Armed with a fighter jet to drive a drone, how to use carbon fiber better

The "2019 High Performance Fiber and Composites Industry Innovation and Development Conference" with the theme of "Application Leading, Innovation Driven" was held in Weihai. The meeting was hosted by Shandong New Materials Industry Association, Silicate Society, Weihai City Bureau of Industry and Information Technology, and Weihai City Lingang Economic and Technological Zone Management Committee. Weihai Guangwei Composite Materials Co., Ltd. (hereinafter referred to as “Guangwei Composite Materials” ") to undertake. Academician Du Shanyi of the Chinese Academy of Engineering, Zhang Wei, deputy mayor of Weihai Municipal People's Government, Wei Huazhen, chief scientist of the Fifth Institute of China Ordnance Industry Group, Xu Lianghua, professor of Beijing University of Chemical Technology, and Chen Liang, chairman of Guangwei Fucai attended the meeting.

The meeting mainly discussed the application status of carbon fiber and its composite materials in aerospace, weapon industry, energy and other fields, as well as the future application prospects, and highlighted the achievements of the leading company Guangwei Composite in product application. At the same time, it also explores the current development hotspots and future development trends of carbon fiber and its composite materials industry.

"Military and civilian" business goes hand in hand

Guangwei Composite Materials Leading Advantage

Relevant statistics show that the total carbon fiber production capacity in the world in 2018 is 154,800 tons, and the total demand is 92,600 tons. The world's major carbon fiber producers include Hexcel, Zoltek, SGL in Germany, Toray, Toho and Mitsubishi Chemical in Japan, Taiguang Industry in Korea, Hyosung Group, etc. . After nearly a decade of rapid development, China's carbon fiber industry has rapidly broken through and continuously improved in terms of technology level, industrialization and equipment, and has grown into an important “one pole” in the global carbon fiber market. In 2018, the total demand for carbon fiber in China is about 31,000 tons.

In China's carbon fiber industry, Guangwei Composite Materials, headquartered in Weihai, is one of the leading companies in China's carbon fiber industry.

According to public financial report, in the first quarter of this year, Guangwei Composite Materials achieved revenue of 435 million yuan, a year-on-year increase of 60.35%. The net profit attributable to shareholders of listed companies was 158 million yuan, a year-on-year increase of 82.88%.

At the meeting, Lin Fengsen, chief engineer of Guangwei Composite Materials, made a keynote report on the development and application of Guangwei Carbon Fiber. Lin Fengsen introduced that after successfully listing in the Shenzhen Stock Exchange in September 2017, Guangwei Composites implemented the “521” development strategy to accelerate the development of the entire industrial chain development model, namely: “Adhere to the development of five major industries, two platforms and one park. strategy". Among them, the five major industries refer to: the expansion of the fiber fiber and fabric business, the general new material section of the main prepreg and dipping cloth business, the new energy material section of the wind power and cable business, and the main aerospace industry. And the composite materials segment of the rail transit business and the Guangwei precision machinery segment, which specializes in the precision machinery and aerospace weapon cabin business. The two platforms include: National Engineering Laboratory for Carbon Fiber Preparation and Engineering, Shandong Carbon Fiber Technology Innovation Center, and Nationally Recognized Enterprise Technology Center. A park refers to the national new material (carbon fiber) industrial base - carbon fiber industrial park.

In the carbon fiber plate, Guangwei Composite has mastered the wet process and dry-jet wet spinning process, and can produce high-strength, high-model, high-strength and high-model carbon fiber. The product can meet the independent supply demand of carbon fiber materials in China's military industry. According to reports, the high-strength series of carbon fibers currently produced by Guangwei Composites include CCF300, CCF700G, CCF800H and CCF1000. The high-mode series of carbon fibers produced include CCM40J, CCM46J, CCM50J and CCM55J. The low-cost series of carbon fibers produced include CCF700S and CCF800S. Production of 24K large tow carbon fiber.

It is also worth noting that in the past few years, Guangwei Composite Materials has made great efforts in the civilian sector and has become an important supplier of the global wind power “giant” Vestas wind power carbon beam. Its civil business has also become a new growth point for the company's performance.

According to its publicly released financial report, in 2018, in the company's annual revenue of 1.364 billion yuan, wind power carbon beam business achieved sales revenue of 521 million yuan, accounting for 38.2% of total revenue, revenue growth of up to 99.89%, Become an important business support for the company.

"With the continuous improvement of the industrialization technology level, the company actively develops civilian carbon fiber and its composite materials products, and its business continues to extend downstream, actively cultivates the carbon fiber application market, and implements military-in-the-military, military products, military and civilian sharing, and civilian maintenance. The military and civilian integration development strategy of the interactive development of military and civilian products.” Guangwei Composite Materials expressed this in its 2018 annual report.

