Effect of adding Nano Diamond Powder to Lubricating Oil
The strange effect of nano diamond powder in lubricating oil is beyond many people’s expectation. It is not only used to make engine oil, but also can be used to make worm gear oil, gear oil, hydraulic oil, vacuum pump oil, high-speed machinery oil, machine tool oil and so on. Recent studies have shown that the addition of nano diamond powder to lubricating oil shows the following advantages:
(1) Improve the quality and competitiveness of products; increase the working life of transportation tools and devices; save lubricant materials.
(2) Friction momentum is reduced by 20% to 40%.
(3) Friction surface wear is reduced by 30% to 40%.
(4) Rapid break-in of the friction pair.
Organic combination of engine break-in and surface modification
The unit consumption of nano diamond powder is 0.01～0.20 kg in 1000 kg of lubricating oil, and in 2002, China consumed about 4.0×106 tons of lubricating oil, with a sales volume of tens of billions of dollars, and the rate of increase is 10% per year. Using the characteristics of nano diamond powder, the research and development of high-efficiency special-purpose internal combustion engine break-in oil, after the laboratory physical and chemical index test and engine bench test, proved to be able to significantly shorten the time, improve the quality of break-in, improve the surface wear resistance of the engine mating sub-surface, and prolong the service life of the engine Realization of the engine break-in and the surface modification of the organic combination.
Functions of metal lubricants with nano diamond powder
At present, metal lubricants are commonly used to pre-grind the surface of the friction sub-surface, so as to confer the anti-wear property of metal lubricants to the surface of the friction sub-surface. Experimental data proves that metal lubricants containing nano diamond powder can reduce the wear degree by 1.7 to 2.0 times, shorten the break-in time by 1.5 to 2.4 times, and reduce the friction coefficient by 1.25 to 2.0 times.
Black & Gray Powder Modified Plastic
Nano diamond powder black powder and nano diamond powder gray powder modified plastic effects are as follows:
(1) The thermal oxidation properties of the unmodified black powder composites in air were improved. The thermal decomposition temperatures of HDPE and LLDPE composites filled with 05% black powder were increased by 9°C and 5°C, respectively, compared with those of the pure matrix.
(2) The tensile strength of the composite material obtained by filling the polymer with unmodified black powder did not change much, and a decrease occurred at a higher filling amount. The tensile strength of the composites obtained by filling modified black powder was improved. The impact strength of the filled composites decreased regardless of the unmodified or modified black powder. The friction wear performance of the composites increased with the increase of the amount of black powder. Taken together, the best filling amount of black powder for HDPE is 0.5%, and the better filling amount for LLDPE is 0.3% to 0.5%.
(3) filled with 0.5% black powder HDPE composite material, in the test load is lower than 2kg, friction wear performance by the load of the influence of the change is not big, more than 2.5kg, friction wear performance significantly worse; filled with 0.5% black powder LDLPE composite material, in the test load is lower than 10kg, friction wear performance by the load of the influence of the not big, more than 10kg, friction wear performance significantly worse. The friction and abrasion performance of LDLPE composite material filled with 0.5% black powder becomes worse.
(4) Unmodified nano-diamond black powder or nano-diamond gray powder has better dispersion and compatibility in PP. The addition of nano-diamond black powder or nano-diamond gray powder increases the crystallinity of the a-state crystal of PP, but does not lead to the formation of other crystal types. The crystallinity of PP with 0.06% nano-diamond black powder or 0.06% nano-diamond gray powder increased by T16.74% and 25.83%, respectively, compared with that of the substrate, and the tensile strength of PP-based composites increased with the increase of the filler content, while the impact strength decreased. The impact strength of PP-based composites fluctuates with the increase of nano-particle content due to the dual effects of free radicals on the crystalline region of PP matrix and on the orientation of amorphous region, and the maximum value occurs around 0.06% of the filler content. The improvement effect of nano diamond powder gray powder on PP properties is better than that of nano diamond powder black powder.
(5) After the addition of nano diamond dust to epoxy resin adhesive, the strength of anti-breakage is increased by 2-2.5 times.
