Benefits of adding nanodiamond 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:

Improved product quality and competitiveness; Extended lifespan of transportation tools and equipment; Savings on lubricating oil materials.
Reduction in frictional momentum: 20%-40%.
Reduction in wear on friction surfaces: 30%–40%.
Faster break-in of friction pairs.

Organic combination of engine break-in and surface modification

The consumption of nanodiamond powder is as follows: for every 1,000 kg of lubricating oil, 0.01 to 0.20 kg of nanodiamond powder is added. In 2002, China consumed approximately 4 million tons of lubricating oil, with sales amounting to several hundred billion yuan, and the consumption has been increasing at a rate of 10% per year. Leveraging the unique properties of nanodiamond powder, a high-efficiency specialized break-in oil for internal combustion engines was developed. Laboratory tests on physical and chemical indicators, along with full-scale engine bench tests, have proven that this oil significantly reduces break-in time, improves the quality of the break-in process, enhances wear resistance on the surface of engine components, and extends engine life. This demonstrates an effective combination of engine break-in and surface modification.

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:

Composite materials filled with unmodified black nanodiamond powder have shown improved thermo-oxidative stability in air. After adding 0.5% black powder, the thermal decomposition temperature of HDPE and LLDPE composites increased by 9°C and 5°C, respectively, compared to the pure matrix.
When unmodified black nanodiamond powder is added to polymers, the tensile strength of the resulting composite materials does not change significantly, but it decreases at higher filling levels. After modifying the black powder, the tensile strength improves. Regardless of whether the black powder is modified or not, the impact strength of the composites decreases after the addition. However, the wear resistance of the composites increases as the black powder content rises. Overall, it is considered that the optimal black powder filling for HDPE is 0.5%, and for LLDPE, the ideal range is between 0.3% and 0.5%.
HDPE composite materials filled with 0.5% black nanodiamond powder show stable wear resistance under a test load below 2 kg, with little variation due to load changes. However, when the load exceeds 2.5 kg, the wear resistance significantly deteriorates. Similarly, LDLPE composites filled with 0.5% black powder maintain stable wear resistance under loads below 10 kg, but once the load surpasses 10 kg, the wear resistance markedly declines.
Unmodified nanodiamond black powder or gray powder disperses well in PP (polypropylene) and exhibits good compatibility. Adding nanodiamond black powder or gray powder enhances the crystallinity of PP’s α-phase without generating other crystal forms. When 0.06% nanodiamond black powder or gray powder is added to PP, the crystallinity increases by 16.74% and 25.83%, respectively, compared to the base material. The tensile strength of PP-based composites improves as the filler content increases, while the impact strength decreases. This fluctuation in impact strength is due to the dual action of free radicals, which induce crystallization in the crystalline regions and orientation in the amorphous regions of the PP matrix. The maximum impact strength occurs around a filler content of 0.06%. Overall, nanodiamond gray powder offers better performance enhancement for PP than black powder.
After adding nano diamond ash powder to the epoxy resin adhesive, the fracture strength is increased by 2 to 2.5 times.