"Use out" is the last word.

In the global carbon fiber market, aerospace is the most important application market for carbon fiber materials in the past few decades. Especially in the military aerospace industry, carbon fiber and its composite materials occupy an irreplaceable position. In recent years, with the continuous development of the application market, wind power, energy, rail transit, etc. have also become important application markets for the new rise of carbon fiber and its composite materials.

Relevant statistics show that in the total demand of global carbon fiber of 92,600 tons in 2018, the application of wind power market accounts for about 23%, the application of aerospace accounts for about 23%, and the application of sports and leisure accounts for about 15%. The automotive sector accounts for approximately 12% of applications.

For domestic carbon fiber, how to achieve "application leading, innovation drive", how to solve the problem of how to better use the product, especially how to better expand the application in the high-end field, is to enhance the comprehensive competitiveness of the product and the core competition of the industry. One of the key points of strength.

Relevant statistics show that in the total demand of China's carbon fiber 31,000 tons in 2018, the use of sports goods still accounted for the first, accounting for 22.6%; the second is the application in the field of wind power, accounting for about 22.6%; Applications in the aerospace sector account for only 3.2%.

At the meeting, Wei Huazhen introduced the application of carbon fiber and advanced composite materials in the military industry. He pointed out that carbon fiber composites can significantly reduce weight, improve maneuverability and save energy. Carbon fiber composites are the best choice for light weight of military and civilian equipment. At the same time, the carbon fiber composite material can impart heat-proof and heat-insulating, anti-ballistic energy, damping, corrosion protection, stealth, conduction, insulation, wave transmission and sound, light, electricity and magnetic functions.

"In the field of national defense, the use of carbon fiber and composite materials has become an important symbol of advanced equipment." Wei Huazhen said, "Although the main application market for carbon fiber is in the civilian sector, the capacity in the military field is limited, but it is very critical. Weapons and equipment should be more Light, faster, farther, stronger, stronger, more flexible, and more reliable, longer life, lower cost, carbon fiber and its composite materials will play the most important role. In the future, carbon fiber and its composite materials The amount used in the military field will increase significantly."

According to reports, carbon fiber and its composite materials in the field of weapons and equipment, including Army equipment, armored composite materials, composite armor, draped composite armor and other aspects, at the same time, can be used for anti-ballistic composite materials for human body protection. In the Army equipment, carbon fiber and its composite materials can be used in tank armored vehicles, artillery, archery and missile weapons, light weapons, and informational optoelectronic products.

In terms of application-driven product development, innovation and enterprise development, Guangwei Composite Materials is a model for domestic carbon fiber enterprises.

“From 2010 to now, CCF300 carbon fiber produced by Guangwei Composite Materials Co., Ltd. has entered the stable supply stage and is the largest supplier in the domestic military aviation field.” Lin Fengsen said.

According to reports, in the application of aerospace civil carbon fiber prepreg, 9A16 medium temperature curing epoxy resin prepreg produced by Guangwei Composite Materials has been produced in China National Aerospace Science and Technology Corporation No. 11 Research Institute, Rainbow 3, Rainbow 4 and A large number of applications have been applied to the main bearing structures such as the main body of the Rainbow 5 drone and the main beam of the wing. 9B14 flame retardant epoxy resin prepreg produced by Guangwei Composites has passed the national standard GB/T2406, motor car DIN5510, aviation CCAR/FAR25.853 flame retardant test, with excellent self-extinguishing flame retardant toxicity and excellent Anti-fatigue performance, can be used for a long time in the environment of -55 ° C ~ 80 ° C.

Talking about the main civilian application market that China's high-grade carbon fiber and its composite materials should grasp in the future, Wei Huazhen said that on the one hand, it should seize the application in the middle and high-end civilian fields such as rail transit and automobiles; on the other hand, it must seize the passenger aircraft in the civil aviation. Applications in the field of civil aviation, such as small aircraft and drones.

For domestic carbon fiber and its composite materials, how to further grasp the opportunity in the military industry, Wei Huazhen said that with Army equipment as an example, lightweighting is becoming more and more critical for Army equipment. The Army has a wide variety of equipment and large equipment. The annual order quantity of a single model is in dozens or even hundreds of units. The annual order quantity of the bullet weapon is hundreds or even thousands of, and there are dozens of models per year. Production. "The weapon industry will be the largest military demand market for carbon fiber in China, and it can effectively promote the localization of high-grade carbon fiber." Wei Huazhen said.