Hexagonal boron nitride (BN) is also known as "white graphite" in the industry. The friction coefficient is as low as 0.16, and it does not increase as temperature increase. It is more resistant to high temperature than molybdenum disulfide and graphite. The oxidizing atmosphere can be used up to 900 °C, and the vacuum can be used up to 2000 °C. The lubricating performance is poor at normal temperature, but strong at high temperature, so it has been widely used in high temperature lubrication in recent years. For example, hexagonal boron nitride is well suited for lubrication in engine cylinders due to its long-term exposure to high temperatures and pressures. Boron nitride oil additive is a ceramic anti-wear and energy-saving lubricating additive developed from high-purity nano-boron nitride. The thin-plate structure prevents direct contact of metal surfaces and effectively reduces mechanical friction. This product can withstand extremely high pressure, increase heat dissipation, withstand higher temperatures, improve fuel economy and prolong engine life. In particular, its extreme pressure resistance is outstanding, so it is often seen in heavy-duty lubrication applications (such as gearbox lubrication).

Boron nitride oil additives are mainly used in the following lubricating oils:

1. Engine car oil or car oil essence

2. Gear oil

3. Penetrating lubricants

4. Rail oil

5. Conveyor chain lubricant

6. Cutting oil, grinding oil, crushing motor oil

Application ratio of boron nitride in automobile engine oil

1. Engine oil: 1-2%

2. Usually the main purpose of lubricating oil for industrial construction: 0.5-5%

A. It is required in the usual anti-wear application, just add 0.5%-1%.

B. If you want to achieve better wear resistance, environmental protection and energy saving needs, you can add 1%-2%.

C. If the added amount is more than 2.5%, it can achieve high anti-wear, environmental protection and energy-saving characteristics, and even enable the internal combustion engine to run without oil, that is, to drain the engine oil, only rely on the oil film on the internal parts of the engine to resist. The compressive strength still maintains the engine and keeps it running for longer periods of time.