How can carbon fiber composites catch up? Linkage of upstream and downstream industrial chains to find Chinese solutions
In recent years, my country’s carbon fiber industry has continued to develop at a rapid pace, and production technology, production capacity and material applications have continued to achieve new breakthroughs. A group of outstanding local companies that continue to work hard in the carbon fiber industry have continued to enhance their R&D capabilities and market competitiveness. However, there is still a gap between the performance and application of carbon fiber composites and the international advanced level. How to form a series of Chinese-style solutions through the linkage of upstream and downstream industrial chains in the future? At the 10th National Carbon Fiber Industry Development (Langfang Anci) Conference on April 3, experts from the fields of carbon fiber production, composite material production and downstream applications conducted discussions.
The carbon fiber industry has entered a critical period of connecting the past and the next
In 2021, China’s carbon fiber demand will reach 62,400 tons, higher than the global average, and is highly dependent on imported products, mainly from Japan, the United States and other countries. Leading carbon fiber company. In the future, with aerospace, wind power blades, carbon/carboncomposite materials, etc. Driven by the demand from emerging industries, China’s total carbon fiber demand is expected to reach 91,600 tons in 2023, and the market share of domestic carbon fiber will also gradually increase. China’s carbon fiber market has maintained a growth trend, growing from 3.81 billion yuan in 2017 to 10.64 billion yuan in 2021, with an average annual compound growth rate of 29.3%. It is expected that China’s carbon fiber market size will reach 15.37 billion yuan in 2023.
As the market size of carbon fiber downstream hot industries such as new energy, wind power, and photovoltaics continues to grow at a rapid pace, the process of domestic substitution in the carbon fiber industry is accelerating. However, compared with the world’s leading companies, domestic carbon fiber still has a large gap in production technology, application technology, product performance, quality and cost competitiveness. The problems of low-level construction in the domestic carbon fiber industry are prominent, the industry is large but not strong, the foundation for original innovation in technology and application is still relatively weak, and high-end applications are highly dependent on foreign countries. Problems such as high-end applications are still prominent.
As an important basic material for new energy, high-end equipment, aerospace and other strategic emerging industries, the carbon fiber industry needs to further increase innovation, achieve self-reliance, independent control, and overcome difficulties through upstream and downstream interoperability, industry, academia, research and application. , to promote the development of carbon fiber industry.
Huang Xiangyu, deputy general manager of Sinopec Shanghai Petrochemical Co., Ltd., said that carbon fiber and its composite materials have broad application prospects and high technical content. They are an important foundation for ensuring national defense security and high-end industrial development. The key core technologies that cannot be obtained are the key directions that my country’s new materials industry urgently needs to catch up.
At present, China’s carbon fiber industry has entered a key strategic development period that connects the past and the future. Huang Xiangyu suggests that carbon fiber companies adhere to the national strategic needs and industrial upgrading needs as the driving force, and give full play to the talents of China’s carbon fiber industryAdvantages, technological advantages, and brand advantages, use the industrial chain to lay out the innovation chain, use the innovation chain to extend the industrial chain, actively promote collaborative innovation between upstream and downstream carbon fiber enterprises in university research institutes, and accelerate the development of key equipment and other technologies for carbon fiber production processes. Continuous innovation and product iteration upgrade. At the same time, we will accelerate the application research, demonstration and promotion of carbon fiber composite materials in various fields, and jointly form a series of Chinese solutions from raw filaments, carbon fibers to intermediates and composite parts to promote the high-quality development of the carbon fiber industry and assist Chinese modernization. .
Carbon fiber composites require continuous development and innovation
Zhu Meifang, academician of the Chinese Academy of Sciences and dean of the School of Materials Science and Engineering of Donghua University, said that carbon fiber is a key material needed by the country, and its application level reflects the country’s core competitiveness. At present, in industrial production, high-performance PAN-based carbon fibers used in large aircraft and high-speed rail account for a large proportion (92%), high-purity ablation-resistantviscose-based carbon fibers and high modulus Asphalt/lignin-based carbon fibers account for only 1% and 7% respectively.
