Emerging development areas of nano-diamond powder

wallpapers Industry 2021-04-08
The manufacture of nano-diamonds, especially their applications, has been a hot research topic for scientists from all over the world in recent years.
Nano-diamond has been developed as early as more than 30 years ago, but its application was limited to the field of polycrystalline, polishing agents, and other abrasives. With the deepening of people’s understanding of the properties of nano-diamond, nano-diamond has been used in lubricants. , Metal coating, magnetic recording system, medicine, and other fields have begun to be applied, and the application field is still expanding.
Nano-diamond is added to lubricating oil and cooling liquid
The application of nano-diamond in lubricating oil, grease, and coolant is mainly used in the machinery industry, metal processing, engine manufacturing, shipbuilding, aviation, transportation. Adding nano-diamond to lubricating oil can increase the working life of engines and transmissions and save fuel Engine oil, the friction torque is reduced by 20-40%, and the friction surface wear is reduced by 30-40%. 1000 kg of engine oil consumes 0.1-0.2 kg of nano-diamond. The application of nano-diamond in lubricating oil must solve the problem of stable suspension. This problem.
Nano-diamond-polymer composite
Nano-diamond polymer composites are used in aviation, automobiles, tractors, shipbuilding, medicine, chemical, petrochemical, globe valves, protective layers, and wear-resistant coatings. Fluoroplastic rubber and polysiloxane-based high-efficiency coatings have been developed Layer. The elastic strength properties of polyisoprene rubber, styrene-butadiene rubber, nitrile rubber, and natural rubber have been greatly improved. Adding nano-diamond to rubber can reduce wear by an average of 2 to 4 times, increase fracture resistance by 30%, and improve Destruction temperature by 15%.
Epoxy resin glue containing nano-diamonds has higher adhesion and cohesion. Adding nano-diamonds to the polymer can improve its strength, wear resistance, and thermal aging resistance. 1000 kg of rubber (polymer) consumes nanometers Diamond 1~5kg, 1000m2 polymer coating consumes 1~5kg diamond.
Sintered body
In the field of abrasives, nano-diamonds are mainly used to mix with transition metals to produce high-strength and low-porosity diamond sintered bodies. Its micro-hardness can reach 6000~7000kg/mm2. It can be used to process soft or brittle materials with very high surface roughness. Low. If carbon is pre-epitaxially grown or diamond micro powder synthesized by static pressure is added, the microhardness of the diamond polycrystal obtained by sintering under the pressure of 10~12GPa can reach the level of a natural diamond single crystal. It can be made into a drill bit to drill high-strength rock formations. Exceeding the performance of CB-СП (Russia) polycrystalline. When compressing the diamond powder synthesized by static pressure, using nano-diamond as the component of the silicon impregnating material can almost double the yield of the sintered body, and the compressive strength is 1.7GPa Increased to 2.2GPa. This sintered body is used as a cutting element for drills.
Magnetic recording system
Nano-diamonds can also be used in magnetic recording media such as magnetic tapes and magnetic disks, acting as wear-resistant additives and physical modifiers. Nano-diamonds are added when electrochemically coating composite magnetic recording films to improve the performance of magnetic recording devices. Adding nano-diamonds Diamond can reduce ferromagnetic material particles, increase recording density, and reduce abrasive wear and friction coefficient.
Add to intermetallic compound
Copper, tin, and zinc intermetallic compounds containing nanodiamonds can be used as friction parts with very harsh working conditions. At this time, plastic and liquid lubricating materials are often extruded. Nanodiamonds are ideal component materials for copper-zinc or copper-tin alloys ( The content does not exceed 15% by volume). After adding nano-diamond, the friction is reduced to 1/2~1/6.
Nanodiamonds can also be used in medicine to treat tumors, gastrointestinal diseases, and skin diseases. It is non-toxic, non-carcinogenic, or rusty. Nanodiamonds are super active adsorbents and bioactive substances locating agents, which can greatly enhance drug Efficacy.
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