In recent years, China's high-speed rail, which was previously independently designed and developed and has fully owned independent intellectual property rights, has frequently appeared, constantly refreshing the international perception of China's high-speed rail. At present, there are nearly 90 high-speed rail lines in China, nearly 30,000 kilometers of lines, and more than 3,000 online high-speed rail vehicles, accounting for more than two-thirds of the world's. The scale of high-speed rail applications is mainly in China. Behind the rapid development of high-speed rail, carbon fiber has bent an indispensable role. Energy-saving, environmental protection, comfort, and convenience of high-speed rail trains have become the future development direction of high-speed rail. Carbon fiber has been more and more concerned and adopted by rail vehicle development companies due to its excellent performance, and has great development potential!
The significance of carbon fiber on high-speed rail is mainly reflected in two aspects: light weight and safety:
Our track is continuously experiencing the leap from the "steel age", "aluminum age" to "carbon material age". Because carbon fiber is light and has a density of only 1.78 grams per cubic centimeter, which is similar to plastic, but its strength is more than 7 times higher than that of steel. The large use of carbon fiber components can reduce the proportion of traditional steel structures in high-speed rail bodies. The proportion of carbon fiber in high-speed rail will become larger and larger, and eventually the ultra-lightweight of high-speed rail will be realized. The ultra-lightweight of the high-speed rail as a whole is conducive to reducing the distortions encountered during continuous operation, directly reducing emissions, reducing carbon dioxide emissions, and ultimately achieving an increase in speed.
The operating speed of China's high-speed rail has now reached 300km / h. At this operating speed, the requirements for some parts of the car body are also higher. The carbon fiber composite material is lightweight, reduces impact, increases load, and adopts a carbon fiber reinforced composite material layer design, with a foam core in the middle, and the head cover made of carbon fiber composite material still has impact resistance and mechanical properties. Outstanding, can withstand high-speed impact of 660 km / h and static friction of 350 kN of 1 kg aluminum bomb; brake pads made of carbon fiber can have more braking friction, thermal shock, low braking noise, good wear resistance and wear The rate is lower than steel fiber brake pads, which has strong corrosion resistance and prolongs the life of the brake pads. The use of carbon fiber steering wheels increases the mechanical strength and impact resistance of ordinary materials by 35% and 20%, respectively. Panels, toilets, washrooms, seats, water tanks, front cover panels, roof panels connected to double-decker buses are laminated with a layer of flame retardant carbon fiber. In addition to flame retardant properties, it can also enhance the toilet. , Sanitary performance and corrosion resistance of washrooms, seats and water tanks.
At present, China's high-speed railway construction is in a period of prosperity. Through years of hard work and accumulation, China has fully mastered the core technology of high-speed railways, and the overall industry level has ranked among the world's most advanced. Go out and let the world see China's speed. Under this trend, the use of carbon fiber composite materials directly promotes the lightweighting of high-speed train displacements, making high-speed rail safer, and will also drive the high-speed rail manufacturing industry to achieve a new and progressive development, further increasing the "China Speed".
For more information about composite materials, go to November 28-30 of this year. The 4th China International Composites Technology Conference (4th China International Composites Conference, CCCM-4) will provide 52 academic + industry topics Exchange session, stay tuned!
The 4th China International Composites Technology Conference (4th China International Composites Conference, CCCM-4) will be held at the Zhuhai International Conference Center on November 28-30, 2019. The theme of the conference is "composite new materials, set the future" as the theme, set up more than 50 themed academic sub-forums and multiple characteristic sub-venues. It is estimated that 3,000 professionals will attend the conference. The exhibition area of the 3rd International Composite Materials Industry Innovation Achievements Technology Exhibition held at the same time is planned to be 20,000 square meters. The conference invites experts and representatives of enterprises in the field of composite materials from around the world to focus on the dynamics, frontiers and trends of composite materials disciplines and industrial development, and to show the latest technologies and applications of composite materials. At the conference, organize in-depth exchanges and connections between academic and industrial circles, discuss industry development trends and guidance, explore the profound impact of material compounding on economic and social development, and promote the effective docking of the composite material industry chain, innovation chain, service chain, and capital chain. Improve the innovation and entrepreneurship ecology of the composite materials industry.
The 3rd International Composite Materials Industry Innovation Achievements Technology Exhibition held at the same time has already included China Aviation Development and Aviation Materials Institute, Institute of Chemistry, Chinese Academy of Sciences, National Center for Nanoscience and Technology, 306 National Key Laboratory of Metal Matrix Composites of Shanghai Jiaotong University, Donghua Fiber State Key Laboratory of Material Modification, State Key Laboratory of Mechanical Manufacturing System Engineering of Xi'an Jiaotong University, State Key Laboratory of Structural Analysis of Large Industry and Industrial Equipment, Key Laboratory of Ultra-High-Temperature Structural Composites of West Institute of Technology, and dozens of research institutes and key laboratories, CRRC Sifang, AVIC General Aircraft, AVIC Composites, Sinoma Science and Technology, Guangwei, Zhongfu Shenying, Yinlong New Energy, North Glass Institute, Aosheng, Jinfei, Research and Development Instruments, Aerospace Sea Eagle, Changshu Auto , Tianjin Aistar, Aidasso, He's and other hundreds of companies transformed.
CCCM-4 is located in the core area of Guangdong-Hong Kong-Macao Greater Bay Area. It coincides with the 70th anniversary of the birth of the motherland, and will bring together talents from all walks of life to form a consensus of dedication and dedication to serve the country. To a large extent, the scientific development of composite materials Leave a wonderful mark in history.