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Graphene/silicon dioxide ionic liquid layered liquid crystal lubricant and preparation method thereof

A silicon dioxide and ionic liquid technology, applied in the field of lubrication, can solve problems such as restricted application and poor dispersion, and achieve the effect of simple method and good lubricating performance

Pending Publication Date: 2020-09-01
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, graphene and silica nanoparticles have poor dispersibility in lubricating oil, and problems such as easy agglomeration restrict their application in the field of lubrication.

Method used

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  • Graphene/silicon dioxide ionic liquid layered liquid crystal lubricant and preparation method thereof
  • Graphene/silicon dioxide ionic liquid layered liquid crystal lubricant and preparation method thereof
  • Graphene/silicon dioxide ionic liquid layered liquid crystal lubricant and preparation method thereof

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Embodiment

[0034] (1) prepare graphene dispersion liquid (H 2 o Graphene ): Weigh 0.2 g of Triton X-100 in a 100mL beaker to obtain an aqueous solution of 0.2 wt% Triton X-100, and then add graphene to the solution to prepare 0.1, 0.2, 0.3, 0.4, 0.5 mg / mL of the mixture, ultrasonicated in an ultrasonic cleaner for 24 hours, and finally a uniform black dispersion was obtained.

[0035] (2) prepare silicon dioxide dispersion liquid (H 2 o SiO2 ): Dissolve silica sols with particle sizes of 4.2 nm, 11.5 nm, and 25.6 nm in water and dilute them into a series of dispersions with mass concentrations of 0, 0.5, 1.0, 1.5, 2.0, and 2.5 wt%.

[0036] (3) Preparation of graphene / silica ionic liquid layered liquid crystal: fixed component Triton X-100:C 16 mimNTf 2 : H 2 o Graphene : H 2 o SiO2 = 54.6: 16.5: 14.3: 14.3. Add surfactant Triton X-100 and ionic liquid C 16 mimNTf 2 , first fix the mass fraction of silica to 1.0 wt%, add different concentrations of graphene dispersions to p...

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Abstract

The invention discloses a graphene / silicon dioxide ionic liquid layered liquid crystal lubricant and a preparation method thereof. The graphene / silicon dioxide ionic liquid layered liquid crystal lubricant is prepared from graphene, silicon dioxide, ionic liquid (C16mimNTf2), Triton X-100 and water according to a mass ratio of (1.75 to 10.5) to (5 to 25) to (90 to 200) to (400 to 600) to (250 to 450). The graphene / silicon dioxide ionic liquid layeredliquid crystal prepared by the invention looks like lubricating grease, has the characteristics of lubricating oil under the shearing action, hasthe self-constraint characteristic as the lubricating oil, and has good lubricating performance as a lubricating agent.

Description

technical field [0001] The present invention relates to a kind of graphene / silicon dioxide / ionic liquid / Triton X-100 / H 2 The invention discloses an O system layered liquid crystal lubricant and a preparation method thereof, belonging to the technical field of lubrication. Background technique [0002] The purpose of lubrication is to form a lubricating film with normal bearing capacity and low tangential shear strength between the friction surfaces, which can be used to reduce friction resistance and reduce material wear. A good lubricant can significantly reduce the friction and wear of mechanical equipment, effectively improve the reliability and service life of mechanical equipment, reduce energy consumption and save energy. [0003] It is generally believed that there are two structural reasons for lamellar liquid crystals to determine the lubricating behavior of lamellar liquid crystals: on the one hand, the long-range ordered arrangement of lamellar liquid crystal mol...

Claims

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Application Information

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IPC IPC(8): C10M173/02C10N50/10
CPCC10M173/02C10M2201/041C10M2201/105C10M2219/09
Inventor 范磊鹿西铭陈丽萍郭荣
Owner YANGZHOU UNIV
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