CAS 7440-05-3 Pd nanopowder Ultrafine Palladium as catalyst
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
13929258449
13929258449
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
We can supply different size products of niobium silicide powder according to client's requirements. Size:1-3um; Purity:99.5%;Shape:granular CAS No:12034-80-9;ENINEC No.:234-812-3
Ni2Si particle,99.5% purity,granular shape,is used for Microelectronic integrated circuit, nickel silicide film,etc. Size:1-10um; CAS No:12059-14-2;ENINEC No.:235-033-1
For the first time in the world, the Chinese technical team has reported an ultra-long carbon nanotube tube bundle close to the theoretical strength of a single carbon nanotube, which has a tensile strength that exceeds all other fiber materials found so far. The related results were titled "Carbon nanotube bundles with tensile strength exceeding 80 GPa" and were published online on May 14 in the world's top academic journal "Nature·Nanotechnology". The technicians said that the research team used the airflow focusing method to prepare a centimeter-scale continuous ultra-long carbon nanotube bundle with a certain composition, perfect structure and parallel arrangement, and increased the tensile strength of the tube bundle to above 80 GPa, close to a single carbon nanometer. The tensile strength of the tube and the strength can be maintained as the number of carbon nanotubes increases. "We arrange the super long carbon nanotubes one by one, use special methods to form the corresponding structure and shape, and prove that the macro fiber synthesized by this can maintain the strength of the carbon nanotubes unchanged." The new method of strong carbon nanotube bundles, combined with the macro-preparation method of ultra-long carbon nanotubes, can produce ultra-long and super-strong carbon nanotube fibers, which are one order of magnitude stronger than ordinary carbon fiber materials. Technicians point out that this work reveals the bright future of ultra-long carbon nanotubes for the manufacture of super-strong fibers, while pointing out the direction and method for the development of new super-strong fibers. At present, although the research is still in a partial state, the research team has crossed the theory and created macroscopic fibers, which helps to improve the super-strong materials with a certain production scale, and also lays a foundation for the preparation of a large amount of super-strong materials in the future. Good foundation. Super-strong fibers are expected to show their talents in large aircraft, large-scale launch vehicles, and super-buildings. Reviewer of Nature·Nanotechnology commented: “The author of the paper has made a landmark breakthrough and reported for the first time in the world a bundle of carbon nanotube tubes close to the strength of a single carbon nanotube. This work is extremely Far-reaching influence, it will undoubtedly cause widespread concern around the world." According to research and development personnel, carbon nanotubes are considered to be one of the strongest materials that have been discovered so far, but when a single carbon nanotube with excellent mechanical properties is prepared into a macroscopic material, its performance is often greatly reduced, much lower than Theoretical value. The reason is that the length of the carbon nanotubes is short, and after forming the macroscopic fibers, they are easily broken from the defects under the tensile force and easily slip to each other, resulting in a ...
Read MoreOn October 22, 2018, Xjet officially opened its additive manufacturing center in Rehovot. Covering an area of 8,000 square feet and investing more than $10 million, Rehovot Technology Park is one of the world's largest metal and ceramic 3D printer centers, consisting entirely of the XJet Carmel AM system. The XJet Carmel Series AM system utilizes XJet's patented NanoParticle Jetting (NPJ) technology to create objects by using nanoparticle inks of either material for 3D printing of ceramics and metals. More specifically, XJet's NanoParticle Jetting technology fills liquid suspensions with solid nanoparticles. When the materials are loaded into a 3D printer, they are jetted using a complex nozzle system that deposits ultra-fine ink droplets and support material ink. Go to the build tray. Inside the construction envelope, an extremely high temperature effectively evaporates the liquid suspension of the ink to form a dense layer of ceramic or metal. Finally, once the printing process is complete, the printing components can be sintered and the support material can be removed. Thanks to its unique approach, NPJ technology can produce highly complex parts with ultra-fine details, smooth surfaces and precise accuracy. According to the company, the AM Center aims to support XJet in developing new 3D printed materials and applications. Ceramic samples printed on XJET metal 3D printers, made of silicon oxide and aluminum oxide. This makes the Antarctic bear feel a little surprised: from this it can be seen that its materials can range from metal to ceramic, spanning two major fields. Metal parts printed by XJET metal 3D printer:
