Low friction coefficient fullerene modified diesel engine lubricating oil and preparation method thereof
A diesel engine, low friction coefficient technology, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problems of complicated preparation process and weak lubricating effect, and achieve the effect of simple preparation process, strong lubricating effect and reduced wear
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[0038] A preparation method of the above-mentioned fullerene modified diesel engine lubricating oil with low coefficient of friction, the preparation method comprises the following steps in sequence:
[0039] The first step: first add fullerenes to the base oil, and then ball mill and disperse them until the fullerenes are uniformly dispersed in the base oil to obtain a high-concentration intermediate oil. The content of fullerenes in the high-concentration intermediate oil is 1-10mg / ml;
[0040] The second step: dilute and disperse the above-mentioned high-concentration intermediate oil to obtain diluent oil. The method of diluting and dispersing adopts ultrasonic treatment. When the color of the diluent oil is uniform, stop the ultrasonic treatment to obtain the fullerene-modified diesel oil Engine lubricating oil, the content of fullerene in the fullerene modified diesel engine lubricating oil is 0.01-1 mg / ml.
[0041] In the first step, the ball mill dispersion refers to:...
Embodiment 1
[0059] A preparation method of a low coefficient of friction fullerene modified diesel engine lubricating oil, comprising the following steps in sequence:
[0060] The first step: the fullerene ( figure 1 ) is added to the base oil, the fullerene is C60, C70 or a mixture of C60 and C70 in any ratio, the base oil is CD, CE, CF-4 or CH-4 diesel engine lubricating oil, the color of the base oil is Brown, and then ball-milling and dispersing it until the fullerenes are uniformly dispersed in the base oil to obtain a high-concentration intermediate oil. The content of fullerene in the medium is 1mg / ml; The ball mill dispersion refers to the use of balls of different diameters for mixed ball milling; the type of the balls is zirconia balls, alumina balls or agate balls, and the diameter of the balls is 100um-5mm; the speed of ball milling dispersion is 50-5000r / min; the time of ball milling is 10min-10h;
[0061] Step 2: Ultrasonic treatment is carried out to the above-mentioned h...
Embodiment 2
[0063] Basic content is the same as embodiment 1, the difference is:
[0064] The content of fullerene in the high-concentration intermediate oil is 10mg / ml; the time of ultrasonic treatment is 10h, and the content of fullerene in the final product fullerene-modified diesel engine lubricating oil is 1 mg / ml;
[0065] Using a four-ball machine to test the friction and wear of lubricating oil, the test results show that the friction coefficient is reduced by 25%, and the wear is reduced by 20%.
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