Extremely-low-volatility PAO (polyalpha-olefin) lubricating grease and preparation method thereof

[0016] Example 1

[0017] A very low-volatile PAO grease is prepared from the following raw materials by weight percentage: 60% of PAO after rectification, 39% of PTFE, and 1% of dialkyldiphenylamine.

[0018] It should be noted that in this example, the kinematic viscosity of PAO at 100° C. is 10 mm2 / s, which is composed of a single PAO; the PTFE powder is a single type, with a particle size of about 7 microns.

[0019] The performance of the product is shown in Table 1 below:

[0020] Table 1 is the product performance test table of Example 1

[0021]

[0022] Example 2

[0023] An extremely low volatility PAO grease is prepared by using the following raw materials by weight percentage: 65% of PAO after rectification, 34.5% of PTFE, and 0.5% of dialkyldiphenylamine.

[0024] It should be noted that in this example, the kinematic viscosity of PAO at 100° C. is 25 mm2 / s, which is composed of two kinds of PAOs; the PTFE powder is a single type, and the particle size is about 4 microns.

[0025] The performance of the product is shown in Table 2 below:

[0026] Table 2 is the product performance test table of embodiment 2

[0027]

[0028] Example 3

[0029] A very low volatility PAO grease, prepared from the following raw materials by weight: 78% PAO after rectification, 21.5% PTFE, 0.5% dialkyldiphenylamine

[0030] It should be noted that in this example, the kinematic viscosity of PAO at 100°C is 36 mm2 / s, which is composed of two kinds of PAOs; the PTFE powder is composed of three different kinds of PTFE, and the particle size is about 4-6 microns.

[0031] The performance of the product is shown in Table 3 below:

[0032] Table 3 is the product performance test table of embodiment 3

[0033]