As a carrier, single-wall or multi-wall carbon nanotubes, KELAIWEI has been engaged in industry-related research for more than 20 years in the development of nano-carbon materials in our country. KELAIWEI's research and development team of nanometre carbon materials is led by Professor Sun Xiaogang of Nanchang University. KELAIWEI is committed to helping to realize the leading force of nanometre carbon materials industry in China, insisting on independent development and helping to realize the complete localization of carbon nanotube materials, it has contributed to the manufacturing technology of carbon nanotube materials in China by KELAIWEI.
What are the manufacturing methods of carbon nanotubes? Since the discovery of carbon nanotubes, the research on carbon nanotubes has never stopped. Carbon nanotubes have complex and excellent properties, which are both conductive and conductive, very thin but very hard, compared with a hundred times of steel hardness, carbon nanotubes are widely used, so various preparation methods have also been invented. Common production methods include arc method, catalytic thermal decomposition method, hydrothermal method, chemical vapor deposition method and so on, to be the carrier single-wall or multi-wall carbon nanotubes.
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.
Green environmental protection ensures non-toxic and harmless whisker carbon nanotubes modern industrial production line has been built in the factory area of KELAIWEI company. The process equipment and technology of this whisker carbon nanotubes production line are completely researched and developed independently by the technical staff of KELAIWEI company, and our company has all relevant technical invention patents. The completion of this project will "greatly encourage" the domestic and foreign counterparts of KELAIWEI company, and jointly promote the development of the production and research of carbon nanotube materials.
Whisker carbon nanotubes belong to coarse diameter and long length. Ordinary carbon nanotubes are short in length and fine in diameter after grinding. Ordinary carbon black belongs to granular conductive agent. Using the principle of composite conductive agent, ordinary carbon nanotubes and carbon black are compounded to produce composite conductive agent paste. The composite conductive agent paste gives full play to the advantages of various conductive agents and can still maintain a good conductive network in high magnification and circulation, it is mainly applied to silicon carbon negative pole and high-rate battery.
The far infrared emission band of the paper produced by our company ranges from 2 nanometers to 20 nanometers, and the electrothermal conversion rate is as high as over 99.5%, which has obvious application effect in the field of thermal products. After our company provided samples for a honeycomb heat exchanger manufacturer in Beijing, the performance of the honeycomb heat exchanger was significantly improved, and the energy-saving effect was obvious after the trial of customers, especially the test of the product quality control department, which could save more than 25% of energy compared with the previous one.
After more than 20 years of research, the technology center of KELAIWEI company has been able to manufacture ultra-high purity whisker carbon nanotubes with a purity of 99.95%. Henan KELAIWEI carbon nanotube material Co., Ltd. and many high-end battery manufacturers at home and abroad have found in practical application research that whisker carbon nanotube is a very ideal conductive additive for positive and negative electrode materials of lithium batteries, it can effectively improve the battery life and capacity.
