai development Fiber Co., Ltd.

Topic: industrialization preparation technology of high strength PAN based carbon fiber based on wet spinning process

In his report, Cong Zongjie introduced the development of PAN spinning technology, the industrialization technology of wet spinning process in China, and the localization equipment for wet spinning process. China's aerospace industry has long been using carbon fiber prepared by wet spinning process as the representative of the national defense field. The research and development of the wet spinning process with carbon fiber has important strategic value and practical significance to ensure stable production in China. Due to the lack of proper manufacturing technology of high performance carbon fiber precursor, the quality of domestic carbon fiber has been lingering at a low level for a long time. The company has developed a new raw silk preparation technology, creating a carbon fiber variety with excellent surface structure of T700 grade carbon fiber and T300 grade carbon fiber. It has independent intellectual property rights and technology has reached the international advanced level. The new raw silk preparation technology has promoted the transformation and upgrading of the localization technology of PAN carbon fiber, and laid the foundation of the mainstream technology of the domestic carbon fiber.

Speaker: Lang Minghua, deputy director of Jiangsu Australia composite Mstar Technology Ltd Engineering Center

Topic: multi domain applications of carbon fiber and composite materials

In his report, Lang Minghua introduced the characteristics of carbon fiber, the comparison of molding technology, and the application field of carbon fiber. The most widely used areas of global carbon fiber are wind power, aerospace, sports and leisure, and automobiles. The main application fields of domestic carbon fiber are sports leisure, wind power and building reinforcement. It is applied to satellite solar cells and satellite stents in space applications. It is applied to missile shells, nozzles and warheads in missiles. In terms of civil aviation anti aircraft, Boeing 787 aircraft fuselage, frame, long truss, floor beam, joist beam, wing before and after, wing skin and wing rib and other main structural parts, all use CFRP, Boeing 787 of the structural weight of composite materials accounted for 60%, aluminum alloy 21%, steel 8%, titanium alloy 11%. In the past, carbon fiber composites were only used in sports cars, racing cars and refitted cars, and now they are mostly used in vehicle lightening. In wind power, the total amount of carbon fiber used in fan blades in 2016 reached 18000 tons, and it is expected to reach 30000 tons in 2020. The main applications are prepreg and pultrusion. In addition, it has many applications in electronic products, health care, building enhancement, energy and sports leisure.

Speaker: Ju Anqi, associate professor of Donghua University

Topic: carbon fiber application and patent analysis

Juanqi introduced the development trend and application fields of carbon fiber, and shared the patents of carbon fiber.

After the meeting, all the guests attended the Weihai carbon fiber industrial park and Weihai development Fiber Co., Ltd.