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Porous oil-containing composite lubricating material and preparation method thereof

A lubricating material and lubricant technology, 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 timeliness, and poor external stress capability, so as to save organic modification and enhance mechanical properties. Performance, the effect of improving wear resistance

Active Publication Date: 2017-12-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wall material of the microcapsule is soft, and its ability to bear external stress is poor compared with the matrix. After compounding with the polymer matrix, the mechanical properties of the polymer matrix will be reduced, and the duration of the self-lubrication of the microcapsule oil storage is related to the content of the microcapsule. The number of microcapsules is related, and the timeliness is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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 an air atmosphere for 5 hours.

[0037] (2) Use glucose as a carbon source, configure it into a dilute solution of glucose sulfate, mix it with the powder prepared in step (1), and keep stirring for 12 hours, and finally filter the obtained powder in a tube furnace, protected by 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 removed to obta...

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 evenly 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 mic...

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PUM

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Abstract

The invention relates to a porous oil-containing composite lubricating material and a preparation method thereof. The composite lubricating material based on porous oil-containing particle filling phases is prepared from components as follows: porous particles, a lubricating agent and a porous matrix. Compared with an existing porous oil-containing material technology, three oil-containing particle filling phases with the porous structure are prepared and dispersed in a porous polymer or a metallic matrix with a certain method, and one novel porous oil-containing lubricating material is formed. The lubricating agent is effectively prevented from overflowing from the porous matrix automatically by the aid of the porous oil-containing particles, so that timeliness of the self-lubricating material is improved; meanwhile, mechanical performance of the porous matrix can be compensated to a certain degree by the porous oil-containing particles, and therefore, the material has quite broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of solid-phase self-lubricating composite materials, and in particular relates to a porous oil-containing composite lubricating material and a preparation method thereof. Background technique [0002] With the development of solid lubricating materials, self-lubricating bearing materials have greatly broken through the use limit of traditional materials in terms of performance, and have gradually become one of the research hotspots in the field of tribology. The main idea is to combine the good mechanical strength of the matrix material with the excellent lubricating properties of the solid lubricating filler material. However, such self-lubricating materials often have problems such as difficult dispersion, complicated manufacturing process, and high cost. In addition, as the operating time increases during use, lubrication failure and wear will gradually occur, eventually causing irreversible damage to the...

Claims

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Application Information

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IPC IPC(8): C08G83/00C08L63/00C08L87/00C08K5/09C08K5/17B22F3/11B22F3/26C22C1/08C22C9/00
CPCB22F3/11B22F3/26C08G83/008C08L63/00C22C9/00C22C32/0084C08L87/00C08K5/09C08K5/17
Inventor 解国新张国亮郭丹温诗铸
Owner TSINGHUA UNIV
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