Read MoreChinaPeking Universitycooperate with Chinese Academy of Sciencesto use ethanol / methanebychemical vapor deposition method to get ultrahigh-density semiconductor array level of single-walled carbon nanotube. Nowadays, as electronic devices become smaller and smaller, silicon transistors have reached the bottleneck of their development. The horizontal array ofsingle-walled carbon nanotubesis regarded as the most powerful successor of future transistors due to its excellent performance. At present, obtaining high-purity, high-density horizontal arrays of single-walled carbon nanotubes is a major challenge for researchers. Although the direct formation of horizontal arrays ofsingle-walled carbon nanotubeson a substrate by chemical vapor deposition is an effective method for realizing high-performance electronic devices, conventional chemical vapor deposition is extremely active due to the generated methane plasma and ultra-high temperature hydrogen atoms. It is difficult to control, and usually results in a low yield of semiconductor-typecarbon nanotubes. Recently, researchers from Peking University and the Chinese Academy of Sciences reported a ethanol / methane chemical vapor deposition of the scientific method to preparesingle-walled carbon nanotube array level. SWNT horizontal array prepared by the method of a semiconductor single-walled carbon nanotube purity of 91% and a density higher than 100 tubes / μm. This method is at a certain temperature, thermal decomposition of ethanol is completely for Trojan-Mo catalyst to provide a carbon atom to generate a high-densitysingle wall carbon nanotubes; and incomplete thermal decomposition of methane is used to provide the free H base metal to prevent the formation of single-walled carbon nanotubes. Ethanol and methane moderate activity, vital high controllability, and the synergistic effect of both high purity and high-density semiconductor single-walled carbon nanotube growth. The study was a large area of high-densitysingle-walled carbon nanotubesynthesis horizontal array of a step forward, showing the potential applications of carbon nanotube electronics.
Read MoreThe development of carbon nanotube water-based thermal printing ink has been successfully developed. This is another new product launched by SAT NANO Co., Ltd. after the carbon nanotube water-based thermal spray coating for consumer electronics cooling. Carbon nanotubes (CNTs) are the most ideal functional fillers for heat dissipation applications. Known as the darkest substance in the world, CNTs is close to 1, and is one of the best thermal materials in the world. Compared with granular heat-dissipating fillers, fibrous CNTs are more likely to form a heat-conducting network in the coating, which has a significant strengthening and toughening effect on the coating, achieving thin coating, reducing thermal resistance, and exerting the best performance. CNTs water-based heat-dissipating coating is formed on the surface of electronic components by spraying. It has uniform heat, low thermal resistance and high thermal radiation coefficient, which enhances heat dissipation of metal substrate. However, due to its small size and light weight, the electronic components in the mobile phone have low production efficiency and high cost. The development of automation equipment, especially the emergence of high-precision automatic screen printing equipment, not only can achieve automatic printing, but also can customize the graphics, accurately control the thickness of the printing coating, precision <1um, which provides a large-scale application of CNTs for mobile phone cooling. feasibility. SAT NANO successfully applied the water-based ink technology to the surface of the metal strip through the silk screen process to coat the surface of the metal strip with CNTs heat-dissipating coating, so that the metal materials such as white copper/stainless steel/tin iron have excellent heat dissipation performance, and the measured emissivity of the coating is greater than 0.98. Focus on level 0, pencil hardness 3-4H, no change in performance after 100 ° C / 200 hours of aging. With the advent of carbon nanotube water-based heat-dissipating inks, heat-dissipating engineers have been able to solve the pain points that cannot be solved by heat-conducting and heat-reducing materials, and have designed subversive products. At present, first-line mobile phone brands have been applied in large quantities in shields and LED backlights, and many brands are designing and verification. The mobile phone/tablet has multiple RF devices and antennas. The electromagnetic waves cause crosstalk to high-speed semiconductor devices such as CPU/DRAM/FLASH. The shield is made of metal (copper white/stainless steel/tinplate) printed with carbon nanotube heat-dissipating ink. The coating emits heat from the heat generated by the electronics under the shield to ensure stable operation of critical components for a long time. The shielding cover printed with the carbon nanotube heat-dissipating ink does not need to open the vent hole to dissipate heat, and the shielding performance is max...
