A kind of porous oil-containing composite lubricating material and preparation method thereof
A technology of lubricating materials and oleylamine lubricants, which is applied in the field of porous oil-containing composite lubricating materials and its preparation, can solve the problems of reducing the mechanical properties of the polymer matrix, poor external stress capability, and poor timeliness, and achieves the elimination of organic modification, Effect of improving wear resistance and enhancing mechanical properties
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Embodiment 1
[0031] (1) Prepare Cu-BTC porous particles by hydrothermal synthesis, weigh 0.3g of copper nitrate hydrate and add it to a beaker containing 20mL of methanol, then add 0.85mL of acetic acid and 0.7mL of ethylenediamine to the beaker. Stir with magnetic stirring for 0.5 hours. Then 0.3 g of 1,3,5-benzenetricarboxylic acid was added and stirring was continued for 1 hour to form a homogeneous mixture. The above mixture was transferred to a Teflon-lined stainless steel reactor and reacted at 80 °C for 12 h. After natural cooling, the mixture was centrifuged and washed 3 times with ethanol. Subsequently, the resulting product was stirred in a solvent at 65° C. for 6 hours to obtain the final product.
[0032] (2) Cu-BTC porous particles were added to 50mL oleylamine, stirred continuously for 1 hour to form a uniform mixture, and placed in a vacuum atmosphere at a temperature of 60°C for 12 hours, impregnated and adsorbed with oleylamine lubricant, The Cu-BTC particles impregnate...
Embodiment 2
[0036] (1) According to Monodisperse silicon spheres with a particle size of 200nm were prepared by the method, and prepared into a 20wt.% silicon sphere dispersion. Add 10mL of n-hexadecane, stir and emulsify at high speed, and then volatilize the emulsion at 60°C for 12 hours. The precipitate was collected, washed with n-hexane to remove the residual n-hexadecane solvent on the surface, and dried to obtain a white powder. Finally, the white powder was dried at 600° C. under air atmosphere for 5 hours.
[0037] (2) Use glucose as the carbon source, configure it into a dilute solution of glucose sulfate, mix it with the powder prepared in step (1) evenly, and keep stirring for 12 hours, and finally filter the obtained powder in a tube furnace under the protection of inert gas at 900°C Sinter for 3 hours.
[0038] (3) The gray powder prepared in the above step (2) is immersed in a hydrofluoric acid solution with a concentration of 25 wt.%, and the template silicon balls are r...
Embodiment 3
[0042] (1) Polymer microspheres and graphene powder are added to the solvent by mass 2:1 and ultrasonically mixed for 5 hours to form colloidal particles, adjust pH=9, polymer microspheres are evenly adsorbed on the surface of graphene oxide, filtered and dried , transferred to a tube furnace, and calcined at 500°C in a nitrogen atmosphere to remove the template polymer microspheres and obtain porous graphene particles.
[0043] (2) The porous graphene prepared in the above step (2) is uniformly mixed with copper powder, cold-pressed at 0.5KN, and then sintered at 850°C in an SPS furnace to obtain a copper-based porous composite material. The sample is placed in a vacuum atmosphere and at a certain temperature. In the oleic acid lubricant for 12 hours, a copper-based porous oil-containing composite lubricating material was finally obtained.
[0044] (3) The lubricating performance of the composite lubricating material with porous oil-containing particles was evaluated using a ...
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