According to Shi Dongmei, chief technical engineer of the High Technology Research and Development Center of the Ministry of Science and Technology, developed countries attach great importance to the basic support and leading role of new materials and actively formulate new materials development strategies, including the Materials Genome Project (USA) and the Industry 2050 Strategy (UK), Nanotechnology and Materials Technology R&D Strategy (Japan), 2030 Materials Strategy (Russia). Developed countries have intensified their monopoly on high-end materials, and the development trend of integration and clustering is prominent; they have laid out cutting-edge new materials, continued to lead the original innovation of materials, and seized the commanding heights; they attach great importance to the security of the supply chain of key materials, and key mineral resources have become the focus of competition between major powers; they continue to strengthen new materials Innovation support system, focusing on industrial development model and talent training. From the perspective of technological development trends, greater reliance is placed on new methods such as computing science and artificial intelligence, forming a new paradigm of data-driven new material research and development, accelerating the speed of technological innovation, and significantly reducing the iteration cycle of new materials; new materials are becoming more personalized and composite , multifunctional, more resistant to extreme environments, and closer to the development of performance limits; the discovery of new materials and performance improvement are moreRelying on breakthroughs in basic science, cross-disciplinary and technological integration; the concept of low-carbon sustainable development is deeply rooted in all aspects of material development, with more emphasis on environmental friendliness, green energy saving, simple ingredients, one material with multiple uses, recycling, etc.
As a national strategic advanced material, fiber composite materials have broad application space in aerospace, rail transportation, energy, construction, life and other fields. Compared with traditional materials, carbon fiber composite materials have lower density and higher strength, and with the continuous advancement of carbon fiber composite manufacturing technology. Carbon fiber composite material technology continues to develop and is widely used in many fields. For example, lightweight technology reduces energy consumption by reducing product weight; recycling technology reduces the consumption of natural resources through recycling and realizes a circular economy. It can further reduce energy consumption and environmental pollution, which is of great significance to the development of green economy.
Experts from the China Chemical Industry Information Center said that in the context of green development, carbon fiber composite materials also need continuous development and innovation: From the source, the production of carbon fiber composite materials requires a large amount of energy and raw materials, so the key to green development is Develop new production technologies and alternative raw materials. For example, using biomass to make carbon fiber, using renewable energy for production, converting organic waste into raw materials, etc.
From a process perspective, the production process of carbon fiber composite materials will produce a large amount of waste water, waste gas and waste solids, which will have a negative impact on the environment. Therefore, green development focuses on developing new production processes and reducing waste generation. For example, we adopt a circular economy model to recycle discarded carbon fibers and develop efficient waste gas treatment equipment.
From an application perspective, the application of carbon fiber composite materials also needs to consider environmental protection factors. For example, products made of carbon fiber composite materials need to be sustainable and environmentally friendly, such as electric vehicles powered by renewable energy and sports equipment made of degradable materials.
It is reported that carbon fiber industry bases are being built in many places across the country. Hunan Yueyang Economic Development Zone will create “China’s Carbon Valley”, build a leading domestic high-performance carbon-based composite materials industrial park, establish a carbon-based composite materials industry research institute, and create a national and provincial carbon-based composite materials engineering research center, which is expected to Fill the gap in the field of high-performance carbon-based new materials in my country and strive to become a highly competitive domestic high-performance carbon-based composite material design and manufacturing enterprise and supplier. The new materials industry cluster in Hebei Langfang High-tech Zone is led by Changsheng Technology’s high-performance carbon fiber with a total investment of 5 billion yuan and Feize Composite Carbon Fiber Composite Materials project with a total investment of 3.1 billion yuan. /font>has begun to take shape. The Beijing-Tianjin-Hebei “Carbon Valley” industrial base being built will rely on the existing industrial development foundation and key projects, and will use 3 to 5 years to cultivate and introduce more than 20 key enterprises with strong independent innovation capabilities and brand competitiveness. And a number of supporting upstream and downstream enterprises, gradually forming a complete carbon fiber industry chain from “carbon fiber – intermediate materials – composite materials – multi-component products”, achieving breakthroughs and catching up in key additives, key equipment research and development, and downstream material applications, and strive to achieve breakthroughs and catch up. Create a strategic full-chain industry with main business revenue exceeding 10 billion and core competitiveness.
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