Read MoreAs one of the materials of pencils, ink is not unfamiliar to people. However, in the next decade, the demand for graphite will be as high as several million tons per year. Graphite is the core material of lithium-ion batteries for electric vehicles. The amount of graphite in the anode of the vehicle battery seems to be negligible. However, as American automakers promote electric vehicles, they rely more on the stable supply of graphite, while the Trump administration has imposed 10 on all graphite products imported from China in a new round of Sino-US trade tariffs. % tariff. To this end, China has begun to shut down several important graphite mines, which is not unrelated to the pollution of the industry, unsafe operations, and easy collapse of pits. In fact, with the closure of the mine and regulatory restrictions, China will become the net importer of graphite for the first time. To this end, in the first half of 2018, the price of flake graphite continued to rise. It is worth noting that due to the slight decline in demand for electric vehicle batteries, this is mainly due to the high price of lithium and cobalt, which are the core raw materials for electric vehicle battery. According to a report by Benchmark Minerals Intelligence (BMI), demand for batteries and graphite is expected to increase further in the second half of this year. In addition, BMI expects that by 2028, with the development of the new battery super factory, the capacity increase will reach 860 GWh, which means that during this period, the increase of high-quality flake graphite products will reach 950,000 tons. At present, the annual output of natural graphite is about 1.2 million tons, of which 15-20% of graphite will be used to make electric vehicle batteries. In order to meet the demand for battery anode graphite, an additional 2.5-300 million tons of graphite is required each year. Although the path of growth in demand for electric vehicles seems reasonable, it is currently unable to obtain the required graphite output to drive demand for electric vehicles. So the question is, what happens when the demand for graphite greatly exceeds the current supply? It is now beginning to feel the beginning of the material, and the answer seems clear. SAT nano Technology Material Co., Ltd. supply series of graphite powder with different particle.
Read MoreCarbon nanotubes were first produced in the early 1990s. It‘s as the name suggests -- nanoscale carbon tubes. Although they are thousands of times thinner than human hair, their use is very powerful, and carbon nanotubes have good heat transfer properties. Therefore, researchers have been working on carbon nanotubes, and are investigating the incorporation of carbon nanotubes into 3D printing applications, or 3D printing of carbon nanotubes themselves. Korean researchers are working on 3D printed carbon nanotubes for the development of flexible electronics and wearable technology. The Korea Electrician Research Institute (KERI) has developed a new technology for printing high conductivity, multi-walled carbon nanotubes (MWNTs) using liquid ink 3D. The study was documented in the literature entitled "3D Printing of Highly Conductive Carbon Nanotube Microstructures Using Fluid Inks". Researchers say that pushing printed electronics to three dimensions requires advanced additive manufacturing techniques that produce versatile materials and high spatial resolution. In order to achieve smooth 3D printing without any nozzle clogging, the researchers designed a MWNT ink with a uniformly dispersed polyvinylpyrrolidone winding. According to a team led by Seol Seung-kwon, 3D printing technology can further enhance parts by thermal post-processing to achieve high concentrations of MWNTs - up to 75% of various microstructures. There are many practical applications for 3D printing carbon nanotubes. In the study, the researchers showed several electronic components, including sensors, transmitters, and RF inductors. This technology can also be of great value in the manufacture of wearable electronic products, including flexible electronic packages. “The existing 3D printing technology is very limited in use,” Seol explains. “This latest approach will enhance the versatility of the various components required for 3D printing in making future wearable products, making it wearable. Electronic products open up new possibilities." The researchers added: "We expect that the techniques presented in this study will help select different materials in the 3D printing process and increase the freedom of integration of advanced concept devices. It is reported that the researchers include: Jung Hyun Kim, Sanghyeon Lee, Muhammad Wajahat, Hwakyung Jeong, Won Suk Chang, Hee Jin Jeong, Jong-Ryul Jang, Ji Tae Kim, Seung Kwon Seol.
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