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The emerging field of nano-diamond development

2018-10-12
1. nano diamond is added to the lubricating oil, coolant
The application of nano-diamond in lubricating oil, grease and coolant is mainly used in machinery, metal processing, engine manufacturing, shipbuilding, aviation, transportation. Adding nano-diamond to lubricating oil can improve the working life of engine and transmission and save fuel Engine oil, friction torque is reduced by 20~40%, friction surface wear is reduced by 30~40%. 1000kg engine oil consumes 0.1~0.2kg of nano-diamond. Nano-diamond application must solve its stable suspension problem in lubricating oil. Solved this problem.

2. nanodiamond-polymer composite
Nano-diamond polymer composites are used in aerospace, automotive, tractor, marine, medical, chemical, petrochemical, globe valves, protective coatings and wear resistant coatings. Fluoroelastomers and silicone-based high-efficiency coatings have been developed. The elastic strength properties of polyisoprene rubber, styrene-butadiene rubber, nitrile rubber and natural rubber are greatly improved. Adding nano-diamond to rubber can reduce wear by 2-4 times on average, improve fracture resistance by 30%, and improve Destruction temperature 15%.
The epoxy resin containing nano-diamond has higher adhesion and cohesion. Adding nano-diamond to the polymer can improve its strength, wear resistance and heat aging resistance. 1000 kg of rubber (polymer) consumes nanometer 1 to 5 kg of diamond, 1000 m2 polymer coating consumes 1 to 5 kg of diamond.

3. sintered body
In the field of abrasives, nano-diamond is mainly used to mix high-strength and low-porosity diamond sintered bodies with transition metals. Its microhardness can reach 6000-7000kg/mm2. It can be used to process soft or brittle materials. If the carbon is pre-epitaxially grown or the diamond micropowder synthesized by static pressure is added, the microhardness of the diamond polycrystal obtained by sintering at a pressure of 10-12 GPa can reach the level of the natural diamond single crystal. Exceeding the performance of CB-СП (Russia) polycrystal. When compacting the diamond micropowder synthesized by static pressure, using nano-diamond as the component of silicon impregnating material can almost double the yield of sintered body, and the compressive strength is 1.7GPa. Increased to 2.2GPa. This sintered body is used as a cutting element for drill bits.

4. magnetic recording system
Nano-diamond can also be used in magnetic recording carriers such as magnetic tapes and magnetic disks, and functions as wear-resistant additives and physical modifiers. Nano-diamonds are added during electrochemical coating of composite magnetic recording films to improve the performance of magnetic recording devices. Diamond can reduce ferromagnetic material particles, increase recording density, reduce abrasive wear and friction coefficient.
5, added to the intermetallic compound
Copper, tin, and zinc intermetallic compounds containing nanodiamonds can be used as friction components with very harsh working conditions. Plastic and liquid lubricants are often extruded. Nanodiamonds are ideal 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.

6. medicine
Nano-diamond can also be used in medicine for the treatment of tumors, gastrointestinal diseases and skin diseases. It is non-toxic, non-carcinogenic or rust-resistant. Nano-diamond is a super-active adsorbent and bioactive locator, which can greatly enhance the drug. Efficacy