Dr. Li Yingyi, associate professor, presided over and participated in the national science and technology support plan, National Natural Science Foundation, Provincial Natural Science Foundation and provincial education department fund, and won the third prize of Jiangxi natural science in 2011 (the third prize). Research Fields: synthesis and application of carbon nanotubes, nano new energy materials, rare earth functional materials, LED optical conversion materials, lithium ion batteries, nano-reinforced composite materials, etc. Currently, he is the project team leader in the R & D team of KELAIWEI, have rich development experience.
KELAIWEI company has been working hard for the high-end nanomaterials industry in the motherland for 20 years, and has opened up markets at home and abroad with its independent development of technology and high-end technology services, have deep cooperation with enterprises in more than 60 countries KELAIWEI company has built the project of whisker carbon nanotube powder with annual production capacity of 300 tons, with nine national authorized patents, clevere relies on its own high-end nanomaterials research and development center to continuously provide customers with advanced nanomaterials and technical services, Tianjin carbon crystal electric heating plate.
KELAIWEI nano-carbon material company has invested 0.45 billion in the construction of whisker carbon nano-tube powder engineering, with the first-phase engineering capacity reaching 150 tons and the second-phase engineering design capacity reaching 150 tons, finally, the production capacity of the whisker carbon nanotube material of KELAIWEI company reached 500 tons per year. The income of this whisker carbon nanotube powder project is expected to reach an annual output value of about 0.5 billion yuan. KELAIWEI's products have been exported to more than 60 countries such as Europe and America.
Tianjin carbon crystal electric heating plate, Henan KELAIWEI Nano Carbon Material Co., Ltd. This month's training work was held as scheduled. The safety and environment department of our company actively carries out practical skills and safety training for enterprise employees. The formation of new employees' productivity requires rapid training. The enhancement of old employees' skills requires learning, communication and supplement. Our company pays attention to internal and external training and communication, and pays attention to practical training of employees' safety awareness, safety operation discipline, safety operation skills and other aspects.
There are many production methods of carbon nanotubes, among which the widely used production method of carbon nanotubes is arc discharge method, which is also a relatively simple method in the preparation of carbon nanotubes. Therefore, the purity of carbon nanotubes made according to this method is also low. In fact, this method obtains multilayer carbon nanotubes. Henan KELAIWEI Nano Carbon Material Co., Ltd has been able to produce whisker carbon nanotubes with purity up to 99.99%.
Synthesis of carbon nanotubes by hydrothermal method. Put the acidic solution of sucrose (according to the ratio of 1 to 19, and mix it with h2so4-sucrose solution) into the reaction kettle, and cool it to the indoor temperature after the reaction of 180 degrees high temperature within 12 hours, after centrifugal separation, ionized water is removed, and after washing and drying, carbon nanotubes of 1 nanometer to 2 nanometer length can be obtained.
Due to its special structure, the thermal conductivity of the product can reach 3000w/(m · K) under ideal conditions, but ordinary carbon nanotubes will introduce a large number of defects in the production process, causing the bending of carbon nanotubes, the crystal structure of carbon nanotubes is damaged, and the thermal conductivity is affected. The whisker carbon nanotubes belong to linear structure, and the crystal structure of carbon nanotubes can be retained to the maximum extent, the thermal conductivity of the product can be brought into play to a greater extent and has a very broad space in the field of 5G heat dissipation.
