A composite superlubricating coating with a nano-crimp structure and its preparation method
A super-lubricating and nano-scroll technology, applied in lubricating compositions, petroleum industry, etc., can solve the problems of poor structural stability and condition adaptability of nano-scrolls, short life in super-lubricated state, low friction coefficient, etc., and achieve significant friction reduction effect Effect
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Embodiment 1
[0028] (1) Weigh MoS according to the mass ratio of 1:5 2 Nanosheet powder (MoS 2 The number of layers of nanosheets is about 20 layers) and Al 2 o 3 Nanoparticle powder (Al 2 o 3 The diameter of the nanoparticles is about 80 nm); the above two powders are mixed evenly and then placed in a ball milling tank for ball milling, wherein the material of the ball milling balls is alumina, MoS 2 Nanosheets and Al 2 o 3 The ratio of the total volume of the nanoparticles to the volume of the milling balls was 1:10; the rotation speed during the milling process was 100 rpm, and the milling time was 10 h to obtain MoS 2 Nanosheet-coated Al 2 o 3 Composite of nanoparticle nanovolume structure, standby;
[0029] (2) MoS prepared in step (1) 2 Nanosheet-coated Al 2 o 3 Add 0.2 g of the volume structure composite of nanoparticle nanometer into 100 ml of absolute ethanol, add polyamide-imide resin binder in the dispersion liquid, and the quality of the polyamide-imide resin binder...
Embodiment 2
[0033] (1) Weigh graphene nanosheets (the number of layers of graphene nanosheets is about 10 layers) and SiO2 according to the mass ratio of 1:15 2 Nanoparticle powder (SiO 2 The diameter of the nanoparticles is about 30 nm); the above two powders are mixed evenly and then placed in a ball milling tank for ball milling, wherein the ball milling balls are made of tungsten carbide, graphene nanosheets and SiO 2 The ratio of the total volume of nanoparticles to the volume of ball milling balls is 1:0.1; during the ball milling process, the rotation speed is 400 rpm, and the ball milling time is 0.5 h to obtain graphene nanosheets wrapped SiO 2 Composite of nanoparticle nanovolume structure, standby;
[0034] (2) Wrap the graphene nanosheets prepared in step (1) with SiO 2The nanovolume structure compound 0.1g of nanoparticle joins in 200 ml dehydrated alcohol, adds epoxy resin binder in dispersion liquid, and the mass ratio of epoxy resin binder and nanovolume structure compou...
Embodiment 3
[0038] (1) Weigh WS according to the mass ratio of 1:0.5 2 Nanosheets (WS 2 The number of layers of nanosheets is about 30 layers) and Sb 2 o 3 Nanoparticle powder (Sb 2 o 3 The diameter of the nanoparticles is about 130 nm); the above two powders are mixed evenly and placed in a ball milling tank for ball milling treatment, wherein the material of the ball milling balls is silicon nitride, WS 2 Nanosheets and Sb 2 o 3 The ratio of the total volume of nanoparticles to the volume of ball milling balls was 1:1; during the milling process, the rotation speed was 600 rpm, and the milling time was 8 h, and the WS 2 Nanosheet-coated Sb 2 o 3 Composite of nanoparticle nanovolume structure, standby;
[0039] (2) The WS prepared in step (1) 2 Nanosheet-coated Sb 2 o 3 Add 0.15 g of the composite of the nanoparticle nanovolume structure to 100 ml of absolute ethanol, add a polyimide resin binder to the dispersion, and the mass ratio of the polyimide resin binder to the nanov...
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