 |
The reporter learned from Harbin Institute of Technology that the internationally renowned periodical "Advanced Materials" recently reported a major breakthrough in the carbon nanotube fibers of the research and development team of Prof. He Xiaodong, Institute of Composite Materials and Structures, Harbin Institute of Technology. . The team used the two-step method to prepare the first carbon nanotube spring in the world. The reviewer of Advanced Materials highly praised this research result and called it a very charming structure.
This achievement was mainly completed by Higashidahe Xiaodong, Li Yibin, Cao Anyuan and their doctoral student Shang Yuanyuan. According to Li Yibin, the traditional springs are generally made of spring steel to control the motion of the parts, ease the impact or vibration, store energy, and measure the force. The springs invented by the HIT research and development team are made of steel. Strong carbon nanotube composition. The R&D team adopted the two-step method for the first time in the world. First, a carbon nanotube film was produced, and then the carbon nanotube film was spun into a carbon nanotube spring using a spinning technique. The spring has a small density, good electrical conductivity, good flexibility, high specific strength, excellent elasticity, especially in terms of elongation shows unparalleled advantages, its maximum elongation can reach 285%, while the traditional carbon The nanotube fiber elongation is only 5%-10%. When the tensile strain is 20%, the carbon nanotube spring maintains a stable spring constant (100 N/m) after 1000 cycles of stretching, and the electrical conductivity is almost not attenuated.
The diameter of the carbon nanotube spring can reach hundreds of micrometers, and the length can reach several centimeters. The spinning structure of the carbon nanotube has a wide application prospect and is expected to be applied to a retractable conductor, a flexible electrode, a micro strain sensor, a super capacitor, and an integrated circuit. Solar cells, field emission sources, energy dissipating fibers and other fields provide possibilities for the preparation of macroscopic carbon nanotube electronic devices, and are also expected to be applied to medical devices such as tension sensor bandages. This new structure can also be developed into a versatile carbon nanotube fiber composite material to be utilized. (Reporter Li Liyun)
Socket,Plug Socket,Equal Socket
Fenghua Jade Motor Co., Ltd. , http://www.composite-hose-supplier.com