With the progress of science and technology and the continuous improvement of composite technology, the performance and technology of carbon fiber composites are becoming more and more perfect, and the application of the city is gradually widened. It is not only applied to aerospace and military industry. In addition, the applications of energy transportation, information communication and building materials and other areas are increasing, and the hot spots of carbon fiber development are mainly in the following aspects.
1. development of high performance and cheap carbon fiber
In recent years, the carbon fiber production companies in the development of high performance carbon fibers, such as cheap, focus on the development of Toray company in Japan in recent years for the development of tensile strength in 4000-5000MPa, and in the price of carbon fiber T300 with considerable variety, from the needs of the development of advanced composite materials, the tensile strength of carbon fiber T300 3530MPa has been unable to meet the demand, so the T300 carbon fiber has been gradually eliminated. In addition, in order to reduce the cost of carbon fiber, Toray company is also developing 18K and 24K “ ” large tow carbon fiber, large tow carbon fiber than the price of small tow carbon fiber 30%-40% and low price, performance and small tow carbon fibers, some even higher. In recent years, due to the advantages of large tow carbon fiber in price and got greater development.
2. research and development of carbon fiber and its composites with high thermal conductivity
The development of high technology, such as national defense industry and electronics industry, requires high thermal conductivity materials to make the heat release in the application process. High carbon fiber has become an important research direction of carbon fiber research. For example, the BPAMOCO company in the United States has successfully developed a asphalt based carbon fiber with a high ratio of thermal conductivity. Copper is a material with highest thermal conductivity in metal materials, its thermal conductivity is 394W/ (m·, K), and the thermal conductivity of pitch based carbon fiber developed by BP Amoco can reach 800-1000W/ (m·, K), which is 2.0-2.5 times of thermal conductivity of copper. The thermal conductivity of carbon fiber reinforced resin matrix composites prepared by the carbon fiber can reach 50-150W/ (m·, K), while the thermal conductivity of general die casting metals is between 50-100W/ (m·, K).
3. research and development of carbon fiber taught by different thermal expansion systems
Carbon fiber is mainly used for the preparation of composite materials, and its types of resin matrix composite, the thermal expansion coefficient varies greatly, in order to meet the different needs of the composite material preparation, preparation of different thermal expansion coefficient of carbon fiber is an important development direction of the carbon fiber research and production, such as Japan Grafil company developed a series of different thermal expansion coefficient of carbon fiber, the carbon fiber thermal expansion coefficient of coverage from the (-0.5*10^-6) ~ (0.5*10^-6K-1). It can meet the needs of a variety of composite materials.
Shenzhen CN Technology Co.,Ltd is a professional manufacturer and distributor of carbon fiber products. Such as roll wrapped carbon fiber tubes,Hot press carbon fiber sheets,cnc carbon fiber cutting,carbon fiber chamfered.